ON-BOARD INTEGRATED AC WITHSTAND VOLTAGE TEST PLATFORM
SF6 OIL-IMMERSED, NO PARTIAL DISCHARGE VARIABLE FREQUENCY SERIES RESONANT DEVICE
SF6 OIL-IMMERSED, NO PARTIAL DISCHARGE TEST TRANSFORMER
MSXB(F) SERIES VARIABLE FREQUENCY SERIES RESONANT DEVICE
POWER TEST
EQUIPMENT MANUAL
CONTENT
01 Ac Withstand Voltage Equipment
02 Transformer Test
03 High Voltage Test Series
04 Transformer Test
05 SF6 Gas Measurement And Detector
06 Insulating Oil Test Equipment
07 HV Switch Test
08 Secondary Injection Relay Tester
09 CT PT Analyzer
10 Battery Testing Series
03
17
19
26
32
36
42
43
45
46
FOCUS ON POWER TESTING EOUIPMENT
30 YEARS
Since its establishment in 1996, it has been committed to the research and development and
production of substation power testing equipment and transmission line testing equipment,
focusing on power testing products and services.
01
Company Profile
Quality You See. Service You Feel. Integrity You Trust. Brand You Choose
Wuhan Musen Electric Co., Ltd., established in 1996, is located in the Wuhan East Lake New
Technology Development Zone (Wuhan Optics Valley), enjoying convenient transportation. As an
OEM/ODM manufacturer with 30 years of experience, we specialize in the research, development,
manufacturing, sales, and service of high-voltage testing equipment and systems. Our products
include AC/DC high-voltage testers, resonance test systems, frequency resonance test systems,
transformer test equipment, transformer dielectric loss testers, and partial discharge high-voltage
testers. These products are widely used in power, energy, transportation, metallurgy, chemical
industry, mining, and water conservancy projects. All products comply with international CE
standards or Chinese national standards. Our products are exported worldwide, and our services
are recognized and highly praised by major global clients. Adhering to the 12-word principle of
quality, excellent service, integrity, and brand, we specialize in power testing products and services
and have successfully partnered with nearly 10,000 companies.
02
MS‑GTU GIS Pressure Test Chamber
SCOPE OF APPLICATION
MAIN FEATURES
TECHNICAL PARAMETERS
The 100-1200kV gas-filled, non-partial discharge combined electrical test device is suitable for
conducting insulation withstand voltage tests, partial discharge tests, and GIS transformer accuracy
tests on high-voltage, large-capacity GIS and GIL power equipment. It is an essential device for GIS
substations, GIS and GIL power equipment manufacturers, and manufacturers of pot insulators and
insulating structural components for preventive and factory testing.
Adding a high-voltage bushing port to the device allows high voltage to be extracted, enabling
various high-voltage tests on conventional high-voltage equipment.
1. High voltage is fully enclosed in a shielded space, ensuring safe and reliable testing.
2. Overall partial discharge can be controlled within 1-3 pcs.
3. Compact size minimizes space requirements and lightweight components.
4. Built-in high-voltage disconnect switch enables multi-purpose use.
5. Easy connection꞉ Direct connection to the test object makes testing more convenient.
6. Rugged and durable structure capable of withstanding long-distance transportation.
7. Reduced system power capacity requirements
≤5%
≤65K
Rated capacity 50-2000kVA
Output voltage 100kV、200kV、250kV、300kV
500kV、750kV、1000kV、1200kV
Runtime ≤5min
Impedance voltage
Temperature rise
03
AC withstand voltage equipment
MS‑GTU Variable Frequency
NO PD Withstand Voltage Test System
SCOPE OF APPLICATION
MAIN FEATURES
TECHNICAL PARAMETERS
1. High voltage is fully enclosed in a shielded space, ensuring safe and reliable testing.
2. Overall partial discharge can be controlled within 5 pc.
3. Compact size minimizes space requirements and lightweight components.
4. Built-in high-voltage disconnect switch enables multi-purpose use.
5. Easy connection꞉ Direct connection to the test object makes testing more convenient.
6. Rugged and durable structure capable of withstanding long-distance transportation.
7. Reduced system power capacity requirements.
145kV power system GlS non-partial discharge Ac withstand voltage test, applicable to
test productmaximum capacitance s 0.0001jF/bay (based on 3 bays + 9m GlS internal
busbar s 0.001uF) and testproduct total capacitance < 0.004uF, test frequency 100Hz,
maximum test voltage 235kV.
Output power 50kW
Input voltage 380V+10% three-phase; 50Hz
Output waveform Single-phase 0~350V
Frequency adjustment range 20~300Hz
Frequency Resolution 0.01Hz
Partial discharge <10pC
04
MS‑GTU GIS Pressure Test Chamber Project Case
600kV SF6 gas non-partial discharge test transformer (mouth to mouth) 800kV SF6 gas non-partial discharge test transformer (mouth to mouth)
600kV SF6 gas non-partial discharge test transformer (mouth to mouth) 600kV SF6 gas non-partial discharge test transformer (bushing)
Workshop equipment site Workshop commissioning site
05
MS‑YDQW
In tegra ted Sf6 Gas No Par tial Discharge
Tes t Transformer (bushing )
The device integrates a transformer, voltage divider, and protective resistor, and is equipped with
safetyprotection measures such as overcurrent protection and overvoltage protection to ensure a safe
and reliabletest process. lt also features a user-friendly interface and data display function, making it
easy for users toperform test operations and view results.
SCOPE OF APPLICATION
TECHNICAL PARAMETERS
<4%
<9%
Rated capacity 30-1000kVA Customizable
Rated voltage AC 100-1200kV
Runtime <5min
No-load loss
Load loss
Partial discharge <5PC
Small footprint, less on-site wiring
no fear of bumpy transportation
AC withstand voltage equipment
06
MS‑YDOW
Sf6 Gas No PD Test Transformer (bushing)
SCOPE OF APPLICATION
TECHNICAL PARAMETERS
Rated capacity 50-1200kVA ≤1.5%
Input voltage 380V
Output voltage 50-1200kV
accuracy
The non-partial discharge gas-filled test transformer is designed, developed andmanufactured by
our company by introducing and absorbing advanced foreign technologieslt is widely used in
manufacturers of electrical appliances, cables, motors, transformers, mutua谄inductors, insulation
materials and related high-voltage components, as well as high-voltagetest laboratories in power,
scientific research and colleges and universities. lt can performpartial discharge and power frequency
withstand volt-… tests on their products.
≤5Pc
Overcurrent and voltage protection alarms
automatically return to zero
Partial discharge
Protection function
MAIN FEATURES
1. Filled with high-insulation SF6 gas as the insulating medium;
2. Compact size, light weight, high-grade craftsmanship, beautiful appearance, and easy
transportation;
3. Due to the arc-extinguishing properties of SF6 gas and its unique process structure, partial
dischargeis minimal, ≤5 PC at rated voltage;
4. The test process is simple and intuitive, and the operation is convenient and easy;
5. Effectively eliminates noise interference from the power supply;
6. Utilizes automatic control technology, with a high degree of automation and strong antiinterferencecapabilities꞉
7.Utilizes fast electronic protection devices for high reliability.
