电力设备产品目录 - 电子画册在线预览、各类电子画册在线制作-云展网平台

Power Management

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FM2S

Single Phase Smart Meter

3. Measurement

Energy Pulse

Active energy pulse is output to relevant LED for accuracy verification. By default the meter constants

are configured as 1000imp/kWh, which are also configurable based on application.

Energy Values

Electric meter can measure and store the following energy quantities:

-Import active energy (+A),

-Export active energy (-A),

-Absolute active energy (|+A| + |-A|),

-Algebraic sum active energy (|+A| - |-A),

-Multi- tariff energy

After the energy value reaches the maximum display limit, which is 999999.9 [kWh], it will overflow and

reset to zero, meanwhile the overflow counter increments by one.

Demand

The method used for demand calculation of the meter could be either average demand or sliding demand.

By default it’s configured as average demand.

For sliding demand the interval “T” used for demand calculation is determined by the two parameters:

period and number_of_period, illustrated below:

For average demand, it can be regarded as a special type of “sliding demand” where the number of period is always 1.

Through the configuration of the above two parameters, the demand interval of the meter is defined.

The following table shows the value range of the parameters.

Maximum demand is captured based on corresponding demand register value.

The meter has the following demand/maximum demand registers:

Instantaneous Values

The meter measures the following instantaneous values:

- Instantaneous current: 1-digit decimal, unit: A.

-Instantaneous voltage: 1-digit decimal, unit: V.

-Import active power (A+): 2-digit decimal, unit: kW.

-Export active power (A-): 2-digit decimal, unit: kW.

Calculation method

Sliding

Interval

period(min)

1~60

Demand internal (min)

1~60

Number of period

1~60

Demand type

Import active demand (A+)

Export active demand (A-)

Measurement content

Current demand register (1.4.0)

Demand of last interval register (1.5.0)

Maximum demand registers - total and per tariff (1.6.x)

Current demand register (2.4.0)

Demand of last interval register (2.5.0)

Maximum demand registers - total and per tariff (2.6.x)

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FM2S

Single Phase Smart Meter

Optical Interface

Optical front view

-Compliant to ANSI C12.18 optical communication physical interface

-Conform to IEC62056-21 standards (mode C)

-Configured as 300bps, 7 bits, 1 even parity by default

-Communication speed up to 9600bps

-PC software and HHU can be used for local data exchange through optical interface.

Uplink Communication Interface

-Configured as 8 bits, no parity by default

-IEC62056-21 protocols

-Various communication options including RF/Lora/Bluetooth

5. Time of Use(Optional)

General Description

The meter offers up to 4 tariff operations, which feature is driven by its internal real time clock. The time table used for the tariff switching consists of the

season tables, the day tables and the special day tables.

Real Time Clock

1. RTC features

-Automatic leap year switching

-Accuracy at 23°C less than 0.5s/day

-24-hour clock format

-If the real-time clock stops, a predefined tariff can be designated for tariff energy registration

2. RTC Backup Power

One lithium battery with 1200mAh capacity, 3.6V supply voltage battery provides backup power to the RTC

TOU Time Table

The meter has 2 sets of TOU time tables, capable of up to 4 tariff operations. Each table consists of up to 12 season entries, associated to 12 week tables

respectively, and up to 8 day tables, each with up to 10 day entries. Besides, the meter can define up to 50 special days.

4. Communication

The meter offers 2 independent communication interfaces, which include an optical port, and a

modular communication unit used for uplink communication.

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Time Table Programming

The time table programming is always applied on the passive time table. The activation time of the passive time table is configurable. When the meter gets

to the activation time the active and passive time table will swap. The names of active and passive time table are both configurable but cannot be the same.

The time table switching can be done remotely through a communication command.

FM2S

Single Phase Smart Meter

6. Billing

There is a billing profile in the meter to store the billing values. The maximum demand registers reset and a record is generated in the billing profile either the

predefined billing time is due or a comunication billing operation is detected.

Billing on Predefined Schedule

By default the billing schedule is configured to trigger the billing operation at midnight on the first day of each month. The number of captured objects for

each billing entry can be up to 30.

The virgin startup of the meter generates a billing entry in the profile.

If a power outage or a time adjustment skips the billing time, the meter will complement the missed billing entry either after the meter is re-powered up or

after the time adjustment is completed.

Operations associated to billing

When a billing operation is conducted, the meter will do the following:

- Generate an entry in the billing profile

- Reset maximum demand resisters,

- Generate MD reset event log.

7. Load Profile(Optional)

Interval of each load profile is configurable, and independent from each other

What values can be stored in each load profile is configurable

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FM2S

Single Phase Smart Meter

8. Event(Optional)

The meter detects and records events. The event log is identified with unique event number. The generated event signal will be directed to generate alarm or

error indication based on relevant configuration.

Event logs, alarm and error generation:

Event Logs

The meter defines and records the following 10 type of event logs:

Type

Power outage

Over voltage

Under voltage

Over current

Over load

Meter programming

Clock setting

Battery low

Current reversal

System reset

Description

When the power grid is out of power, all phase voltage is lower than the working

voltage of the meter. When the power grid occurs, any phase voltage is higher than

the working voltage of the meter, and it lasts more than 4s; 20 items can be recorded.

The overvoltage starts as the default voltage greater than 1.2Un, and lasts more

than 60 seconds; The default voltage of overvoltage is less than 1.2Un, and lasts

more than 60 seconds; 20 items can be recorded.

The default voltage is less than 0.78Un and lasts more than 60 seconds. The

default voltage is greater than 0.78Un and lasts more than 60 seconds. 20 items can

be recorded.

The overcurrent starts with the default voltage greater than 1.2IMAX, and lasts

more than 60 seconds; The default voltage is less than 1.2imax and lasts more than

60 seconds. 20 items can be recorded.

Overload started as the default voltage greater than 1.2IMAX*Un, and lasted more

than 60 seconds; Overload end default voltage is less than 1. 2IMAX*Un, and

lasts more than 60 seconds; 20 items can be recorded.

Programming event for a meter; There are 10 records.

Save the time before and after the setup; 20 items can be recorded.

The battery is lower than the reasonable valve value; There are 10 records.

The current reverse starting condition is the reverse of the current and the apparent

power is greater than the starting power. The reverse end condition is the current is

not reversed and lasts more than 60 seconds; 20 items can be recorded.

Abnormal reset of the meter, such as the reposition of watchdog, etc.; There are 10 records.

OBIS

0-0:99.98.0.255

0-0:99.98.1.255

0-0:99.98.2.255

0-0:99.98.3.255

0-0:99.98.4.255

0-0:99.98.5.255

0-0:99.98.6.255

0-0:99.98.7.255

0-0:99.98.8.255

0-0:99.98.9.255

Event Code

Power on: 1

Power off: 2

Start: 79

Over: 204

Start: 76

Over: 201

Start: 95

Over: 220

Start: 99

Over: 224

The time before set:4 After:5

Start: 91

Over: 216

Event Alarming

The alarm indication includes the alarm LED, the alarm symbol on the LCD and the display on LCD.

- Alarm LED

When an alarm event occurs, the alarm LED will flash continuously.

- Alarm symbol of LCD(By defult)

9. Data Security

The meter offers different categories of users the following 2 access levels which are protected by access password:

- Public Reading

- Meter Reading and Configuration

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It is recommended to refer to the wiring diagram for connecting the meter to the power network. If appropriate a meter cabinet can be used to protect the

meter. Preferably the meter should be installed in a ventilated and environment.

