MUSEN

POWER TEST EQUIPMENTMANUAL

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

CONTENT

01 Ac Withstand Voltage Equipment 03
02 Transformer Test 17
03 High Voltage Test Series 19
04 Transformer Test 26
05 SF6 Gas Measurement And Detector 32
06 Insulating Oil Test Equipment 36
07 HV Switch Test 42
08 Secondary Injection Relay Tester 43
09 CT PT Analyzer 45
10 Battery Testing Series 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.

米+

米十X

Company Profile

Quality You See. Service You Feel. Integrity You Trust. Brand You Choose

Wuhan Musen ElectricCo., Ltd., established in 1996, is located in the Wuhan East Lake New Technology Development Zone (Wuhan OpticsValley), enjoying convenient transportation. As an OEM/ODM manufacturer with 30 years of experience, we specialize in the research, development, manufacturing, sales, andservice 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 partialdischarge 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 recognizedand 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.

MS-GTU GIS Pressure Test Chamber

SCOPE OF APPLICATION

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.

TECHNICAL PARAMETERS

Rated capacity

50-2000kVA

Impedance voltage

≤5%

100kV、200kV、250kV、300kV

Output voltage

500kV、750kV、1000kV、1200kV

Temperature rise

≤65K

Runtime

≤5min

MAIN FEATURES

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

MS-GTU Variable Frequency NO PD Withstand Voltage Test System

SCOPE OF APPLICATION

145kV power system GIS non-partial discharge Ac withstand voltage test, applicable to test productmaximum capacitance s 0.0001jF/bay (based on 3 bays + 9m GIS internal busbar s 0.001uF) and testproduct total capacitance < 0.004uF, test frequency 100Hz, maximum test voltage 235kV.

TECHNICAL PARAMETERS

Output power

50kW

Input voltage

Frequency adjustment range

380V+10% three-phase; 50Hz

Frequency Resolution

Output waveform

Single-phase 0\~350V

Partial discharge

MAIN FEATURES

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.

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)

Workshop equipment site
600kV SF6 gas non-partial discharge test transformer (bushing)

MS-YDQW Integrated Sf6 Gas No Partial Discharge Test Transformer(bushing)

MUSEN

nall footprint, less on-site wiring fear of bumpy transportation

SCOPE OF APPLICATION

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. It also features a user-friendly interface and data display function, making it easy for users toperform test operations and view results.

TECHNICAL PARAMETERS

MS-YDOW Sf6 Gas No PD Test Transformer (bushing)

MUSEN

SCOPE OF APPLICATION

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, mutuainductors, insulation materials and related high-voltage components, as well as high-voltagetest laboratories in power, scientific research and colleges and universities. It can performpartial discharge and power frequency withstand volt-... tests on their products.

TECHNICAL PARAMETERS

Rated capacity

50-1200kVA

accuracy

≤1.5%

Input voltage

380V

Partial discharge

≤5Pc

Output voltage

50-1200kV

Protection function

Overcurrent and voltage protection alarms automatically return to zero

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.

MS-YDJW No PD Test Transformer

SCOPE OF APPLICATION

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.

TECHNICAL PARAMETERS

Rated capacity

50-1200 kVA (customizable)

Partial Discharge

<5 PC

Output Voltage

AC 50-1200 kV, including 50, 100, 150, 200, 250, 300, 500, and 1000 kV

Transformation Ratio Accuracy

<1.5%

Protection

Overcurrent and voltage protection alarms with automatic reset

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 anti-

interference capabilities;

6. Utilizes fast electronic protection devices for high reliability.

MSWJXZ No Partial Discharge Induction Voltage Withstand Resonance Test System

SCOPE OF APPLICATION

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.

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.

750kV AC Withstand Voltage Test Platform

Multiple specifications: 500kV, 750kV, and 1000kV integrated AC auxiliary voltage test platform.