07
MS‑YDJW No PD Test Transformer
Suitable for manufacturers of electrical appliances, cables, motors, transformers, instrument
transformers, insulation materials, and related high-voltage components, this tester can perform
partial discharge and power frequency withstand voltage tests on their products.
SCOPE OF APPLICATION
TECHNICAL PARAMETERS
<5 PC
Overcurrent and voltage protection
alarms with automatic reset
Rated capacity 50-1200 kVA (customizable)
Output Voltage AC 50-1200 kV, including 50, 100,
150, 200, 250, 300, 500, and 1000 kV
Transformation Ratio Accuracy <1.5%
Partial Discharge
Protection
Transformer Losses No-load loss꞉ <4%; Load loss꞉ <9%
MAIN FEATURES
1. Filled with high-insulation transformer oil as the insulating medium;
2. Low partial discharge (≤5 PCD) at rated voltage;
3. Simple and intuitive test process, easy to operate;
4. Effectively eliminates power supply interference;
5. Utilizes automatic control technology, offering a high degree of automation and strong antiinterference capabilities;
6. Utilizes fast electronic protection devices for high reliability.
AC withstand voltage equipment
08
Non-PD Inductive Withstand Resonant Test SystemThis device utilizes a linearly amplified
variable-frequency power supply with reactor-coupled compensation, making it suitable for
inductive withstand voltage and partial discharge testing of power transformers of various capacities
and voltage levels.
SCOPE OF APPLICATION
MSWJXZ
No Partial Discharge Induction Voltage
Withstand Resonance Test System
MAIN FEATURES
1. GIS, circuit breakers, transformers, cables, insulators, and other equipment at voltages up to
220kV can simultaneously perform partial discharge (PD) measurements during AC withstand
voltage testing. The system's own partial discharge level is less than 10pc, enabling precise
measurement of the system's insulation condition.
2. AC withstand voltage testing can be performed at a fully simulated power frequency. Test
conditions more closely resemble those of the equipment in grid operation, providing a more
realistic reflection of its operating conditions.
3. In variable-frequency mode, the frequency can vary from 50Hz to 300Hz, adapting to higher
capacity requirements and providing greater flexibility in test environments and operating
conditions.
4.The non-PD power supply can also be used as a test power source for long cables, suitable for
AC withstand voltage and partial discharge testing of cables.
09
TECHNICAL PARAMETERS
Rated Inductance 435H
30-300Hz
Rated Voltage 750kV
Rated Current 6A
Rated Output Power 4500kVA
Resonant Reactor
Operating Frequency
Rated Capacitance
1) System Operating Low Pressure 3MPa±1MPa
2) System Operating Medium Pressure 8MPa±1MPa
3) System Operating High Pressure 16MPa±1MPa
MAIN FEATURES
1. On-board Mobile Integrated Platform꞉ The entire 750kV series resonance test system is highly
integrated into a dedicated vehicle, enabling flexible deployment of testing capabilities.
2. Hydraulic Accumulation and Reduction System꞉ Core components (such as reactors) are
automatically raised and lowered via an on-board voltage platform, eliminating lifting and manual
handling, significantly improving efficiency and safety.
3. Rapid On-site Deployment꞉ Testing begins immediately after the hydraulic outriggers are
leveled, eliminating complex lifting procedures and significantly reducing preparation time.
4. Fully Automated Test Process꞉ Automatic tuning locks the resonance point, allowing one-click
completion of the entire voltage step-up, timing, and voltage step-down process based on preset
parameters.
5. Remote and Secure Operation꞉ Supports fiber-optic remote control, ensuring operators can
complete tests from a safe distance.
6. Intelligent Protection and Monitoring꞉ Multiple real-time protections (overvoltage, overcurrent,
flashover, etc.) combined with key parameter monitoring and data logging ensure safe and reliable
testing.
7. Reliable Grounding꞉ Integrated large-section grounding devices and ground detection ensure
reliable equipment grounding during testing.
750kV AC Withstand Voltage Test Platform
Duty ≥30min Hydraulic System
8000pF
Multiple specifications꞉ 500kV, 750kV, and 1000kV
integrated AC auxiliary voltage test platform.
11
MS‑CZ Vehicle‑mounted High‑pressure
Inflatable No partial Discharge Combined Test Device
TECHNICAL PARAMETERS
1-3pc at rated voltage (normal environment)
No more than 65kV (50Hz) after 60 minutes of operation at rated current
Voltage Levels 100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV
Capacity 50-2000kVA
0.35-10kV (primary voltage)
Input Voltage
Partial Discharge
Temperature Rise
High Voltage
Generation Method
MAIN FEATURES
1. A vehicle-mounted hydraulic lift mechanism allows for easy mobility and facilitates on-site testing.
2. High voltage is fully enclosed within a shielded enclosure, ensuring safe and reliable testing.
3. The overall PD level can be controlled to within 1-3 pcs.
4. Compact size minimizes space requirements and lightweight components.
5. A built-in high-voltage disconnector enables multi-purpose use.
6. Easy connection꞉ Direct connection to the test product facilitates testing.
7. Rugged and durable construction withstands long-distance transportation.
High-voltage transformer step-up and series resonance(power frequency,
variable frequency). All step-up methods are single-stage, no cascade step-up required.
13
MAIN FEATURES
MS‑CZWJ Vehicle‑mounted
No PD Withstand Voltage Test System
1. A large 27-inch LCD display provides clear and intuitive readings for voltage, current, time, status information,
and prompts.
2. An all-Chinese interface provides simple and straightforward operation, adaptable to a variety of applications.
3. Touchscreen operation allows all functions to be preset, enhancing product safety and reliability.
4. Status reminder function with fully Chinese-guided operation.
5. Alarm function꞉ A 5-second buzzer alerts when a combination alarm is triggered; a buzzer alert sounds when
voltage signal acquisition is abnormal.
6. Emergency stop function꞉ In automatic control, this function allows for an emergency stop at any point during
voltage increase or decrease.
7. Automatic timing function꞉ In automatic control, the device automatically starts timing when the voltage rises
to the set value. When the timer expires, the device automatically decreases the voltage and returns to zero.
8. Manual control mode꞉ Similar to traditional electric voltage increase/decrease, voltage increase/decrease is
controlled by touch buttons, the device automatically determines upper and lower limits, and provides highvoltage overvoltage, low-voltage overcurrent, and high-voltage overcurrent protection.