1. Installation Procedures and Cautions

Installation Procedures

To ensure proper operation of the meter, follow the procedures below when install a meter:

- Pressure the meter, make sure the terminals are inserted into the socket.Make sure the meter is firmly in place, power on the meter

Cautions

Improper installation could damage the meter. Relevant verification must be done to ensure the meter is properly installed:

- Verify the operating voltage of the meter is within the range

- Verify the current range is proper for the application at the installation site

- Verify there is no visible mechanical or electrical damage on the meter

- Verify the factory seals of the meter have not been broken

2. Acceptance after Installation

After the meter is installed and power is connected, the following checking should be done on the meter:

- The phase voltage symbol on the LCD should be present

- If any load is applied on the meter the pulse LED should be flashing and the quadrant indicator should correctly indicated

3. Safety Regulations

Relevant national and international safety regulations must be complied with during the course of the meter installation. The installation must be conducted

by qualified personnel.

Do not touch any of the live parts of the meter at any time when the power is on. Be aware that personal injury or equipment damage could result from

improper wiring procedures.

FM2S

Single Phase Smart Meter

Transportation and storage

- The meter should be transported and unpacked violently. Do not apply power on when the case has been damaged or violently dropped during handling,

access and installation. Contact the supplier as soon as possible .

- Save the energy meter should be in the original packaging, the ambient temperature is -45 ~ +70 , the average relative humidity of not more than 75% of

the air without corrosive gases.

- Meter stored in the warehouse, should be placed on the bench, the stack height of not more than 10 boxes, unboxing, the single package meter stacking

height of not more than 10

Installation

Power Management

DDSU881

Series Guide Rail Table

Item

Accuracy Grade

Voltage Specifications

Current Specifications

Frequency

Operating Voltage Range

Operating Temperature Range

Power Consumption

Display Mode

Standard

Technical Specifications

Active power level 1, level 2

220V

0.25–0.5(60)A, 0.25–0.5(80)A,

other specifications can be customized

50Hz

Rated operating voltage range: 0.9Un～1.1Un,

extended operating voltage range: 0.8Un～1.15Un

Rated operating temperature range: -25℃～＋55℃,

extreme operating temperature range: -40℃～＋70℃

Approximately 1W

LCD display

GB/T 17215.321-2021, DL/T 645-2007

Application Scope

The DDSU881-4P DIN-rail mounted electronic single-phase energy meter (hereinafter referred to as the meter)

uses microelectronics technology to measure electrical energy. Its technical specifications comply with GB/T

17215.321-2021. It features a fully shielded and sealed structure, offering excellent resistance to electromagnetic

interference, low power consumption, high accuracy, anti-tampering measures, high overload resistance, and a

long lifespan.

Main Functions and Features

1. Accurately measures forward and reverse active energy, with reverse active energy accumulated as forward

energy.

2. The meter utilizes a stable metering chip and low-power industrial-grade components designed using

advanced SMT technology.

3. Long-term use requires no calibration. DIN-rail mounting allows for compact installation and high accuracy.

4. Display: 6+2 LCD.

5. Infrared and RS485 communication interfaces facilitate data exchange.

Main Technical Parameters

Appearance and Installation Dimensions

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Power Management

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DDSYU881

Series Guide Rail Table

Item

Accuracy Grade

Voltage Specifications

Current Specifications

Frequency

Operating Voltage Range

Operating Temperature Range

Power Consumption

Display Mode

Standard

Technical Specifications

Active power level 1, level 2

220V

0.25–0.5(60)A,0.25–0.5(80)A,

other specifications can be customized

50Hz

Rated operating voltage range: 0.9Un 1.1Un,

extended operating voltage range: 0.8Un~1.15Un

Rated operating temperature range: -25℃~+55℃,

extreme operating temperature range: -40℃~+70℃

About 1W

LCD display

GB/T17215.321-2021, DL/T645-2007, GB/T18460.3-2001

Application Scope The DDSYU881-4P DIN-rail electronic single-phase prepayment meter (infrared fee control meter) is a new infrared wireless remote control prepayment meter with multiple functions, including energy metering, load control, compact size, and easy installation. It is an ideal product for reforming the electricity consumption system, achieving electricity commercialization, resolving billing difficulties, and regulating grid load conditions. Main Functions and Features 1. Single-phase AC active energy metering, long-term operation without calibration. 2. One electricity purchase remote control per household (meter). Each remote control is encrypted and has a random password to prevent counterfeiting. 3. Expandable RS485 communication enables remote centralized meter reading and remote prepayment top-up. 4. The accompanying prepaid electricity vending management system provides comprehensive electricity vending management and usage monitoring functions. 5. If the load exceeds the set maximum current for a continuous period, the power supply circuit is disconnected and an alarm symbol flashes on the LCD. The meter automatically closes after a delay. 6. Remaining Power Display: The display has 8 digits (6 integers, 2 decimals). When the remaining power reaches the pre-alarm level, the LCD will flash to indicate the user needs to enter a new purchase amount. When the remaining power in the meter reaches zero, the meter automatically trips, interrupting power supply. At this point, the user must present their power purchase card to the electricity sales office to purchase power (the power supply office may allow for overdrafts, and inserting a power purchase card allows the user to use a certain amount of power). Only after inserting a valid power purchase card into the meter can power be restored. When the power shortage reaches a certain level, power is automatically cut off. Power is automatically restored after entering the new purchase amount (minus the overdraft amount). 7. Data is automatically saved during a power outage and restored upon power restoration. 8. A computer, dedicated infrared card reader, and billing management software form the electricity sales management system. 9. The meter can also measure correctly even if the wiring is reversed.

Main Technical Parameters

Appearance and Installation Dimensions 801 91 86

Power Management

DTSU881/DSSU881

Series Guide Rail Table

Item

Accuracy Grade

Voltage Specifications

Current Specifications

Frequency

Operating Voltage Range

Operating Temperature Range

Power Consumption

Display Mode

Standard

Technical Specifications

Active power level 1, level 2

3×220/380V, 3×100V, 3×380V, 3×57.7/100V

0.015–0.075(6)A,0.25–0.5(60)A,0.25–0.5(80)A,

other specifications can be customized

50Hz

Rated operating voltage range: 0.9Un～1.1Un,

extended operating voltage range: 0.8Un～1.15Un

Rated operating temperature range: -25℃～+55℃,

extreme operating temperature range: -40℃～+70℃

About 3W

LCD display

GB/T17215.321-2021, DL/T645-2007

Application Scope

This three-phase, four-wire (new DIN-rail type) AC active energy meter (hereinafter referred to as the energy

meter) offers high accuracy and usability. This meter utilizes internationally advanced ultra-low-power largescale integrated circuit technology and SMT manufacturing processes. It is an ideal choice for substations or

power plants, and is also suitable for transmission and distribution, or for network automation. It measures threephase AC active energy in a 50Hz reference frequency grid, and can also measure both forward and reverse

energy.

Main Functions and Features

1. Built-in high-speed, high-precision AC voltage and current acquisition modules, ensuring high sampling

accuracy and real-time, accurate energy measurement.

2. It measures both forward and reverse active energy, boasting a compact size, easy installation, and high

accuracy.

3. Powered by a three-phase power supply, the meter remains operational even if any two phases of the threephase, four-wire system are powered off.

4. It displays ABC three-phase current, voltage, and power factor.

5. The meter maintains data even in the event of a loss of AC power.

6. It has infrared and RS485 communication interfaces to realize remote centralized meter reading function.

Main Technical Parameters

Appearance and Installation Dimensions

158

119

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Power Management

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DTS881-VAP (D1206)

Single Phase Voltage/Current Protective Energy Meter

Application Scope The DDS238-VAP is a single-phase, two-wire AC active energy meter with over-voltage, under-voltage, and over-current protection. It cuts off the load instantly during faults to protect electrical equipment. Protection thresholds are user-adjustable based on local conditions. The meter offers long service life, high stability, wide voltage range, and low power consumption. Key Features -LCD with backlight: Displays total energy (kWh), real-time current (A), voltage (V), and active power (W). -Protection modes include over-voltage, under-voltage, and over-current with selectable auto or

manual reclosing. -Malignant load protection (pure resistive load limit) designed for dormitories and apartments. -Adjustable protection thresholds to safeguard equipment from voltage instability or faults. -Automatic recovery once line voltage normalizes, preventing false trips caused by transient surges. -LED indicators for all protection modes. -Lightning protection and high overload capacity. -Selectable circuit output cycle switch. -DIN 35 mm rail mounting for easy installation. -Each protection function can be individually enabled or disabled.