TECHNICAL PARAMETERS

Rated Voltage

750kV

Resonant Reactor

Rated Inductance 435H

Rated Current

6A

Operating Frequency

30-300Hz

Rated Output Power

4500kVA

Rated Capacitance

8000pF

Duty

≥30min

Hydraulic System

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.

MS-CZ Vehicle-mounted High-pressure Inflatable No partial Discharge Combined Test Device

TECHNICAL PARAMETERS

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.

MS-CZWJ Vehicle-mounted No PD Withstand Voltage Test System

TECHNICAL PARAMETERS

Voltage Levels

100kV, 200kV, 250kV, 300kV, 500kV, 800kV, 1000kV

Capacity

50-2000kVA

Input Voltage

0.35-10kV (primary voltage)

Partial Discharge

1-3pc at rated voltage (normal environment)

Temperature Rise

No more than 65kV (50Hz) after 60 minutes of operation at rated current

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

MAIN FEATURES

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.

MSXB-FSeriesVariable Frequency Series Resonant Device

Applicable to 10-220kV substation equipment and cable AC withstand voltage test Common specifications (kVA/kV): 135/108、270/108、270/270、540/270、1620/540、400/800、8100/500

MSXZ(f)-1620kVA/540kV Variable Frequency Series Resonance

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

Variable Frequency Series Resonant System

Suitable for acceptance and preventive testing of high-capacity, high-voltage electrical equipment.

The variable frequency series resonant test device utilizes brand-new, innovative technology to perform various tests, reducing the required power capacity and overcoming the limitation of traditional resonant testing, which can only satisfy the working time requirements of a single cable for 3 hours. The patented technology design ensures continuous withstand voltage testing for multiple cables at the engineering site.

To meet the requirements of different voltage levels for testing, the reactor is designed with multiple separate units that can be combined as needed for various test scenarios.

耐高温

散热性好

连续使用

性能稳定

MSXZ(f)-75kVA/75kV Variable frequency series resonance

Products can be customized according to testing requirements, meeting any parameter configuration needs.

AC withstand voltage test for 10kV/300mm²1.5km cables AC withstand voltage test for 35kV main transformers

Product Configuration
Excitation transformer: 6kVA/1.5/6kV/0.4kV, 1 unit
Frequency converter power supply: 6kW/220/380V, 1 unit
High-voltage reactor: 25kVA/25kV, 3 units
Capacitive voltage divider: 80kV/1000pF, 1 unit
Internal connecting cables: 1 set
AC withstand voltage test for 35kV/300mm², 0.6km long cables
AC withstand voltage test for 35kV switches and current
transformers
AC withstand voltage test for the neutral point of
110kV/40000kVA main transformer

MSXZ(f)-108kVA/108kV Variable frequency series resonance

Product Configuration Excitation transformer: 6kVA/1.5/6kV/0.4kV,1 unit Variable frequency power supply: 6kW/220/380V, 1 unit High-voltage reactor: 27kVA/27kV, 4 units Capacitive voltage divider: 110kV/1000pF, 1 unit Compensation capacitor: 70kV/10000pF, 1 unit

MSXZ(f)-135kVA/108kV Variable frequency series resonance

Scope of Application

AC withstand voltage test for 1km of 35kV/300mm² cable AC withstand voltage test for 35kV main transformer AC withstand voltage test for 35kV switches and instrument transformers

Product Configuration

Excitation Transformer: 7.5kVA/1.5/6kV/0.4kV(1unit) Variable Frequency Power Supply: 7.5kW/220/380V(1unit) High-Voltage Reactor: 33.75kVA/27kV(4unit) Capacitive Voltage Divider: 110kV/1000pF(1unit) Compensation Capacitor: 70kV/10000pF(1unit)