TECHNICAL PARAMETERS
1-3pc at rated voltage (normal environment)
No more than 65kV (50Hz) after 60 minutes of operation at rated current
Voltage Levels 100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV
Capacity 50-2000kVA
0.35-10kV (primary voltage)
Input Voltage
Partial Discharge
Temperature Rise
High Voltage
Generation Method
High-voltage transformer step-up and series resonance (power frequency, variable
frequency). All step-up methods are single-stage, no cascade step-up required
AC withstand voltage equipment
14
Common specifications (kVA/kV):
135/108、270/108、270/270、540/270、1620/540、400/800、8100/500
SCOPE OF APPLICATION
1.AC withstand voltage test for 0.8km of 220kV/630mm² cable, 2km of 110kV/630mm² cable, and 3km of
35kV/240mm² cable
2.AC withstand voltage test for the neutral point of a 220kV main transformer and the line end of a 110kV
main transformer
3.AC withstand voltage test for circuit breakers, PTs, CTs, insulators, and GIS components up to 220kV
Applicable to 10-220kV substation equipment and cable AC withstand voltage test
MSXB‑F Series Variable
Frequency Series Resonant Device
MSXZ(f) -1620kVA/540kV
Variable Frequency Series Resonance
15
MSXB-F-4000kVA/800kV
High Voltage Series Resonance Test Device
SCOPE OF APPLICATION
SCOPE OF APPLICATION
1.AC withstand voltage test for 1.2km of 220kV/630mm² cable
and 3.5km of 110kV/630mm² cable
2.AC withstand voltage test for the neutral point of a 220kV
main transformer and the line end of a 110kV main transformer
3.AC withstand voltage test for circuit breakers, PTs, CTs,
insulators, GIS, etc., 220kV and below
MSXZ(f)-8100kVA/500kV
variable frequency series resonant transformer
1.AC withstand voltage test for 4km of 220kV/1000mm² cable, 10km of 110kV/1000mm² cable, and
13km of 35kV/240mm² cable
2.AC withstand voltage test for the neutral point of a 220kV main transformer and the line end of a
110kV main transformer
3.AC withstand voltage test for circuit breakers, PTs, CTs, insulators, GIS, etc., 220kV and below
AC withstand voltage equipment
16
SCOPE OF APPLICATION
TECHNICAL PARAMETERS
MS‑101G Series
High Voltage Dielectric loss Tester
Upgrade 8 major functions to fully meet test reguirements
The dielectric loss insulation test can effectively detect the overall moisture deterioration and
deterioration of the insulation of electrical equipment, as well as local defects. It is widely used in
electrical manufacturing, electrical equipment installation, handover and preventive testing.
The variable frequency power supply adopts a high-power switching power supply, outputting
single-frequency 45Hz~65Hz and dual-frequency 47.5Hz\\52.5Hz, 45.0Hz\\55.0Hz, 57.5Hz\\62.5Hz,
55.0Hz\\65.0Hz pure sine waves, automatically increasing voltage, and can provide a maximum voltage
of 12kV; it automatically filters out 50Hz interference and is suitable for on-site testing with large
electromagnetic interference such as substations.
Four channels/forward and reverse measurementCVT measurementCVT ratio polarity errorLCR function/
insulation resistance functio
custom madel Output voltage 12kV, tgd-f curve, various data analysis, etc.
Model
MS-101G1 Four channels / simultaneous forward and reverse measurement / English program / CVT measurement
MS-101G2 Four channels/forward and reverse measurementCVT measurement/CVT ratio polarity error/LCR function
MS-101G3
MS-101G4
Function
Simultaneous forward and reverse measurement
Four-channel simultaneous measurement
CVT ratio polarity
CVT self-excitation method
LCR measurement
Bluetooth and data transmission
17
Transformer Test
MAIN FEATURES
1.Frequency conversion and anti-interference
Automatically identifies 50Hz/60Hz system voltage and can accurately measure under
200% interference
2.4-channel forward connection
Internal/external standard capacitanceinternal/external high voltage
3.Reverse wiring low voltage shielding function
220kV VCT busbar grounding, C11 performs 10kV reversewiring dielectric loss
measurement without disconnectingthe line
4.C1/C2 simultaneous measurement
CVT self-excitation measurement,C1/C2 simultaneous measurement
5.Measures ratio, polarity and phase errors
CVT ratio measurement function, can measure ratio,polarity and phase error
6.Can be connected to an external 40Hz~70Hz
high voltage power supply
7.Wireless Bluetooth interface and datareturn function
8. Built-in computer interface
APPLICABLE SCENARIOS
18
YDQ/YDJZ/GTB
AC/DC Voltage Withstand Tester
The scope of application is mainly used for conducting insulation strength tests on various electrical products,
electrical components, insulation materials, etc. under specified voltages, to assess the insulation level of the
products, discover insulation defects of the tested products, and measure the ability to withstand overvoltage.
It is the preferred product for voltage withstand testing equipment required by departments related to power
operation, electrical and appliance manufacturing enterprises, metallurgy, coal mines, electrified railways, scientific
research institutions, and universities
It is an essential testing equipment for power equipment inspection and preventive testing
SCOPE OF APPLICATION
Fully automatic Manual Fully automatic Manual
19
High Voltage Test Series
TECHNICAL PARAMETERS
Test transformer specifications
and parameters
capacity
(kVA)
High voltage
output voltage(kV)
High voltage
output current(mA)
Low voltage input
V A
transformation
ratio
5
5kVA
50 100 200
25
500
5 100 50 200 1000
10
10
50
100
200
100
220/380
200/380
50/26
500
1000
10kVA
20kVA
30kVA
20
20
20
50
100
150
400 380
200 380
133 380
53
500
1000
1500
30
30
30
30
30
50 600
100 300
150 200
200 150
250 120
380
380
380
380
380
79
500
1000
1500
2000
2500
50kVA
50
50
50
50
50
50 1000
100 500
150 333
200 250
250 200
380
380
380
380
380
132
500
1000
1500
2000
2500
1000kVA
100
100
100
100
150
200
1000 3000
666 3000
500 3000
33
1000
1500
2000
Gas-filled transformers Oil-immersed transformers Dry-type transformers
20
MAIN FEATURES
TECHNICAL PARAMETERS
1. Advanced technology꞉ adopting digital frequency conversion technology, microcomputer control,
fully automated testing processes such as boost, buck, measurement, and protection;
2. Equipment operation꞉ simple wiring and convenient use;
3. Comprehensive protection꞉ multiple protections (overvoltage protection, high and low voltage
side overcurrent protection), quick action (action time ≤ 10ms), instrument safety and reliability;
4. Safe and reliable꞉ The controller and high-voltage generator are connected at low voltage, with
photoelectric control, ensuring safe and reliable use;
5. Adopting high and low voltage closed-loop negative feedback control circuit, the output has no
capacitance rise effect.
MSVLF‑80kV/1.1uF
Ultra‑Low‑Frequency 0.1Hz Test Device
1%
≤3%
Rated Output Voltage 80kV
Output Frequency 0.1Hz, 0.05Hz, 0.02Hz
0.1Hz, maximum 1.1µF; 0.05Hz, maximum 2.2µF;
0.02Hz, maximum 5.5µF Load Capacity
Measurement Accuracy
Positive and Negative
Voltage Peak Erro
Voltage Waveform Distortion ≤5%
MSVLF‑101G Ultra‑Low
Frequency Cable Dielectric Loss Tester
A single unit performs insulation resistance, dielectric loss, and AC/DC withstand voltage tests on
10kV/35kV cables.