Wire connection Outline dimension

Technical Data

D1206

Input working voltage

Overvoltage protection value

Under voltage protection value

Over current protection value

Rated frequency

Delay in switch on after power off

Voltage circuit power consumption

Current circuit power consumption

Active energy display range

Voltage/currentactive power accurate

Active energy accurate

Operating temperature

Storage temperature

Relative humidity

Altitude

Electromagnetic Environment

Mechanical life

85~300V AC

85-300V ( default 270V)

85-300V ( default 170V)

1-63A( default 40A) 1-80A( default 60A special order)

50/60Hz

2-512s ( default 2s)

≤1W

<1VA

0~9999.9kWh

+0.5%

+1% (IEC62053-21)

-25℃ ~+70℃

-40℃ ~+80℃

≤85%

≤2500m

≥100000 cycles

Power Management

Technical Data

DDS881-1(D1102)

Single Phase Din Rail Type Energy Meter

Rate-Rated

Rated Current / Frequency

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

110V, 120V,220V,230,240V (0.8~1.2Un)

5(32)A, 5(40)A, 5(45)A/50Hz or 60Hz ±10%

Application Scope

The meter is designed to measure single phase two wire AC active energy like residential,utility and industrial

application. It is a long life meter with the advantage of high stability, high over load capability, low power loss

and small volume.

Basic Function

-Mechanical step register 5+1 or LCD display 5+2 or 6+1

-Bi-directional total active energy measurement, reverse active energy measure in the total active energy

-For LCD display type meter, Energy data can store in memory chip more than 15 years after power off

-Pulse LED indicates working of meter, Passive pulse output with optical coupling isolation 35mm din

rail installation

-LCD display with backlight (optional function)

Wire connection

Outline dimension

D1102-1

D1102-2

D1102-3

D1102-4

Direct type

＜1W/10VA

4000V/25mA for 60s

IP20

-25℃ ~ 70℃

Accuracy class

Start current

Over current withstand

Executive standard

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

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Power Management

DDS881-2 (D1201)

Single Phase Din Rail Type Energy Meter

Application Scope

The meter is designed to measure single phase two wire AC active energy like residential, utility and industrial

application. It is a long life meter with the advantage of high stability, high over load capability, low power loss

and small volume.

Basic Function

-LCD display 5+1

-Bi-directional total active energy measurement, reverse active energy measure in the total active energy

-The pulse LED indicates the meter's operation. Passive pulse output is provided with opto-coupler isolation.

-Energy data can store in memory chip more than 15 years after power off

-LCD with backlight and keypad ,resettable interval energy can be reset to zero by keypad in anytime

(optional function)

-35mm din rail installation

Wire connection

Outline dimension

Technical Data

Rate-Rated voltage AC

Rated Current / Frequency

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

110V,120V,220V,230,240V (0.8~1.2Un)

5(65)A, 10(100)A /50Hz or 60Hz±10%

Direct type

＜1W/10VA

4000V/25mA for 60s

IP20

-25℃ ~ 70℃

Accuracy class

Start current

Over current withstand

Executive standard

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

D1201-1

D1201-2

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Power Management

Technical Data

DDS881-1-W1 (D1107)

Single Phase Din Rail Type Wifi Remote Control Smart Switch(IVAP)

Rated Voltage (AC)

Rated Current / Frequency

Wi-fi

Connection Mode

Power Consumption

Withstand Voltage(AC)

IP Rating

Operating Temperature

Application Scope

The switch is designed to measure single phase two wire AC active energy and variable parameter like

residential, utility and industrial application. It can remote read from WIFI communication (Smart life or Tuya

smart APP). It is a long life meter with the advantage of high stability, high over load capability, low power loss

and small volume.

Basic Function

-Bi-directional active energy measure, import/export active energy display separately on APP

-The switch APP also display real voltage, current, active power, reactive power , power factor,

frequency

-Timing and delay control by APP

-Hour/Day/Month/Year history of total/import/export active energy consumption tracking by APP,

and also can output excel 30 days active energy records by email.P

-Remote control on/off by APP, it also has manual Control on/off by button under lose WIFI

-Prepayment function ,if balance used up, it will cut off automatic. This function can be on/off

by hand.

-It have over-voltage and over load protection, it can set value from APP .Each protection

function can be opened/closed as customer requirement

-It have active power 15minutes interval curve only one day

-Voice control on/off function

-Alarm event records and on/off operation records on APP

-App has password protected setting/Carbon emissions setting/ electric cost fee setting/ reset energy to

zero setting

-35mm din rail installation

Wire connection

Outline dimension

85 ~ 300V (L-N)

63A/50Hz or 60Hz±10%

802.11b/g/n

Direct type

< 2W/10VA

4000V/25mA for60s

IP20

-25°C ~ 70°C

1% or 0.5%

20mA

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse,80±5ms

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Accuracy class

Start current

Over current withstand

Executive standard

Led pulse output

D1107

Power Management

DDS881-1-W2 (D1108)

Single Phase Din Rail Type Wifi Remote Control Smart Switch

Application Scope

The switch is designed to remote control on/off in single phase two wire AC power grid . It can remote control

from WIFI communication(Smart life or Tuya smart APP) . It is a long life product with the advantage of high

stability, high over load capability, low power loss and small volume.

Basic Function

-Voice control: once you have this switch, you can connect it with Amazon Alexa(Amazon echo/dot/tap) or

Google Assistant for voice control

-Wi-Fi Remote Control: You can use \"Smart Life\" APP in your smart phone to control the switch wirelessly with Wi-Fi

or 4G network.no hub required

-Timing Function: Take full control of your home or office lights thanks to schedule timer that will allow you to plan

the exact time to turn lights and appliances on/off automatically

-Share Device:This smart switch can have several control sites shared by different family members.one mobile

phone can also control many switches

-Manual Control by button under lose WIFI

-35mm din rail installation

Technical Data

Rate-Rated voltage AC

Rated Current / Frequency

Wi-Fi

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

D1108

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85 ~ 300V (L-N)

63A/50Hz or 60Hz±10%

802.11b/g/n

Direct type

< 2W/10VA

4000V/25mA for 60s

IP 20

Magnetic latching

70A

30 Imax for 0.01s

-25°C ~ 70°C

Relay type

Max load

Over current withstand

Work temperature

Wire connection

Outline dimension

DDS881-4 W(D1408)

Single Phase Three Wire Din Rail Type RS485 Energy Meter

Application Scope

The meter is designed to measure single phase two wire AC active energy and variable parameter like residential,

utility and industrial application. It is equipped with an RS485 communication port for remote reading. It is a long

life meter with the advantage of high stability, high over load capability, low power loss and small volume.

Basic Function

-LCD display, keypad for LCD display step by step

-Bi-directional total active energy, reverse active energy measure in the total active energy

-The meter also display real voltage, current, active power, reactive power , power factor, frequency, total

active energy, import active energy, export active energy, reactive energy

-RS485 communication port, MODBUS-RTU protocol

-Remote control on/off with RS485 communication port and have led indication

-The active energy pulse LED indicates meter operation.

-The pulse output is electrically isolated via optical coupling.

-Energy data can store in memory chip more than 15 years after power off

-35mm din rail installation, bottom type wire connection

Wire connection

Outline dimension

Technical Data

Rate-Rated voltage AC

Rated Current/Frequency

Communication port

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

110V,120V,220V,230,240V (0.8~1.2Un)

5(60)A, 20(80)A / 50Hz or 60Hz±10%

RS485 port, baud rate 1200~9600 bps, default is 9600bps, address 1~247, None parity,

stop bits 1, data bits 8.