MSXZ(f)-540kVA/270kV Variable frequency series resonance

Scope of Application

AC withstand voltage test for 110kV GIS and switches
AC withstand voltage test for 0.7km of 110kV/400mm² cable
AC withstand voltage test for fully insulated
110kVA/80000kVA main transformer
Product Configuration
Excitation Transformer: 15kVA/4/8/16kV/0.4kV (2 units)
Variable Frequency Power Supply: 30kW/220/380V (1 unit)
High-Voltage Reactor: 54kVA/27kV (10 units)
Capacitive Voltage Divider: 270kV/500pF (2 units)
Compensation Capacitor: 160kV/5000pF (2 units)

MSXZ(f)-270kVA/270kV Variable frequency series resonance

MSXZ(f)-1000kVA/500kV Variable frequency series resonance

Scope of Application

220kV/300mm² 0.5km,110kV/630mm²1km
35kV/630mm² 2km AC withstand voltage test for cables
AC withstand voltage test for 220kV main transformer neutral point and 110kV main transformer line terminal
AC withstand voltage test for 220kV and below circuit breakers, PTs, CTs, insulators, GIS, etc.
Product Configuration
Frequency converter power supply: 45kW/0.4kV (1 unit)
Excitation transformer: 20VA/4/8/25kV/0.4kV (2 units)
High-voltage resonant reactor: 100kVA/50kV (10 units)
Capacitive voltage divider: 500kV/1000pF (1 unit)
Compensation capacitor: 160kV/5000pF (1 unit)

• 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

MSXB-F-4000kVA/800kV High Voltage Series Resonance Test Device

MSXZ(f)-8100kVA/500kV variable frequency series resonant transformer

SCOPE OF APPLICATION

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

MS-101G Series High Voltage Dielectric loss Tester

Upgrade 8 major functions to fully meet test reguirements

MUSEN

Simultaneous forward and reverse measurement

Four-channel simultaneous measurement

CVT ratio polarity

CVT self-excitation method

● LCR measurement

Bluetooth and data transmission

SCOPE OF APPLICATION

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 anddual-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.

TECHNICAL PARAMETERS

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

YDQ/YDJZ/GTB AC/DC Voltage Withstand Tester

SCOPE OF APPLICATION

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

Fully automatic

Manual
Fully automatic
MUSEN

Manual

Gas-filled transformers

Oil-immersed transformers

Dry-type transformers

TECHNICAL PARAMETERS

MSVLF-80kV/1.1uF Ultra-Low-Frequency 0.1Hz Test Device

TECHNICAL PARAMETERS

MAIN FEATURES

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-101G UItra-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

ZGS-80kV 300mA Water-cooled Generator DC Withstand Voltage Test Equipment

Designed for leakage current and DC withstand voltage tests of water-cooled generators

TECHNICAL PARAMETERS

MAIN FEATURES

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.

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.

MAIN FEATURES

1. Insulation resistance range: 10TΩ @ 10kV, with an adjustable short-circuit current up to 10mA.

2. Automatically displays polarization index (Pl) 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 cables, manual discharge is unnecessary; the instrument automatically discharges quickly

ZGF Series DC High Voltage Generator

Integrated

SCOPE OF APPLICATION

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.

TECHNICAL PARAMETERS

MSDDG Series High Current Generator

MUSEN

MUSEN

SCOPE OF APPLICATION

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.

TECHNICAL PARAMETERS

YDQ[W)/YDJZ(W) Non-partial Discharge Power Frequency Withstand Voltage Test Device

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 alen features a comnreheneive ranae of innut unite (detection impedance) and offers nine frequency ectly read the discharge capacity of a discharge

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

MSJF-3001B Ultrasonic Partial Discharge Tester

MUSEN

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.

MSBR-II Transformer Winding Deformation Tester

internal structural fault detection of 63kV\~500kV power transformers

TECHNICAL PARAMETERS

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.

MAIN FEATURES

1. Automatically performs waveform distortion and temperature correction.

2.Measures three-phase voltage/current, average 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.

TECHNICAL PARAMETERS

0-750V (wide range)

MS-103 Transformer Short Circuit Impedance Test System

Capable of measuring transformer short-circuit impedance, short-circuit reactance, short-circuit resistance, and three-phase impedance voltage.