TECHNICAL PARAMETERS
Yes
0.5µF at rated voltage 0.1Hz; 12µF at low
frequency or low voltage
Power Supply 100-240V 50/60Hz, ±10%
Input Power 400VA
Output Frequency 0.01Hz - 0.1Hz in 0.01Hz increments
Frequency Optimization
Output Load Capacity
21
Designed for leakage current and DC withstand voltage tests of water-cooled generators
ZGS‑80kV 300mA Water‑cooled
Generator DC Withstand Voltage Test Equipment
Testing with Blowing Water
Advantages꞉ A standard DC high-voltage generator can be used for testing. The equipment is
lightweight, easy to operate, and provides accurate readings, unaffected by water quality.
TECHNICAL PARAMETERS
1.0% ± 2 digits
1.0% ± 2 digits
Output voltage (kV) 80kV
Output current (mA) 300
Output power (kW) 24
Voltage measurement error
Total current measurement error
Leakage current measurement error 2.0%(±1uA)
MAIN FEATURES
High Voltage Test Series
MS‑3126A Insulation Resistance Tester
It features five measurement ranges꞉ 500V, 1000V, 2500V, 5000V, and 10000V, and can test
resistances up to 10TΩ.It is powered by a lithium-ion battery that can be charged while in use.
1. Insulation resistance range꞉ 10TΩ @ 10kV, with an adjustable
short-circuit current up to 10mA.
2. Automatically displays polarization index (PI) and dielectric
absorption ratio (DAR) values, and can measure leakage current and
capacitance.
3. Excellent anti-interference performance꞉ the instrument
maintains test accuracy even with interference currents up to 2mA.
4. Rapid discharge of capacitive test pieces. When testing
c a b l e s , m a n u a l d i s c h a r g e i s u n n e c e s s a r y ; t h e i n s t r um e n t
automatically discharges quickly
MAIN FEATURES
22
TECHNICAL PARAMETERS
ZGF Series DC High Voltage Generator
The instrument is suitable for DC withstand voltage test and leakage test of zinc oxide lightning
arrester, magnetic blowout lightning arrester, power cable, transformer, generator and other equipment
in the power, railway, chemical, mining, metallurgy, steel and other departments. It can also be used as
power source for electrostatic dust collection and spraying.
Integrated Split body
SCOPE OF APPLICATION
specifications
structure
Rated voltage
(kV)
Rated current
(mA)
Rated power (W)
Voltage accuracy
current accuracy
60/2 60/3 60/5 120/2 120/3 120/5 200/2 200/3 200/5 300/2 300/3
300/5
300/5
Integrated Split body
60 120 200 300
2 3 5 2 3 5 2 3 5 2 3 5
120 180 300 240 360 600 400 600 1000 600 900 1500
± (1.0% reading+2 words)
± (1.0% reading+2 words)
23
High Voltage Test Series
It is an essential equipment for electrical tests where high current is required, and is used in
power plants, distribution substations, electrical appliance manufacturing, scientific research,
laboratories and other units.
SCOPE OF APPLICATION
TECHNICAL PARAMETERS
MSDDG Series High Current Generator
Capacity (kVA) Output Current (A) Weight(kg) Notes
Can be made
into split or
integrated
structures
3 500 24
5
10
12
15
1000
2000
2500
3000
40
60
68
75
20 4000 110
30
40
60
75
5000
6000
8000
10000
160
180
240
280
split type
Capacity (kVA) Output Current (A) Weight(kg) Notes
24
This instrument is widely used for partial discharge measurement, product type testing, and
insulation operation monitoring of various high-voltage electrical products, including transformers,
mutual inductors, high-voltage switches, zinc oxide arresters, and power cables. It offers high
sensitivity, covers a wide range of sample capacitance, and is suitable for a wide range of test products.
It also features a comprehensive range of input units (detection impedance) and offers nine frequency
band combinations. After proper calibration, it can directly read the discharge capacity of a discharge
pulse.
Common specifications
10kVA/50kV is used for 10kV level
15kVA/150kV is used for 35kV level
25kVA/250kV is used for 110kV level
Inflatable non-partial discharge pressure-resistant device
system composition
1. Transformer without partial discharge test
2. Non partial discharge transformer control console
3. Non partial discharge isolation filter transformer
4. Non partial discharge coupling capacitor (with
built-in voltage divider function)
5. No partial discharge protection resistor
6. Partial discharge tester
150kV
less than
5pc
250kV
less than
5pc
Fully automatic oil-immersed non-partial discharge pressure-resistant device
High Voltage Test Series
25
Non‑partial Discharge Power Frequency
Withstand Voltage Test Device
YDQ(W)/YDJZ(W)
Transformer Test
MSJF‑3001B Ultrasonic Partial Discharge Tester
SCOPE OF APPLICATION
Used to detect partial discharge in operating switchgear, transformers, cables, GIS, overhead
lines, and more.A built-in two-in-one ultrasonic and geomagnetic wave sensor allows for PD
detection in switchgear without the need for external sensors.
MAIN FEATURES
Non-invasive detection eliminates the need for power outages, making operation simple and
versatile.Configurable with different sensors, it can detect partial discharge in virtually any highvoltage electrical equipment.Provides various discharge patterns, including time-domain waveforms,
PRPD, and PRPS, enabling analysis of different discharge types.The test bandwidth ranges from
30kHz to 2.0GHz, enabling detection principles applicable to various frequency bands.
26
MSBR‑II Transformer
Winding Deformation Tester
TECHNICAL PARAMETERS
1MΩ
50Ω
Amplitude measurement range (-100dB) to (+20dB)
Amplitude measurement accuracy +20dB ~ -60dB ±1dB
Sweep frequency accuracy
Signal input impedance
In-phase test repetition rate 99.5%
internal structural fault detection of 63kV~500kV power transformers
-60dB ~ -100dB ±2dB
0.01%
Signal output impedance
MS‑560 Transformer
Capacity Characteristics Tester
Used to measure no-load current, no-load loss, impedance voltage, load loss, and zerosequence impedance of various types of transformers.
1. Automatically performs waveform distortion and temperature
correction.
2 . M e a s u r e s t h r e e - p h a s e v o l t a g e / c u r r e n t , a v e r a g e
voltage/current, and two-phase active power.
3. Measures harmonics and total distortion for each phase of
voltage and current.
4. Displays real-time waveforms for each phase of voltage and
current.
MAIN FEATURES
TECHNICAL PARAMETERS
Voltage measurement range 0-750V (wide range)
Current measurement range 0-5-100A All internal ranges are automatically switched
27
Transformer Test
MS‑103 Transformer
Short Circuit Impedance Test System
TECHNICAL PARAMETERS
0-80A AC
1Ω-200Ω
Basic measurement accuracy Voltage, current, and impedance 0.2% ± 3 digits
Power
Voltage measurement range
Current measurement range
Capable of measuring transformer short-circuit impedance,
short-circuit reactance, short-circuit resistance, and three-phase impedance voltage.