Direct type

＜1W/10VA

4000V/25mA for 60s

IP20

-25℃ ~70℃

Accuracy class

Start current

Over current withstand

Executive standard

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

D1408

Power Management

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Power Management

DDS881-4 WIFI(D1415)

Single Phase Din Rail Type WIFI Remote Control Energy Meter(IVAP)

Application Scope

The meter is designed to measure single phase two wire AC active energy and variable parameter like residential,

utility and industrial application. It is equipped with an RS485 communication port for remote reading.(Smart life

or Tuya smart APP). It is a long life meter with the advantage of high stability, high over load capability, low power

loss and small volume.

Basic Function

-LCD screen with step-by-step display using keypad

-Supports two-way energy measurement; imported and exported energy is shown separately on both the

meter and the app

-Displays real-time voltage, current, active power, reactive power, power factor, frequency,

temperature, imported/exported energy, and reactive energy

-Timer and delay functions can be set via the app

-Tracks energy usage history by hour, day, month, and year via the app; also supports exporting 30-day

energy data to Excel by email

-View real-time voltage, current, power, and frequency through the app

-Remote on/off control via the app; manual on/off control is available via a button when Wi-Fi is unavailable

-Prepayment function: the meter will automatically shut off when the balance is used up; this feature can

be manually enabled or disabled

-Built-in over-voltage, overload, and over-temperature protection; limits can be set in the app, and

each function can be turned on or off as needed

-Shows active power curve in 15-minute intervals (for one day only)

-Supports voice control for switching on/off

-Event logs for alarms and on/off actions are viewable in the app

-App features include password protection, carbon emission tracking, electricity cost settings, and energy

reset to zero

-Leakage protection (requires external CT, sold separately upon request)

-35mm DIN rail mounting with bottom-entry wiring

Wire connection

Outline dimension

Technical Data

Rate-Rated voltage AC

Rated Current/ Frequency

WIFI

Communication port

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

90 ~ 300V (L-N)

5(60)A / 50Hz or 60Hz±10%

802.11b/g/n

RS485 port, baud rate 1200 ~ 9600 bps, default is 9600bps, address 1 ~ 247, None parity,

stiop bits 1, data bits 8.

Direct type

＜2W/10VA

4000V/25mA for 60s

IP20

-25℃ ~ 70℃

Accuracy class

Start current

Over current withstand

Executive standard

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

D1415

112 / huyuelectric.com

DDS881-4 WIFI(D1413)

Single Phase Three Wire Din Rail Type WIFI Remote Control Energy Meter

Application Scope

The meter is designed to measure single-phase three-wire AC active energy and various electrical parameters,

making it suitable for residential, utility, and industrial applications. It supports remote reading via Wi-Fi using the

Smart Life or Tuya Smart app. This compact meter offers long service life, high stability, strong overload capacity,

and low power consumption.

Basic Function

-LCD display with button control for step-by-step navigation

-Bi-directional total active energy measurement; reverse energy is included in the total active energy

-The meter displays real-time values such as phase voltage, active power, frequency, and L1/L2 current on

both the LCD and the mobile app

-The app shows total active energy, remaining balance, and supports remote ON/OFF control via a high-capacity

magnetic relay for L1/L2 circuits

-Timing and delay control available through the app

-The app shows total active energy, remaining balance, and supports remote ON/OFF control via a high-capacity

magnetic relay for L1/L2 circuits

-Timing and delay control available through the app

-Hourly, daily, monthly, and yearly tracking of total import/export active energy via the app, with an option

to export the past 30 days of records as an Excel file via email

-Remote ON/OFF control via app; manual ON/OFF control is also available via button if Wi-Fi is unavailable

-Prepayment function: power is automatically cut off when balance is depleted. This function can also

be manually enabled or disabled

-15-minute interval active power curve available for one day

-Voice control for ON/OFF switching

-Event log for alarms and ON/OFF operations viewable in the app

-App supports password protection, carbon emissions tracking, electricity cost settings, and energy reset to zero

-35mm DIN rail mounting design

Wire connection

Outline dimension

Technical Data

Rate-Rated voltage AC

Rated Current / Frequency

WIFI

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

110/220V (L1-L2 90 ~ 300V ) FM2S The meter is designed for L1 and L2 line connection only;

the neutral (N) line does not pass through the meter.

10(100)A / 50Hz or 60Hz±10%

802.11b/g/n

Direct type

＜2W/10VA

4000V/25mA for 60s

IP20

-25℃ ~70℃

Accuracy class

Start current

Over current withstand

Executive standard

1% or 0.5%

40mA

30Imax for 0.01s

IEC62053-21 DIN 43880

D1413

Power Management

113 / huyuelectric.com

Power Management

DDS881-4(D1401)

Single Phase Din Rail Type Energy Meter

Application Scope

The meter is designed to measure single-phase, two-wire AC active energy for residential, utility, and industrial

applications. It offers long service life with advantages such as high stability, strong overload capacity, low

power consumption, and compact size.

Basic Function

-Available with mechanical step register (5+1) or LCD display (6+1)

-Bi-directional total active energy measurement; reverse energy is included in total active energy

-For LCD type, energy data is stored in memory and retained for over 15 years after power loss

-Pulse LED indicates meter operation

-Suitable for 35mm DIN rail mounting

Wire connection

Outline dimension

Technical Data

Rate-Rated voltage AC

Rated Current / Frequency

Wiring Method

Power Consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

110V,120V,220V,230,240V (0.8 ~ 1.2Un)

5(60)A, 10(100)A / 50Hz or 60Hz±10%

Direct type

＜1W/10VA

4000V/25mA for 60s

IP20

-25℃ ~ 70℃

Accuracy class

Start current

Over current withstand

Executive standard

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

D1401-1

D1401-2

D1401-3

D1401-4

114 / huyuelectric.com

Power Management

DTS881-4 (D3401)

Three Phase Din Rail Type Energy Meter

Application Scope

The meter is used in three phase four wire /three phase three wire /two phase three wire power grid. The meter is

designed to measure AC active energy. All of its functions comply with the relative technical requirement for

class 1 three phase watt hour meter in IEC62053-21. The meter features long service life, high stability, strong

overload capacity, low power consumption, and a compact design.

Basic Function

-LCD display: 6+1 digits (default) or 5+2 digits

-Bi-directional total active energy measurement; reverse energy included in total energy

-Pulse LED indicates meter operation; pulse output is optically isolated

-LED indicators for phase loss and reverse connection

-DIN rail mounting (35 mm) for easy installation

Wire connection

Outline dimension

Technical Data

Rated Voltage AC

Rated Current / Frequency

Connection mode

Power consumption

Withstand Voltage(AC)

IP Rating

Working Temperature

DTS881-4 three phase four wire 3x120/208V, 3x220/380V, 3x230/400V (0.8~1.2Un)

DTS881-4 three phase three wire(two phase three wire) 2x120/208V, 3x220V, 3x380V,

3x400V (0.8~1.2Un)

5A/CT ,1.5(6)A ,5(60)A, 10(100)A / 50Hz or 60Hz±10%

CT or Direct type

＜1W/10VA

4000V/25mA for 60s

Ip20

-25℃ ~ 70℃

Accuracy class

Start current

Over current withstand

Standards Compliance

Pulse output

1% or 0.5%

0.004Ib

30Imax for 0.01s

IEC62053-21 DIN 43880

Passive pulse, 80±5 ms

D3401-1

D3401-2 5A/CT

115 / huyuelectric.com

Power Management

DTS881-7 (D3701)

Three Phase Din Rail Type Energy Meter

Application Scope

The meter is used in three phase four wire/three phase three wire /two phase three wire power grid.The meter is

designed to measure AC active energy. It offers long service life with the advantage of high stability, high over

load capability, low power loss and small volume.