TECHNICAL PARAMETERS

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.

MAIN FEATURES

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, transform short-circuit protection, and inter-turn short-circuit protection

6. AC and DC power supply options to meet diverse site requirem

TECHNICAL PARAMETERS

MS-100ES Handheld Three-Phase Transformer Turns Ratio Tester

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.

TECHNICAL PARAMETERS

MAIN FEATURES

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

MS-100B(E) Transformer Turns Ratio Testing Equipment

TECHNICAL PARAMETERS

MAIN FEATURES

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.

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

MS-510S2Three-Channel Winding DC Resistance Tester

This device integrates magnetizing method testing, three-phase testing (Yn, Y, ∆), and demagnetization functions. It completes all DC resistance tests with a single connection, offering fast testing speed.

MAIN FEATURES

1. Three-phase measurement method, calculation of three-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

Output Current

MS-520S Three-channel DC Resistance Tester

Integrates three-phase testing, magnetizing, and demagnetizing functions.

TECHNICAL PARAMETERS

Three-phase test

20A+20A;10A+10A;5A+5A;1A+1A;
200mA+200mA;20mA+20mA;

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)

Accuracy

0.2%±2μΩ

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

MS-401 SF6 Gas Density Relay Calibrator

Measures the alarm value, latch value, alarm return value, and latch return value of { \mathsf { S F } } _ { 6 } gas density relays. Both single latch and double latch measurements are available. The instrument also features normal temperature pressure gauge calibration and 2 0 ^ { \circ } { C } pressure gauge calibration.

TECHNICAL PARAMETERS

MUSEN

MS-403 SF6 Gas Leak Detector

Performs qualitative and quantitative leak detection in { \mathsf { S F } } _ { 6 } electrical equipment.

TECHNICAL PARAMETERS

MAIN FEATURES

1. Accurately locates leak points in { \mathsf { S F } } _ { 6 } gas-filled electrical equipment.

2.Displays multiple parameters simultaneously, including { \mathsf { S F } } _ { 6 } concentration, temperature and humidity, battery indicator, time, and diaphragm pump status.

3.Utilizes non-dispersive infrared (NDIR) technology and a German-made sensor.

MS-405 SF6 Trace Moisture Tester

Integrates three-phase testing, magnetizing, and demagnetizing functions.

TECHNICAL PARAMETERS

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, \mathsf { C O } _ { 2 } , \mathsf { N } _ { 2 } , \mathsf { H } _ { 2 } , \mathsf { O } _ { 2 } , \mathsf { S F } _ { 6 } , He, Ar, and other inert gases.

MS-405B SF6 Dew Point Analyzer

MUSEN

TECHNICAL PARAMETERS

Dew point measurement range

Dew point accuracy

-60°C to +20°C (at 20°C atmospheric pressure)

Dew point repeatability

±0.1°C to ±0.2°℃

±0.05℃

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.

MS-406 SF6 Purity Tester

TECHNICAL PARAMETERS

MAIN FEATURES

1.The sensor probe can automatically calibrate the zero point, automatica 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

By simultaneously monitoring { \mathsf { S O } } _ { 2 } , { \mathsf { H } } _ { 2 } { \mathsf { S } } , 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

MS-408 SF6 Gas Analyzer

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

SF₆ Gas Purity

Decomposition

Product Parameters

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]
1. Purity Accuracy: ±0.5% FS
2. Repeatability: ±0.5%

H2S:1\~200PPmv SO2:1\~100PPmv CO:1\~500PPmv MS-408 SF₆Gas 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.

TECHNICAL PARAMETERS

MAIN FEATURES

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.

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

MAIN FEATURES

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.

MSQN-601 Transformer Oil Pour Point Automatic Tester

TECHNICAL PARAMETERS

MAIN FEATURES

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.