0-800V AC
Impedance measurement range
MS‑100D Transformation Ratio Tester
This instrument overcomes the shortcomings of traditional ratio bridge testing,
completing three-phase ratio testing in one go, with fast testing speed and high
accuracy, greatly improving testing efficiency.
1. Wide testing range, up to 10000.
2. Displays hexagonal vector diagram and group number
3. Blind measurement of transformation ratio and group number
4. Phase angle measurement
5. High and low voltage reverse connection protection, transformer
short-circuit protection, and inter-turn short-circuit protection
6. AC and DC power supply options to meet diverse site requirements
MAIN FEATURES
TECHNICAL PARAMETERS
Measuring range 0.9 to 10,000
Phase angle measurement accuracy 0.1°
0.5% ± 3 digits (cosφ > 0.1),
1.0% ± 3 digits (0.01 < cosφ ≤ 0.1)
Phase angle measurement range 0 to 360°
28
MS‑100ES Handheld Three‑Phase
Transformer Turns Ratio Tester
TECHNICAL PARAMETERS
0.1%
0.0001
Turns ratio measurement range 0.9 to 10,000
Measurement speedt Complete three-phase test in 35 seconds
Measurement accuracy
Low-voltage side voltage
measurement accuracy
Turns ratio measurement accuracy
High-voltage side voltage measurement
accuracy꞉ 0.05%
Turns ratio resolution
Single-phase measurement, automatic testing of three-phase windings. No power
supply is required on site to complete the test work. A full charge can perform more than
500 measurements continuously.
0.1% (0.9-200), 0.2% (200-2000), 0.3% (2000-10,000)
Full-range 0.1-level equipment available upon request
1. Single-phase and three-phase measurements
2. Displays hexagonal vector diagram and group number
3. Blind measurement of transformation ratio and group number
4. Turns ratio and operating voltage ratio measurements
5. Demagnetization function eliminates residual magnetism in the transformer core
6. AC and DC power supply options to meet diverse field requirements
MAIN FEATURES
MS‑100B(E) Transformer
Turns Ratio Testing Equipment
MAIN FEATURES
TECHNICAL PARAMETERS
The instrument offers fast testing speeds, completing a
three-phase ratio test in just 10 seconds with a single
connection. It also features a blind test function, allowing you
to perform ratio and group tests even when the high and low
voltage connection configurations are unknown. It is suitable
for testing distribution transformers up to 1000kV transformers,
single-phase transformers, and current transformers.
Range
Accuracy
Resolution
0.9 to 10,000
±(reading × 0.2% + 2 digits) (≤ 500)
(reading × 0.5% + 2 digits) (greater than 500)
0.9 to 9.9999 (0.0001)
29
Transformer Test
MS‑207T Transformer On‑load Switch Tester
Used to measure the transient waveform, transient time, transient resistance,
and three-phase synchronicity of transformer on-load tap-changers.
TECHNICAL PARAMETERS
10 kHz/s
Transition resistance꞉ 0.5Ω to 20Ω
Output current ≥ 1A, 3 channels
Data sampling Sampling
channels
Sampling frequency
6 channels
Measurement range
MS‑510S2 Three‑Channel
Winding DC Resistance Tester
This device integrates magnetizing method testing, three-phase testing (Yn, Y, Δ),
and demagnetization functions. It completes all DC resistance tests with a single
connection, offering fast testing speed.
MAIN FEATURES
1. Th ree-phase measu remen t me thod, calcula tion o f th ree-phase
imbalance rate.
2.25kΩMaximum output current 20A, test range up to 25kΩ
3.Automatically calculates the resistance change rate over 5, 15, and 30
seconds.
TECHNICAL PARAMETERS
Single-Phase꞉ 20A, 10A, 5A, 1A, 0.1A, 10mA, <1mA
Three-Phase꞉10A+10A, 5A+5A, 1A+1A, 0.1A+0.1A
Output Current
30
MS‑520S Three‑channel DC Resistance Tester
Integrates three-phase testing, magnetizing, and demagnetizing functions.
TECHNICAL PARAMETERS
20A+20A;10A+10A;5A+5A;1A+1A;
200mA+200mA;20mA+20mA;
Three-phase test
Single-phase test 40A; 20A; 10A; 5A; 1A; 200mA; 20mA;
MAIN FEATURES
1.Mainly suitable for measuring inductive resistance in transformers,
instrument transformers, and other devices.
2.Measures three-phase DC resistance on star-connected windings
and automatically calculates three-phase imbalance.
MS‑520 DC Resistance Tester
Offers six output current settings, with a maximum of 20A and a minimum of
<5mA, making it suitable for measuring the DC resistance of a wide range of
transformers and instrument transformers.
TECHNICAL PARAMETERS
Output current 20A, 10A, 5A, 2A, 100mA, <5mA
Measurement range
100μΩ to 1Ω (20A), 500μΩ to 2Ω (10A),
1mΩ to 4Ω (5A), 5mΩ to 10Ω (2A),
100mΩ to 200Ω (100mA), 200Ω to 100kΩ (<5mA)
MAIN FEATURES
1.Wide measurement range (100μΩ to 100kΩ)
2.Discharge alarm function, clear discharge indication
3.On-load tap-changer can be directly switched during measurement
Accuracy 0.2%±2μΩ
31
MS‑401 SF6 Gas Density Relay Calibrator
TECHNICAL PARAMETERS
Measures the alarm value, latch value, alarm return value, and latch return value
of SF₆ gas density relays. Both single latch and double latch measurements are
available. The instrument also features normal temperature pressure gauge
calibration and 20°C pressure gauge calibration.
50W
Class 0.2
Ambient temperature -20°C to 70°C
Relative humidity 90% RH
Power supply AC220V, 50Hz
Power consumption
Accuracy
Pressure display resolution 0.001MPa
Pressure calibration range 0 to 1MPa
Ambient temperature display resolution 0.1°C
Single alarm, single latch,
single alarm and single latch,
single alarm and double latch
Calibration options
SF6 Gas Measurement and Detector
MS‑403 SF6 Gas Leak Detector
TECHNICAL PARAMETERS
±2% FS (0-1000 ppm)
≤± 1%
Detection range 0-1500 ppm
Resolution 0.1PPmv
Detection range 0‑1500PPmv
Accuracy
Repeatability
Performs qualitative and quantitative leak detection in SF₆ electrical equipment.
1. Accurately locates leak points in SF₆ gas-filled electrical equipment.
2.Displays multiple parameters simultaneously, including SF₆ concentration,
temperature and humidity, battery indicator, time, and diaphragm pump status.
3.Utilizes non-dispersive infrared (NDIR) technology and a German-made sensor.
MAIN FEATURES
32
MS‑405 SF6 Trace Moisture Tester
Integrates three-phase testing, magnetizing, and demagnetizing functions.