Basic Function

-Available with mechanical step register or LCD display

-Bi-directional total active energy measurement; reverse energy is included in total energy

-Pulse LED indicates meter operation; optically isolated pulse output for enhanced reliability

-LED indicators for phase loss and reverse wiring

-For LCD type: energy data stored in memory and retained for over 15 years after power loss

-Compatible with 35 mm DIN rail mounting for quick and easy installation

Technical Data

Rated Voltage Ac

Operating Voltage Range

Rated Current

Frequency

Connection Mode

Display

Accuracy Class

Power Consumption

Start Current

Withstand Voltage(ac)

Impulse Voltage

Ip Rating

Impulse Rate

Pulse Output

Standard Compliance

Working Temperature

Outline Dimension L*M*H

DTS881-7 three phase four wire 3x120/208V, 3x220/380V,3x230/400V, 3x240/415V

DTS881-7 three phase three wire(two phase three wire)

2x120/208V, 2x127/220, 3x220V, 3x380V, 3x400V

0.8~1.2Un

5A/CT, 1.5(6)A, 5(60)A, 10(100)A, or other as required

50Hz or 60Hz

CT type or Direct type

LCD

1.0

<0.5W/5VA/each phase

0.004Ib

4000V/25mA for 60 sec

6kV 1.2 s waveform

IP20

400~6400 imp/kWh

Passive pulse, pulse width is 80土5 ms

DIN 43880, IEC62053-21, IEC62052-11

-30℃~70℃

126x93x65mm

D3701-1

D3701-2 5A/CT

Environment

Operating temperature

Storage temperature

Reference temperature

Relative humidity

Altitude

Warm up time

Mechanical Environment

Electromagnetic Environment

Degree of pollution

-25℃ ~55℃

-40℃ ~80℃

23℃ ±2℃

0 to 95%, non-condensing

Up to 2500m

10s

116 / huyuelectric.com

Power Management

Wire connection

Outline dimension

DTS881-7 (D3701)

Three Phase Din Rail Type Energy Meter

117 / huyuelectric.com

Power Management

6L2, 42L6, 85L1, 59L1, 44L1, 99T1

Series current, voltage, frequency, power factor, power

Application Scope

Current, voltage, frequency, power factor, power, series panel meters and other products are suitable for

measuring current, voltage, frequency, phase and power factor in AC and DC circuits.

Main Technical Parameters

Accuracy

Grade 1.5

Grade 2.5

Operating Conditions

-20°C to +40°C

Relative Humidity

25% to 85%

Name

AC ammeter

AC voltmeter

DC ammeter

DC voltmeter

Common Specifications

(Measurement Range)

0A-50A

10A-10kA/5A, 10A-40kA/1A

1V-600V

380V-380kV/100V

50μA-20A

20A-10kA/75mV

1-750V

450V-450kV/1mA,/20mA

1. Basic technical parameters

Mechanical Properties

Withstands acceleration of

30 m/s

Impact frequency of

80-120 times per minute

Two-hour transportation

vibration

Dielectric Strength

AC voltage 50Hz

2kV 1min

Voltage Effect

When the rated

value varies by

±15%, the error in

the indicated

value does not

exceed the basic error.

Working position

Vertical

2. Current and voltage meter measurement range

Notes

Direct connection

Connection via current transformer

Direct connection

Secondary voltage 100V via voltage transformer

Direct connection

External shunt 75mV

Direct connection

Connection via resistor

Name

Frequency meter

Power factor meter

Power meter measurement range

COSΦ

3. Frequency, power factor (phase) measurement range

Quantity limit

45～55Hz 45～65Hz 55～65Hz 100V 220V 380V

COSΦ=0.5C-1～0.5L 100V 220V 380V 5A

5A-10kV/5A 100V 220V 380V 380V-380kV/100V 5A

Model and Meaning

A represents current, V represents voltage, and Hz represents frequency.

cos represents power factor, kW represents power, and kVar represents reactive power.

Design number

T represents AC electromagnetic system, L represents AC rectifier system,

C represents DC system, and D represents AC motor system.

Instrument type

□ □ □ - □

118 / huyuelectric.com

Power Management

6L2, 42L6, 85L1, 59L1, 44L1, 99T1

Series current, voltage, frequency, power factor, power

5. Measurement range of three-phase reactive power meter

Rated current

(via current transformer

with secondary current of 5A)A

7.5

100

150

200

300

400

600

750

800

1.5K

7.5K

10K

Measuring

range

kVar

mVar

DC access

100

0.6

1.2

2.5

100

120

200

250

400

500

600

800

1.2

220

1.5

2.5

100

120

200

250

300

500

600

1.2

1.5

2.5

Accessed via voltage transformer (secondary voltage is 100V)

Rated voltage (V)

380

2.5

100

150

200

300

400

500

800

1.5

2.5

120

150

200

300

400

600

800

1.2

1.5

2.5

120

150

250

300

400

600

800

1.2

1.5

2.5

10K

100

120

200

250

400

500

600

1.2

2.5

100

120

15K

100

150

200

300

400

600

800

1.5

100

120

150

200

35K

250

400

500

800

1.5

2.5

100

150

200

250

300

400

500

110K

800

1.2

1.5

2.5

100

120

150

250

300

500

600

800

1000

1200

1500

220K

1.5

2.5

100

120

200

250

300

500

600

1000

1200

1500

2000

2500

3000

380K

2.5

100

150

200

300

400

500

800

1000

1500

2000

2500

3000

4000

5000

21.5

7.5

100

7.5

14.5

1.5

17.5

1.5

4. Measurement range of three-phase power meter

Rated current

(via current transformer

with secondary current of 5A)A

7.5

100

150

200

300

400

600

750

800

1.5K

7.5K

10K

Measuring

range

DC access

100

0.8

1.2

1.5

2.5

100

120

150

250

300

500

600

800

1.2

1.5

200

120

150

250

300

400

600

800

1.2

1.5

2.5

Accessed via voltage transformer (secondary voltage is 100V)

Rated voltage (V)

380

100

120

200

250

400

500

600

1.2

2.5

100

150

200

250

400

500

800

1.5

100

150

200

300

400

500

800

1.5

100

10K

120

150

250

300

500

600

800

1.2

1.5

2.5

100

120

150

15K

120

200

250

400

500

800

1.2

2.5

100

120

150

200

250

35K

300

500

600

1.2

2.5

100

120

200

250

300

400

500

600

110K

1.5

120

150

200

300

400

600

800

1000

1200

1500

2000

220K

120

150

250

300

400

600

800

1200

1500

2000

2500

3000

3500

380K

100

120

200

250

400

500

600

1000

1200

2000

2500

3000

4000

5000

6000

119 / huyuelectric.com

Power Management

Appearance and Installation Dimensions

1. 42L6, 42C3 type plate meter

120 13 112

2. 6L2, 6C2 type plate meter

80 10

85.5

H (see table)

Models

6L(C)2-A, 6L(C)2-V, 6L2-HZ

6L2-COSφ

6L2-KW, 6L2-KVAR

H Table

102

3. 44L1, 44C2 type plate 4. 59L1, 59C2 type plate meter

100

49 14 Φ58.5

2×M4

21.5

7.5

120 49 14

100

Φ78.5

90±0.25

70 4×M4

7.5

6L2, 42L6, 85L1, 59L1, 44L1, 99T1

Series current, voltage, frequency, power factor, power

5. 85L1, 85C1, 85L17, 85C17 plate

64 51 11 Φ49

2×M3

14.5

1.5

6. 69L9, 69C9, 69L17, 69C17 plate

80 50 11 Φ59

64±0.5

2×M3

17.5

1.5

7. 72L1, 72C1, 72T1 plate meter 8. 99L1, 99C1, 99T1 plate meter

□72 48.5

59.5

66.5

66 □48 40.5

45max

120 / huyuelectric.com

Accuracy

grade

Application Scope

Main Technical Parameters

BH-0.66

Series Current Transformer

The BH-0.66 series current transformers are designed for indoor use and are suitable for current and energy

measurement and relay protection in AC circuits with a rated voltage of 660V and a rated frequency of 50Hz.