MSWS-2 KarIFischer Titrator

Constant pressure detection, high accuracy, fast measurement speed, stable and reliable

TECHNICAL PARAMETERS

MAIN FEATURES

MUSEN

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

MSYN-1301 Kinematic Viscometer

Imported sensor and digital PID temperature control technology provide a wide temperature control range and high accuracy.

TECHNICAL PARAMETERS

MAIN FEATURES

MUSEN

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.

MSZL-203 Transformer Oil Interfacial Tension Meter

Unique fast-response electromagnetic force balance sensor improves measurement accuracy and linearity.

TECHNICAL PARAMETERS

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.

MUSEN

MSSZ-2006 Insulating Oil Acid Value Tester

Three-cup and six-cup integrated design, suitable for testing the acid value of transformer oil and turbine oil.

TECHNICAL PARAMETERS

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

0-80 kV (0-100 kV customizable) Single-cup

TECHNICAL PARAMETERS

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

YJJ-3S Insulating Oil Dielectric Strength [BDV) Tester

0-80 kV (0-100 kV customizable) Three-Cup Integrated

TECHNICAL PARAMETERS

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

MSPH-3003 Insulating Oil Acidity Tester

Three-in-one design offers fast measurement cycles and high efficiency.

TECHNICAL PARAMETERS

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.

MSBS-303A Closed Cup Flash Point Tester

Automatically completes the test process: testing, opening the lid, ignition, alarm, cooling, and printing.

TECHNICAL PARAMETERS

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.

MSGK-E Circuit Breaker Analyzer

Equipped with an industrial computer architecture, it is suitable for all models of SF6 switches with metal contacts, GlS combination switches, vacuum switches, and oil switches manufactured domestically and internationally.

TECHNICAL PARAMETERS

Vacuum circuit breaker

range: 50.0mm; resolution: 0.1mm; error: ≤1% rdg ±0.1

SF6 circuit breaker

range: 300.0mm; resolution: 0.1mm; error: ≤1% rdg ±0.1

Oil circuit breaker

range: 1000.0mm; 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.

The MSHL-100A Micro-Ohmmeter

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.

TECHNICAL PARAMETERS

Measuring range

50A- 0-10mΩ, 100A- 0-5mΩ

Resolution

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.

MS-208V Vacuum Tester

Widely applicable to industries using vacuum switches, such as power, steel, petrochemicals, textiles, coal, and railways.

TECHNICAL PARAMETERS

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.

MS-702C/802C Relay Protection Tester

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

(Three-Phase Single-Chip Computer, Class 0.2 Accuracy)

(Three-Phase Industrial Computer, Class 0.2 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.

MS-1200C Six-phase Relay Protection Tester

(Six-phase, Class 0.2 Accuracy)

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.

TECHNICAL PARAMETERS

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.

MS-601G CT/PT Transformer Comprehensive Tester

Test Applications: Protection CTs and Pts

TECHNICAL PARAMETERS

Output

0-180Vrms, 12Arms, 36A(peak)

CT ratio measurement range

1-40000, accuracy: ±0.2%

PT ratio measurement range

1-40000, accuracy: ±0.2%

Phase measurement: accuracy

±5min, resolution: 0.5min

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

5. One-click CT DC resistance, excitation, ratio, and polarity testing.

MS-601D CT/PT Analyzer

TECHNICAL PARAMETERS

MS-3982 Battery Discharge Tester

DC110V,220V,88-264V,100A

TECHNICAL PARAMETERS

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.

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

MS-3986 Load Capacity Battery Tester

DC 48V/110V/220V Charge 40A Discharge 50A

TECHNICAL PARAMETERS

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.

MS-3006 Battery Internal Resistance Meter

Measures internal resistance and performance evaluation of single-cell batteries, battery packs, and batteries with connection resistors (optional).

TECHNICAL PARAMETERS

MUSEN

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

MAIN FEATURES

1. Intelligent, digital design for accurate measurement and simple op

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.