TECHNICAL PARAMETERS
TECHNICAL PARAMETERS
MAIN FEATURES
1. Chilled mirror balance principle eliminates measurement errors caused by
hysteresis, resulting in high measurement accuracy.
2. Excellent repeatability, fast response, high sensitivity, and excellent stability.
3. Conversion between dew point and moisture concentration is possible.
SCOPE OF APPLICATION
Applications꞉
1. Trace moisture monitoring in SF₆ gas-fired electrical equipment
2. SF₆ gas cylinder quality testing
3. High-purity gas manufacturing
4. Dry gas supply for the semiconductor industry
5. R&D applications
6. Cleanroom/dryroom monitoring
7. Humidity testing of industrial gases in metal heat treatment sites and laboratories.Examples
include air, CO₂, N₂, H₂, O₂, SF₆, He, Ar, and other inert gases.
Measurement Method RC measurement principle
Ambient Temperature -20°C to +60°C
Measurement Range
-80°C to +20°C(When the dew point is below 0°C,
the sensor output is frost point)
Response Time꞉ 63% [90%]
+20°C to -20°C꞉ Td꞉ 5s [45s]
-20°C to -60°C꞉ Td꞉ 10s [240s]
Measurement Error Better than ±2°C
Repeatability ±0.5°C, Resolution꞉ 0.01°C
MS‑405B SF6 Dew Point Analyzer
Dew point measurement range -60°C to +20°C (at 20°C atmospheric pressure)
Dew point accuracy
Dew point repeatability ±0.05°C
±0.1°C to ±0.2°C
33
MS‑406 SF6 Purity Tester
TECHNICAL PARAMETERS
0 ~ 100 Kpa
Measuring range 90% ~ 99.99%
Measuring accuracy
Response time
Inlet pressure
< 2 minutes
By simultaneously monitoring SO₂, H₂S, and CO decomposition products, it can quickly
detect and diagnose early-stage faults within SF₆ electrical equipment (circuit breakers,
instrument transformers, transformers, GIS, bushings, etc.) on-site.
TECHNICAL PARAMETERS
Measuring range 0-100ppm
Minimum detectable level ≤ 0.1ppm
± 0.3%
Accuracy ± 0.5%
MAIN FEATURES
1.The sensor probe can automatically calibrate the zero point, automatically
eliminate the system error introduced by zero point and drift, and ensure the
accuracy of each measurement.
2.Quick and gas-saving꞉ After the instrument is turned on and enters the
measurement state, each purity measurement takes about 2 minutes.
3.Self-locking connector꞉ Uses original imported self-locking connector, which is
safe, reliable and leak-free.
MS‑407 SF6 Gas Decomposition Analyzer
H₂S
So₂
Repeatability ≤ 1%
Measuring range 0-100ppm
Minimum detectable level ≤ 0.1ppm
Accuracy ± 0.5%
Repeatability ≤ 1%
Measuring range 0-1000ppm
CO
Minimum detectable level
Measuring range
Measuring range
≤ 1ppm
± 0.5%
≤ 1%
34
Combining an SF₆ moisture meter, SF₆ purity meter, and SF₆ decomposition
product analyzer, this single instrument combines the functions previously required
three instruments. A single on-site measurement allows you to test all three
indicators.
TECHNICAL PARAMETERS
SF₆ Gas Trace Moisture
① -80 to +20°C (supports ppmv, etc.)
② Response Time 63% [90%]
③ +20 to -20°C Td 5s [45s]
④ -20 to -60°C Td 10s [240s]
SF₆ Gas Purity 1. Purity Accuracy꞉ ±0.5% FS
2. Repeatability꞉ ±0.5%
Decomposition
Product Parameters
H2S:1~200PPmv
SO2:1~100PPmv
CO:1~500PPmv
MS-408 SF₆ Gas Analyzer
35
MS‑408 SF6 Gas Analyzer
MS‑409 Insulating Oil Gas Content Tester
For transformers with voltage levels of 330-750 kV, samples are taken after a
specified rest period to measure the gas content (volume fraction) in the oil.
Insulating Oil Test Equipment
TECHNICAL PARAMETERS
Better than the permissible reproducibility of the DL/T-703
< 40 mL/time (including flushing oil)
Range 0.05-10.00% (gas content)
Accuracy 0.5%
Repeatability Better than the permissible repeatability of the Dl423
Reproducibility
Oil usage
1. Wide detection range and accurate testing.
2. On-site measurement, complementing the limitations of
chromatographic instruments.
3. Simple operation, convenient maintenance, and calibration.
4. Minimizes insulating oil usage.
MAIN FEATURES
MSKS‑403 Fully Automatic
Open‑Cut Flash Point Tester
Utilizes a high-performance ion ring to detect sudden changes in flame
conductivity resistance.
TECHNICAL PARAMETERS
0.1°C
Temperature measurement 40-400°C
Measurement accuracy ±1°C
Repeatability 0.5%
Resolution
1. Automatic measurement process including detection, ignition, alarm,
cooling, and printing.
2. Platinum heating wire with selectable electric and gas ignition modes.
3. Automatic atmospheric pressure detection and correction of test results.
4. Power-off memory function automatically saves test results.
MAIN FEATURES
36
MSQN‑601 Transformer Oil Pour
Point Automatic Tester
TECHNICAL PARAMETERS
+10°C to -70°C
20ml per test
Temperature Measurement Platinum Resistance Temperaturet
Accuracy ± 1°C
Resolution 0.1°C
Measuring Range
Test Oil Quantity
Featuring self-diagnostic capabilities, it analyzes samples quickly, accurately, with
excellent repeatability, stability, and reliability. This instrument is a specialized
instrument for the power, petroleum, and chemical industries, replacing imported
products. When testing the pour point of petroleum products, the display shows the pour
point temperature when the sample cools to the lowest temperature at which it can flow
(the pour point), an audible prompt sounds, and the test results are printed.
MAIN FEATURES
Cooling Water Requirement꞉ Pressure 4.9×101 to 4.9×105 Pa
Flow Rate 1.5 L/min
MSWS‑2 Karl Fischer Titrator
Constant pressure detection, high accuracy, fast measurement speed, stable and reliable
TECHNICAL PARAMETERS
0.1μg
Measuring range 1μg-200mg
Measuring accuracy 3μg-1000μg ≤ ± 3μg, ≥ 1000μg ≤ ± 0.3%
Electrolysis current 0-400mA
Resolution
MAIN FEATURES
1. Real-time electrolysis curve graph, monitor reagent status at any time;
2. Power-off memory function automatically saves results, with a capacity of 100 data sets;
3. Touchscreen LCD display, simple operation, and user-friendly interface;
4. High measurement accuracy, fast measurement speed, and stable data
37
MSYN‑1301 Kinematic Viscometer
TECHNICAL PARAMETERS
± 0.01°C
Number of bath wells 4
Temperature control range
Constant temperature accuracy
Measurement accuracy
± 0.1°C
Imported sensor and digital PID temperature control technology provide a wide
temperature control range and high accuracy.