This product complies with GB 20840.1 and GB 20840.2.

Model

BH-0.66 20Φ

BH-0.66 30 Type I

BH-0.66 30 Type IB

BH-0.66 40 Type I

BH-0.66 50 Type

Rated Current

Ratio (A)

75/5

100/5

150/5

200/5

250/5

300/5

400/5

500/5

50/5

75/5

100/5

150/5

200/5

250/5

300/5

400/5

150/5

200/5

250/5

300/5

400/5

500/5

600/5

750/5

800/5

1000/5

1200/5

1500/5

200/5

300/5

400/5

500/5

600/5

800/5

1000/5

1200/5

1500/5

0.66

Rated voltage

(kV)

0.5

1.5S

0.2

0.2S

Power Management

1. Insulation Requirements: Primary winding to secondary winding and ground, and secondary winding to ground,

withstand power frequency voltage of 3kW for 1 minute. Insulation resistance ≥ 10MΩ.

2. Rated secondary current 5A. Rated primary current, rated capacity, and accuracy are shown in the table below.

Rated load

(VA)

2.5

0.2

0.2S

0.5

0.5S

Model and Meaning

Category

Window Width

Rated Voltage (kV)

Current Transformer

Enclosed

B H - 0.66 □ Ⅱ

For GCS Low-Voltage

Withdrawable Switchgear

124 / huyuelectric.com

Power Management

BH(SDH)-0.66 II

Series Current Transformer

Accuracy

grade

Model

BH-0.66 100 Type II

(SDH-0.66 100Ⅱ)

BH-0.66 120 Type II

(SDH-0.66 120Ⅱ)

BH-0.66 130 Type II

(SDH-0.66 130Ⅱ)

BH-0.66 150 Type II

(SDH-0.66 150Ⅱ)

Rated Current

Ratio (A)

1000/5

1200/5

1500/5

2000/5

2500/5

3000/5

4000/5

1500/5

2000/5

2500/5

3000/5

4000/5

5000/5

1000/5

1200/5

1500/5

2000/5

2500/5

3000/5

4000/5

5000/5

1500/5

2000/5

2500/5

3000/5

4000/5

5000/5

0.66

Rated voltage

(kV)

Rated load

(VA)

0.2

0.2S

0.5

0.5S

Appearance and Installation Dimensions

102

122

132

153

Models

BH-0.66 30 II

BH-0.66 40 II

BH-0.66 50 II

BH-0.66 60 II

BH-0.66 80 II

BH-0.66 100 II

BH-0.66 120 II

BH-0.66 130 II

BH-0.66 150 II

104

106

110

118

120

154

160

31.5

32.5

61.5

78.5

102

122

140

169

179

200

52.5

48.5

47±0.32

45±0.47

54±0.32

59±0.47

125 / huyuelectric.com

Power Management

BH-0.66III

Series Current Transformer

Application Scope The BH-0.66III series current transformers are designed for indoor use and are suitable for current and energy measurement and relay protection in AC circuits with a rated voltage of 660V or less and a rated frequency of 50Hz or 60Hz. This product complies with: GB20840.1 GB20840.2 Normal Operating Conditions 1. Installation Location: Indoors 2. Ambient Temperature: Minimum -5°C, Maximum +40°C 3. Ambient Humidity: Relative Humidity not exceeding 80% 4. Altitude: Not exceeding 1000m 5. Atmospheric Conditions: No contaminants, corrosive media, or explosive media that could seriously affect the

transformer's insulation

Structural Characteristics The transformer's core is annular or rectangular, with the secondary winding evenly distributed around the core's circumference. The transformer's insulation is made of flame-retardant plastic. A window is provided in the center of the transformer for the primary busbar to pass through. The product's output terminals are marked with P1 for the primary input and P2 for the output, and S1 and S2 for the secondary output terminals. When the primary current flows in through P1 and out through P2, the secondary current flows out through S1 and then flows through the external circuit into S2, resulting in reduced polarity. The core is formed from wound silicon steel sheets, eliminating air gaps and ensuring high magnetic properties. The secondary winding is evenly wound, minimizing magnetic flux leakage, resulting in stable performance, lightweight, and easy installation.

Rated primary current (A)

150-5000

Main Technical Parameters

Rated voltage (V)

660

Rated frequency (Hz)

Rated secondary current (A) 5

1. Basic technical parameters

2. Insulation Level: Secondary winding insulation resistance to ground ≥ 10MΩ, short-term power frequency withstand

voltage 3kV for 1 minute

3. Rated Load and Accuracy: cosΦ = 0.8 hysteresis

Accuracy

0.5

0.5S

0.2

Rated primary current (A)

150-250

300-400

500-800

1200-1500

2000-5000

Rated load (VA) 5

Appearance and Installation Dimensions 1、BH-0.66 20III 22 P 111 S1 S2 47±0.32 86 41±0.32 64

Φ20

45±0.47

2、BH-0.66 30III

S1 S2

2131

54±0.32

49±0.32

59±0.47

Model and Meaning

B H - 0.66 □ Ⅲ

Classification

Window Width

Rated Voltage (kV)

Current Transformer

Enclosed

126 / huyuelectric.com

Power Management

BH-0.66III

Series Current Transformer

3、BH-0.66 40III 4、BH-0.66 50III

59±0.47

S1 S2

65±0.43

61±0.43

107

S1 S2

59±0.2

59±0.47

5、BH-0.66 60III 6、BH-0.66 80III

59±0.47

83±0.26

112

S1 S2

90±0.26

123

59±0.47

109±0.5

132

S1 S2

105±0.57

152

7、BH-0.66 100III 6、BH-0.66 120III

59±0.47

102

108±0.5

152

S1 S2

128±0.64

150

147±0.72

62±0.47

122

109±0.57

174

S1 S2

151

108

117

127 / huyuelectric.com

Power Management

LMZ(J)1-0.5

Series Current Transformer

Application Scope

The LMZ(J)1-0.5 series current transformers are primarily designed for indoor use and are suitable for current

and energy measurement or relay protection in AC circuits with a rated voltage of 0.5 kV or less and a rated

frequency of 50 Hz. These are cast-type current transformers and are installed using a baseplate mounting

method.

They comply with GB/T20840.1 and GB/T20840.2.

Normal Operating Conditions

1. Installation Location: Indoors

2. Ambient Temperature: Minimum -5°C, Maximum +40°C

3. Humidity: Average relative humidity within 24 hours not exceeding 95%, and average relative humidity within

one month not exceeding 90%

4. Altitude: Not exceeding 1000m

5. Ambient air free of significant dust, smoke, corrosive gases, steam, or salt contamination

6. The installation site must be free of severe vibration or turbulence

Primary winding

nominal voltage (kV)

0.5

Main Technical Parameters

Rated primary

current (A)

Rated secondary

current (A)

Accuracy

0.2、0.2S、

0.5、0.5S

1. Basic technical parameters

Primary Current (A)

150, 200, 250, 300

400, 500, 600

750, 800

1000, 1200, 1500

2000, 2500, 3000

Appearance and Installation Dimensions

1. LMZ (J) 1-0.5 (rated primary current 150, 200, 250, 300)

59±0.47

65±0.43

107

59±0.47

83±0.26

123

59±0.47

109±0.5

152

59±0.47

108±0.5

150

62±0.47

109±0.57

151

Rated

frequency

150, 200, 250, 300, 400, 500, 600, 750 50Hz

800, 1000, 1200, 1500, 2000, 2500, 3000

67.5

71.5

76.5

117

125

120

139

165

119

152

110

128

153

185

103

154

140

177

230

S1 S2

85 48

110

108

Φ29

2. LMZ (J) 1-0.5S/0.2 pole (rated primary current 150, 200, 250, 300)

S1 S2

110

117

Φ29

Model and Meaning

Rated voltage (kV)

Design number

Enlarged capacity

Cast insulation type

Busbar type

Current transformer

L M Z (J) 1 - 0.5

128 / huyuelectric.com

Power Management

LMZ(J)1-0.5

Series Current Transformer

3. LMZ (J) 1-0.5 (rated primary current 400, 500, 600)

4. LMZ (J) 1-0.5 (rated primary current 750, 800)

5. LMZ (J) 1-0.5 (rated primary current 1000, 1200, 1500)

6. LMZ (J) 1-0.5 (rated primary current 2000, 2500, 3000)

S1 S2

110

124

Φ45

136

S1 S2

100

130

S1 S2

160

102

120

147

S1 S2

190

130

150

165

111

121

119

125

129 / huyuelectric.com

Power Management

LMZ(J)1-0.66

Series Current Transformer

Application Scope

The LMZ(J)1-0.66 series current transformers are primarily designed for indoor use and are suitable for current

and energy measurement or relay protection in AC circuits with a rated voltage of 0.66 kV or less and a rated

frequency of 50 Hz. These are cast-type current transformers and are installed using the busbar mounting

method.

They comply with GB/T20840.1 and GB/T20840.2.

Normal Operating Conditions

1. Ambient Temperature: Minimum -5°C, Maximum +40°C.

2. Humidity: The average relative humidity measured over a 24-hour period shall not exceed 95%, and the

average relative humidity over a month shall not exceed 90%.

3. Altitude: Not exceeding 1000 meters.

4. The ambient air must be free of significant dust, smoke, corrosive gases, vapors, or salt contamination.

5. The installation site must be free of severe vibration or turbulence.

Primary winding

nominal voltage (kV)

0.66

Main Technical Parameters

Rated primary

current (A)

Rated secondary

current (A)

Accuracy

0.5/0.2/

0.2S/0.5S

Appearance and Installation Dimensions

1. LMZ (J) 1-0.66 (rated primary current 100, 150,

200, 250, 300)

Rated

frequency

100, 150, 200, 250, 300, 400, 500, 600, 750, 800, 1000 50Hz

1200, 1500, 2000, 2500, 3000, 4000, 5000, 6000

124

130

147

165

S1 S2

111

56 45

2. LMZ (J) 1-0.66 (rated primary current 400, 500, 600,

750, 800, 1000)

56 45

S1 S2

101

121

3. LMZ (J) 1-0.66 (rated primary current 750, 800, 1000,

1200, 1500, 2000)

4. LMZ (J) 1-0.66 (rated primary current 2000, 2500, 3000,

4000, 5000, 6000)

56 45

S1 S2

150 85

119

104

S1 S2

191

125

142

56 45

Model and Meaning

Rated voltage (kV)

Design number

Increased capacity

Cast insulation

Busbar type

Current transformer

L M Z (J) 1 - 0.66

130 / huyuelectric.com

Power Management

LFZ1D-GHY3, LMZ(1D-4D)-GHY3

Series Current Transformer

Application Scope

This type of current transformer is cast in resin and is used indoors for current and energy metering, power

measurement, and relay protection in AC 50Hz circuits with a rated voltage of 400V or less.

This product complies with: GB/T20840.1, GB/T20840.2, and Q/GDW1572.

Normal Operating Conditions

1. Installation Location: Indoors

2. Ambient Air Temperature: -5°C to +40°C, with an average temperature not exceeding +35°C.

3. Ambient Humidity: Relative Humidity ≤ 85%.

4. Altitude: Not exceeding 1000 meters.

5. Atmospheric Conditions: Free from contaminants or corrosive agents that could seriously affect the

transformer's insulation.

Main Technical Parameters

Multiplication

0.55 factor

0.2S

1. Accuracy: 0.2S, 0.5S.

2. Rated voltage: 400V

3. Rated frequency: 50Hz

4. Rated primary current, rated secondary current, rated load, and accuracy are shown in Table 2.

5. Insulation performance: The primary winding must withstand a short-term power frequency withstand voltage

of 3kV from the primary winding to the secondary winding and ground, and from the secondary winding to

ground.

6. Insulation resistance measurement: The insulation resistance from the primary winding to the secondary

winding and ground must be ≥ 100MΩ.

7. The current error and phase difference of the transformer must not exceed the limits listed in Table 1.

Table 1 Basic error limits of current transformers

Accuracy

Level

Ratio difference (±)

Percentage value at rated current

1.2

0.67

0.45

0.27

0.3

0.12

100

0.3

0.12

120

0.3

0.12

Multiplication

factor

Percentage value at rated current

Phase difference (±)

100

120

Structural Characteristics

The transformer core uses an iron-based nanocrystalline alloy strip with high initial magnetic conductivity

efficiency and low saturation magnetic density as the 0.2S grade magnetic conductive material. The secondary

winding is evenly wound. The middle window is made of engineering plastic, which greatly enhances the

insulation of the product. At the same time, it serves as the positioning of the secondary coil, enhancing the

appearance and insulation strength of the product. The middle window allows you to see through the primary

busbar or wound soft cable.

Installation, Use and Maintenance

1. The instrument transformer can be installed vertically or horizontally.

2. The primary current of the instrument transformer should flow from P1 to the other terminal, and the secondary

current should flow from S1 to S2 through an external circuit. The instrument transformer has a negative

polarity. The copper wire connecting the secondary terminal to the instrument or relay should have a

cross-section of no less than 2.5 mm².

3. When current is flowing through the primary winding, the secondary winding must not be open-circuited to

prevent high voltage.

4. During long-term storage, the instrument transformer should be placed in an environment with an ambient

temperature of -25°C to +40°C, in a well-ventilated area free of corrosive gases and media. If stored for more

than one year, insulation resistance and power frequency withstand voltage tests should be performed. If any

changes are observed, the instrument transformer should be dried.

118

8.5

148

8.5

148

152

8.5

148

Model and Meaning

Design Number

Low-voltage type for power metering

Structural number, numbered according to the specified drawing

Z - cast resin insulation

M - busbar type; F - multi-turn type; W - outdoor type

Current transformer

L □□□ D－□

131 / huyuelectric.com

Power Management

Appearance and Installation Dimensions

Accuracy

Grade

0.2s, 0.5s

Rated primary

current (A)

10-60

75-150

200-500

600-800

1000-1500

Power

factor

0.8

Notes

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Models and

Specifications

LFZ1D-GHY3

LMZ1D-GHY3

LMZ2D-GHY3

LMZ3D-GHY3

LMZ4D-GHY3

Rated secondary

current (A)

Rated secondary

load (VA)

5/2.5

10/3.75

Figure 1 LFZ1D-GHY3

LFZ1D-GHY3, LMZ(1D-4D)-GHY3

Series Current Transformer

118

8.5

M向

2xφ6

148

100

8.5

M向

2xφ6

148

110

φ30

150/5

M向

152

140

750/5

2xφ6

Figure 2 LMZ1D-GHY3

Figure 3 LMZ2D-GHY3 Figure 4 LMZ3D-GHY3

8.5

M向

148

110

2xφ6

φ30

150/5

132 / huyuelectric.com

Power Management

LFZ1D-GHY3, LMZ(1D-4D)-GHY3

Series Current Transformer

Figure 5 LMZ4D-GHY3

M向

164

172

140

1000/5

2xφ6

104

133 / huyuelectric.com

GTFP-200A/4J

GTFP-200AN/4J

GTFP-200AN/5J

GTFP-125AN/7J

Outline Dimensions

412

498

429

360

Features

Specification

GTFP-200

Square Meter Sockets

Durable: Made from 1.2–1.5 mm galvanized steel with a gray powder-coated finish for corrosion resistance. Voltage Rating: Supports up to 600V AC. Spacious Design: Provides ample room for easy wiring. Knockouts Available: Knockouts on the sides, back, and bottom for flexible installation. Easy Connections: Features lay-in terminals with pressure plates. Conduit Sizes: Compatible with 1\" to 2.5\" conduit hubs.