Room temperature to 130°C
MAIN FEATURES
1. Power-off memory function automatically saves results and can store up to 100 sets of data.
2. Touchscreen LCD display for simple operation and a user-friendly interface.
3. High measurement accuracy, fast speed, and stable data.
Power supplyt AC 220 V, 10%
MSZL‑203 Transformer
Oil Interfacial Tension Meter
TECHNICAL PARAMETERS
0.1 mN/m
Measurement range 0-200 mN
Accuracy
Sensitivityt
Resolution
0.1 mN/mt
Unique fast-response electromagnetic force balance sensor improves measurement
accuracy and linearity.
0.1% of reading ± 0.1 mN/mt
MAIN FEATURES
1. Calibration requires only one point, eliminating the need for multiple
calibration points.
2. Real-time display of equivalent tension and current weight.
3. Integrated temperature detection circuitry for automatic temperature
compensation of measurement results.
38
MSSZ‑2006
Insulating Oil Acid Value Tester
TECHNICAL PARAMETERS
Acid value range 0.001 to 1 mg KOH/g
Minimum resolution
Repeatability 0.002 mg KOH/g
Three-cup and six-cup integrated design, suitable for testing the acid value of transformer
oil and turbine oil.
0.001 mg KOH/g
MAIN FEATURES
1. Automatically completes extractant addition, neutralization
titration, endpoint determination, and acid value calculation.
2. No need to prepare extractant, neutralization solution, or other
working solutions.
3. Average oil sample testing time is approximately 2 minutes.
4. Automatic standard acid calibration minimizes system errors.
5. Large-capacity, high-efficiency carbon dioxide and water
purification system.
6. Guaranteed neutralization solution concentration stability.
YJJ‑II Insulating Oil
Dielectric Strength (BDV) Tester
TECHNICAL PARAMETERS
0-80 kV (0-100 kV customizable) Single-cup
MAIN FEATURES
1.Automatically performs voltage boosting, holding, stirring, settling, and calculations
Features data storage and printout functions
2.Power-off memory function automatically saves test results
3.Overvoltage, overcurrent, limit, and ground fault alarms
Waveform conditioning function eliminates harmonic interference that can interfere with accurate
measurements
Output voltage 0-80 kV (0-100 kV customizable)
Voltage distortion rate <2%
Boosting rate 2.0-3.5 kV/s (Δ = 0.5 kV/s)
Booster capacity 1.5 kVA
Measurement accuracy ±(2% + 2 digits)
39
YJJ‑3S Insulating Oil
Dielectric Strength (BDV) Tester
TECHNICAL PARAMETERS
1.5 kVA
Output voltage 0-80 kV (0-100 kV customizable)
Voltage distortion rate
Boosting rate
Booster capacity
2.0-3.5 kV/s (Δ = 0.5 kV/s)
0-80 kV (0-100 kV customizable) Three-Cup Integrated
<2%
MAIN FEATURES
1.Automatically performs voltage boosting, holding, stirring, settling, and calculations
2.Features data storage and printout functions
3.Power-off memory function automatically saves test results
4.Overvoltage, overcurrent, limit, and ground fault alarms
5.Waveform conditioning function eliminates harmonic interference that can interfere with
accurate measurements
Measurement accuracy ±(2% + 2 digits)
MSPH ‑3003
Insulating Oil Acidity Tester
TECHNICAL PARAMETERS
0.1 PH
Measuring range 3.6-7.0 PH
Measurement error
Constant temperature accuracy
Resolution
±2°C
Three-in-one design offers fast measurement cycles and high efficiency.
≤±0.1 PH
MAIN FEATURES
1. Automatically completes heating, constant temperature, oscillation, sampling, testing,
cleaning, and printing.
2. Power-off memory function automatically saves test results.
3. Flexible selection between direct and standard tests for convenient testing.
4. Programmable cleaning function allows for convenient line cleaning.
Power supply AC 220 V, 10%
40
MSBS‑303A
Closed Cup Flash Point Tester
TECHNICAL PARAMETERS
Temperature measurement Room temperature to 300°C
Measurement accuracy
Repeatability 0.5%
Automatically completes the test process꞉ testing, opening the lid, ignition, alarm, cooling,
and printing.
≥110°C ± 2°C, ≤110°C ± 1°C
MAIN FEATURES
1. Platinum heating wire, selectable ignition modes꞉ electric and gas.
2. Power-off memory function automatically saves test results.
3. Automatic atmospheric pressure detection and correction of test results.
4. High-power, high-frequency switching power supply heating technology for high heating efficiency.
5. PID control algorithm automatically adjusts the heating curve. Detection stops and alarms
automatically when the temperature exceeds the specified value.
Resolution 0.1°C
41
MSGK‑E Circuit Breaker Analyzer
TECHNICAL PARAMETERS
Vacuum circuit breaker range꞉ 50.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1
SF6 circuit breaker
Oil circuit breaker range꞉ 1000.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1
Equipped with an industrial computer architecture, it is suitable for all models of SF6
switches with metal contacts, GIS combination switches, vacuum switches, and oil switches
manufactured domestically and internationally.
range꞉ 300.0mm; resolution꞉ 0.1mm; error꞉ ≤1% rdg ±0.1
MAIN FEATURES
1. Accelerometers, rotational speed sensors, and linear travel sensors are extremely
easy and simple to install.
2. Triggering modes꞉ internal, external, sensor, and manual.
3. Energy storage power supply output꞉ An adjustable energy storage power supply
with a maximum starting current of 20A.
TECHNICAL PARAMETERS
Measuring range 50A - 0-10mΩ, 100A - 0-5mΩ
Resolution
The MSHL-100A Micro-Ohmmeter is suitable for high-precision measurement of contact
(loop) resistance of high and low voltage switches and DC resistance of cable lines. It is also
suitable for other applications requiring high current and micro-resistance measurements.
0-99.99μΩ - 0.01μΩ, 100.0-10000.0μΩ - 0.1μΩ
MAIN FEATURES
1. Latest switching power supply technology enables long-term
continuous high current output.
2. Stable readings within ±1 digit even under severe interference
conditions.
3. Highest resolution up to 0.01μΩ.
4. Imported high-performance CPU with automatic range switching
ensures test accuracy.
5. Powerful functions꞉ Optional current selection between 50A and 100A.
42
The MSHL‑100A Micro‑Ohmmeter
HV Switch Test
MS‑208V Vacuum Tester
TECHNICAL PARAMETERS
Test Objects Various types of vacuum switch tubes
Test Method
Scope of Application Multi-purpose unit capable of measuring various types of
vacuum switches
Widely applicable to industries using vacuum switches, such as power, steel, petrochemicals,
textiles, coal, and railways.
Non-disassembly measurement using a new excitation coil
MAIN FEATURES
1. Quantitatively measures the vacuum level within the arc extinguishing chamber of
various vacuum switch models.
2. No need to disassemble the vacuum switch for on-site measurement.
3. Accurate and reliable test results.
4. Simple and convenient operation.
Measuring Ranget 10-5 to 10-1 Pa
43
It can calibrate various relays (such as current, voltage, inverse time, power direction,
impedance, differential, low-frequency, synchronous, frequency, DC, intermediate, and
time) and microcomputer protection devices. It can also simulate a variety of complex
transient, permanent, and switching faults to conduct complete tests.Accuracy
MAIN FEATURES
1. Features 4-phase voltage and 3-phase current outputs, enabling convenient output combinations
for various types of protection tests.
2. Each phase can output 120V voltage, and all three phases can output 120A current.
3. The fourth phase voltage, Ux, is a multi-function voltage setting.
4. Outputs can be set to four different values꞉ 3U0, sync check voltage, or any other voltage value.
(Three-Phase Single-Chip Computer, Class 0.2 Accuracy) (Three-Phase Industrial Computer, Class 0.2 Accuracy)
MS‑702C/802C Relay Protection Tester
MS‑1200C Six‑phase Relay Protection Tester
TECHNICAL PARAMETERS
AC current output 6 channels, 30A/450VA each, 180A in six-phase parallel connectiont
AC voltage output
Output accuracy 0.2% (within the main range)
(Six-phase, Class 0.2 Accuracy)
6 channels, 120V/80VA each, 240V line voltage
MAIN FEATURES
1. Outputs up to 6 voltage and 6 current phases, which can be combined to achieve conventional 4-phase
voltage and 3-phase current modes.
2. 6-phase voltage, 6-phase current, and 12-phase output modes are compatible with various traditional
test methods.
It can calibrate various relays (current, voltage, inverse time, power direction, impedance,
differential, low-frequency, synchronous, frequency, DC, intermediate, and time) and microcomputer
protection systems. It can also simulate a variety of complex transient, permanent, and switching faults
for complete testing.
DC current output 3 channels, ±10A/200VA each
DC voltage output
Output accuracy 0.5% (within the main range)
3 channels, ±160V/70VA each
44
Secondary Injection Relay Tester
MS‑601G CT/PT Transformer
Comprehensive Tester
TECHNICAL PARAMETERS
Output 0-180Vrms, 12Arms, 36A (peak)
CT ratio measurement range
PT ratio measurement range 1-40000, accuracy꞉ ±0.2%
Test Applications꞉ Protection CTs and Pts
1-40000, accuracy꞉ ±0.2%
MAIN FEATURES
1. Meets the requirements for testing the excitation characteristics (i.e., volt-ampere characteristics), turns ratio,
polarity, secondary winding resistance, secondary load, ratio difference, and angular difference of various CTs (e.g.,
protection, metering, and TP).
2. Tests the excitation characteristics, turns ratio, polarity, secondary winding resistance, ratio difference, and
angular difference of the electromagnetic units of various Pts.
3. Automatically generates knee point voltage/current and 10% (5%) error curves.
4. Low-frequency testing principle, capable of testing CTs with knee points up to 45kV.
5. One-click CT DC resistance, excitation, ratio, and polarity testing.
Phase measurement꞉ accuracy ±5min, resolution꞉ 0.5min
CT PT Analyzer
MS‑601D CT/PT Analyzer
TECHNICAL PARAMETERS
CT (Protection, Metering) PT
Volt-ampere characteristic (excitation characteristic) curve Volt-ampere characteristic (excitation characteristic) curve
Automatic inflection point value Automatic inflection point value
Automatic 5% and 10% error curves Turns ratio measurement
Transformation ratio measurement Polarity determination
Ratio difference measurement Ratio difference measurement
Phase (angle difference) measurement Phase (angle difference) measurement
Polarity determination AC withstand voltage test
Primary current test Secondary load test
AC withstand voltage test Secondary winding test
Secondary load test Core demagnetization
Secondary winding test
Core demagnetization
45
Battery Testing Series
MS‑3982 Battery Discharge Tester
TECHNICAL PARAMETERS
DC110V, 220V, 88-264V, 100A
MAIN FEATURES
When the battery is offline, it acts as a discharge load, continuously regulating the discharge current to achieve
a set constant current discharge. During discharge, the instrument automatically stops discharging when the battery
pack terminal voltage or cell voltage drops to the set lower limit, when the set discharge time or discharge capacity
is reached, and records all valuable, continuous, real-time process data.
Discharge voltage DC88V-264V
Discharge current 0-100A
Operating mode
Standalone mode, parallel master mode,
parallel slave mode, remote control mode
Cell voltage acquisition
Multi-band RF wireless module, communication distance
can reach more than 100 meters, compatible with
2V/4V/6V/12V single battery voltage monitoring, 1 to 25
groups of RF wireless monitoring modules, can monitor up
to 300 batteries, a single wireless monitoring module can
monitor 12 single batteries
MS‑3985 Battery Charge
And Discharge Tester Load Group
TECHNICAL PARAMETERS
220V, 40A Charge
100A Discharge
MAIN FEATURES
This product integrates constant current discharge, intelligent charging, cell monitoring, and activation.
1. DC 220V charge and discharge function
2. Constant current discharge function for battery packs
3. Intelligent charging function for battery packs
4. Activation function
Charge voltage DC190V-300V
Charge current
Discharge voltage DC176V-270V
0-40A
Discharge current 0-100A
Current accuracy
Voltage accuracy 0.5%
1%
46
MS‑3986 Load Capacity Battery Tester
TECHNICAL PARAMETERS
DC 48V/110V/220V Charge 40A Discharge 50A
MAIN FEATURES
When the battery is offline, the instrument acts as a discharge load, continuously controlling the discharge current
to achieve a set constant current discharge. During discharge, the instrument automatically stops discharging when
the battery pack terminal voltage or cell voltage drops to the set lower limit, when the set discharge time or capacity
is reached, and records all valuable, continuous, real-time process data.
1. DC 220V charge and discharge function꞉
2. High-precision resistors are used to avoid red-heating.
3. The cell monitoring module uses long-distance RF wireless communication to transmit voltage data.
4. The wireless data acquisition box monitors each battery cell.
5. Data is transmitted between the cell monitoring module and the main unit of the charge and discharge
instrument.
Charging voltage DC10-300V
Discharging voltage DC10-300V
Charging current 0-40A
Discharging current
Standalone mode, parallel master mode,
parallel slavemode, remote control mode
0-50A
Operating modes
MS‑3006 Battery Internal Resistance Meter
TECHNICAL PARAMETERS
Measures internal resistance and performance evaluation of single-cell batteries, battery
packs, and batteries with connection resistors (optional).
MAIN FEATURES
1. Intelligent, digital design for accurate measurement and simple operation.
2. Weighs less than 0.45 kg and is handheld.
3. Meets various battery internal resistance testing standards.
4. Four-terminal multi-purpose test clip combines the functions of a test clip and a probe.
Internal resistance 0.0mΩ to 120mΩ
Voltage 0.000V to 25V
Connection resistance
measurement range 0.0mΩ to 65.0mΩ
Minimum measurement Internal resistance 0.001mΩ
47