Product Number

GTFP-200A/4J

GTFP-200A/5J

GTFP-200A/7J

GTFP-200AN/4J

GTFP-200AN/5J

GTFP-200AN/7J

GTFP-20AN/13J

Description

1 Phase, 200A.4 jaw, ring type

1 Phase, 200A, 5 jaw, ring type

3 Phase, 200A, 7 jaw, ring type

1 Phase, 200A , 4 jaw, ringless type

1 Phase, 200A, 5 jaw, ringless type

3 Phase, 200A, 7 jaw, ringless type

3 Phase, 20A.13 jaw, ringless type

222

235

208

210

134

136

130

Outline Dimensions

GTFP-200AN/7J GTFP-200A/7J

Power Management

172

134 / huyuelectric.com

Power Management

GTFP-200

Square Meter Sockets

GTFP-20AN/13J GTFP-200ARN/4J

GTFP-200AN/4J GTFP-200ADN/7J

Replacement Block Assemblies

PB200N-4J

Use on GTFP-200AN/4J, GTFP-200A/7J

PB200-4J

Use on GTFP-200A/4J

PB200N-5J

Use on GTFP-200AN/5J

135 / huyuelectric.com

GYFD-D-125AC

Outline Dimensions

465

510

465

Features

Specification

GYFD

Combination Meter Sockets

Standard meter sockets are constructed from 1.2-1.5 mm galvanized steel sheets and finished with a baked gray

polyester powder coating for enhanced corrosion resistance.

◆ Suitable for single-phase systems with a service voltage of 120/240VAC.

◆ Ample gutter space allows for easy and organized wiring.

◆ Convenient knockouts on the sides, back, and bottom for flexible conduit entry.

◆ Lay-in type terminals with pressure plates ensure quick and secure connections.

◆ Designed to accommodate conduit hubs ranging from 1“to2-1/2” .

◆ Compatible with GE-type circuit breakers.

Product Number

GYFD-D-125AC

GYFD-D-125A

GCHM2100MR2 125A

GYFD-S-125A

Description

1 Phase, 125A ,4 jaw, ring type

114

104

Matching

Breaker

THQL 2P

Outline Dimensions

PB-GCHM2100MR2 125A PB-GYFD-D-125A

GYFD-D-125A

GYFD-D-125AL

188

Power Management

136 / huyuelectric.com

Power Management

Stainless Steel Sealing Ring

GYFD

Combination Meter Sockets

GCHM2100MR2 125A GCHM2100MR2 125A GTFM-125AL/2T

GSR-1 GSR-2 GSR-3 GSR-4

Product Number

GSR-1

GSR-2

GSR-3

GSR-4

Description

Slip lock type

Screw type

Thickness

0.35mm

1.5mm

1\"

1-1/2\"

1-1/4\"

2\"

Product Number

HUB- 1\"

HUB- 1-1/4\"

HUB-1-1/2”

HUB- 2\"

Description

1\"

1-1/4\"

1-1/2\"

2\"

HUB

137 / huyuelectric.com

Power Management

HUJX-F

Series Stainless Steel Metering Box

HY □□

Series Electricity Metering Box

Application Scope

The HYPX, HYSX, and HYBX series electricity meter boxes (hereinafter referred to as \"meter boxes\") are suitable for

measuring energy in indoor power distribution circuits operating at 50 Hz, with a rated operating voltage of

400/230 V AC and a rated current up to 250 A. Circuit breakers can be installed on incoming or outgoing lines for

overload, leakage, and short-circuit protection.

The HYPX, HYSX, and HYBX series electricity meter boxes comply with national standards: GB 7251.1, GB 7251.3, and

Q/GDW 11008.

Normal Operating Conditions

1. The ambient air temperature must not exceed +60°C, with an average temperature not exceeding +35°C and a

minimum stable temperature not below -25°C.

2. At a maximum temperature of 40°C, the relative humidity must not exceed 75%. At lower temperatures, a higher

relative humidity is permitted.

3. Pollution Degree must not exceed 2.

4. The altitude must not exceed 2000 meters. 3.5 The meter box should be installed vertically in a place without

obvious shaking or vibration, and should be protected from direct sunlight and rain and snow.

Main Technical Parameters

1. Meter boxes are available in polycarbonate (PC) and ABS non-metallic, SMC fiberglass reinforced plastic

(SMC), and stainless steel metal versions. Customized with molded case circuit breakers, electricity meters,

and miniature circuit breakers, these are available.

2. Meter boxes are available in surface-mounted or concealed-mount versions, with enclosure protection ratings

of IP44 (IP20C for the operating surface).

3. A dedicated junction box is used within the meter box for simple wiring and reliable operation.

4. The meter box's incoming wiring can be single-phase or three-phase, with a rated operating voltage of

400/230V AC and a rated operating current of up to 250A.

5. Rated short-time withstand current (ICW): HYPX: 6kA, HYSX: 9kA.

Use and Maintenance

1. If the user installs their own electricity meter in the meter box, it must comply with national standards and be

calibrated. The wiring terminals must be securely fastened.

2. If the meter box is used in areas prone to thunderstorms, lightning protection measures should be implemented

at the installation site to reduce the risk of component damage from lightning strikes.

3. The meter box casing should always be kept clean and dry to minimize dust intrusion.

Application Scope

Application – For indoor power distribution circuits (50 Hz), rated voltage 380/220 V AC, rated current up to 315 A.

Supports installation of circuit breakers on incoming or outgoing lines for overload, leakage, and short-circuit

protection.

Standards – Complies with GB 7251.1 and GB 7251.3.

Normal Operating Conditions

1. Ambient temperature: max 40°C, average ≤ 35°C, min stable ≥-5°C.

2. Relative humidity: ≤ 50% at 40°C; higher humidity allowed at lower temperatures.

3. No persistent conductive contaminants (e.g., conductive dust).

4. Install vertically, away from strong vibration, direct sunlight, rain, and snow.

Main Technical Parameters

1. Construction – Stainless steel enclosure, equipped with molded case circuit breaker (MCCB),

energy meter, and miniature circuit breaker (MCB) as required.

2. Mounting Options – Available in surface-mounted or concealed-mounted versions.

Enclosure rating: IP40; operating surface rating: IP20C.

3. Wiring – Includes a dedicated junction box for simple wiring and reliable operation.

4. Electrical Parameters – Supports single-phase or three-phase wiring; rated voltage 380/220 V AC,

rated current up to 315 A.

Operation and Maintenance

1. If the user installs their own electricity meter in the meter box, it must comply with national standards and be

calibrated. The wiring terminals must be securely tightened.

2. If the meter box is used in areas prone to thunderstorms, lightning protection measures should be implemented

at the installation site to reduce the risk of component damage due to lightning strikes.

3. The meter box casing should always be kept clean and dry to minimize dust intrusion.

Model and Meaning

PX: PC+ABS non-metallic

metering box

SX: SMC non-metallic

metering box

BX: Stainless steel metal

metering box

Company Code

HY □

Model and Meaning

F: Stainless steel housing

Electricity meter box

Company code

HU JX - □

138 / huyuelectric.com

ADD:Wenzhou Bridge Industrial Zone,Yueqing,Zhejiang,China.

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WhatsApp/MOB:0086-135 0655 2522 Email:austin@huyu.com.cn huyuelectric.com

Due to the continuous updating of product technology, all data should be based on the latest confirmation of the company's technical departments.

HUYUYB250807

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