High-voltage Circuit Breaker Double-terminal Grounding Action Characteristic Testing System

Product Introduction

MOEORW-W5130D High-Voltage Circuit Breaker Dual-End Grounding Action Characteristic Testing System, designed in accordance with national and power industry standards, is suitable for various high-voltage circuit breakers and related equipment. Featuring multi-type sensor compatibility and multi-parameter synchronous measurement capabilities, it offers user-friendly operation and strong anti-interference performance. The system accurately performs mechanical characteristic testing, low-voltage tests, and other functions, while supporting data storage and export. It provides reliable assurance for the safe operation of power systems.

Product Parameter (specification)

Time measurement
Route 12 Inherent opening (closing) time Different phases within the opening (closing) switch The time difference between phase opening (closing) (1 ~ 99 ms )
Closing (opening) bounce time (number of bounces)
Different testing time range;1 ms to 99 ms, resolution;0.01 ms ; Internal trigger test range;1 ms ~ 999 ms , resolution;0.01 ms . 1000ms ~ 9999ms, resolution;0.1ms ; 10000ms ~ 200000ms , resolution;1ms .
External trigger test range	0.01 ms ~ 200 s
Accuracy within 1000 ms	0.05% ± 0.1ms
Measurement of closing resistance	3 ( 6 ) Circuit inherent opening (closing) time Different phases within the opening (closing) switch Phase-to-phase disconnection (closing) Closing resistor connection time and resistance value
Measurement range	30 ～ 10000 Ω, resolution;0.1Ω , accuracy;≤ 1 % ± 2 digits
Graphite contact measurement	3/6- channel inherent tripping (closing) time (optional) Different phases within the opening (closing) switch Phase-to-phase disconnection (closing) Measuring current;10A
Measurement of double-ended grounding switch	3 (6) Circuit inherent opening (closing) time Different phases within the opening (closing) switch Closing (opening) bounce time and waveform
Dynamic resistance measurement	1 channel, current 200A, measurement range;-50 mΩ , accuracy;≤ 0.5% ± 0.5 uΩ .
Velocity Measurement	Velocity at instantaneous separation (or instantaneous engagement) Average speed over a specified time period (travel segment or angle segment)
Speed measurement range	0.01～ 20.00m /s for 0.1mm sensor. 345° angle sensor, 0.01～ 20.00m /s. Laser sensor range;0.01–15.00 m /s .
Stroke Measurement	Moving Contact Stroke ( 3-channel stroke measurement optional) Contact travel (opening distance) Over-trip Overshoot or rebound
Measurement range	Linear sensor;50mm, Measurement range;0-50mm, Resolution;0.1mm . Rotary sensor;345 ^°, measuring range;0-1000mm, resolution;0.08 ° ^.This sensor has a 15-degree ineffective zone. During installation, the effective area of the sensor should be visible on the instrument, and the reading should ideally be around 160-200 degrees. Accelerometer measurement range;0-300mm, resolution;0.1mm . (Optional) Coil current measurement range;maximum current 30 A , resolution;0.01 A. Coil resistance measurement range;0 ~ 2000Ω , resolution;0.01Ω. Instrument power supply;AC 220V ± 10% ; 50Hz ± 2 %
DC power supply	DC6 ~ 270 V continuously adjustable, DC24V≤15A (short time), DC220V≤20A ( short time) .
External trigger voltage	AC/DC 10-300V, current ≤120A
Measurement range of disconnecting switch	(1) Voltage output;DC 6 ～ 270V (adjustable); (2) Power output time;0.01-20 seconds (adjustable); (3) The maximum acquisition time for the break point signal is 200 seconds ; (4) It can measure the closing and opening time of the circuit breaker, the three-phase asynchrony, the bounce time and number of times.
Main unit dimensions	380×280×170mm
Operating environment	-30 ℃ to +50℃ Relative humidity;≤90%

Product feature and application

⑴ This instrument is an embedded industrial control computer featuring a Cortex™-A8-based motherboard with a 1GHz clock speed and 1GB flash memory, booting up in just 16 seconds. Its 9-inch color display runs Windows OS with an intuitive, user-friendly interface. The touchscreen supports both Chinese and English input, facilitating on-site operation.

⑵ Equipped with a high-speed thermal printer for convenient on-site printing of test data.

⑶. Integrated operating power supply eliminates the need for an external secondary power source, ensuring convenient and efficient operation. It provides an adjustable DC power supply ranging from 6V to 270V with a current of 20A. The operating voltage for both closing and opening coils can be freely set, and it can perform low-voltage operation tests on circuit breakers.

⑷ Equipped with linear sensors, rotary sensors, universal sensors, laser sensors (optional), mounting brackets, and specialized multi-functional connectors for extremely convenient and straightforward installation.

⑸ Applicable to all models of SF6 switches, GIS assemblies, vacuum switches, and oil switches manufactured domestically and internationally.

⑹. Obtains all data and graphs with a single switch operation. Test data and graphs display simultaneously on the screen. Speed can be recalculated without retesting. Displays various switch/circuit breaker curves: closing travel curve; opening travel curve; close-open travel curve; open-close-open travel curve; coil current curve; motor energy storage curve; time curve. Performs numerical and graphical curve analysis.

⑺ The main unit stores 30,000 sets of test data (expandable via memory card) with an internal real-time clock for convenient archiving.

⑻ Equipped with 2 USB ports for mouse operation, direct data saving to USB drives, and uploading to computers for analysis/storage. Optional RS232 interface for network operation and optional WiFi operation.

⑼. Simultaneously measures: 12 metal contact break points, 6 main break points and 6 auxiliary break points, 3/6 closing resistances, 3/6 graphite contact tests, 3/6 dual-end grounding (3-channel or 6-channel optional), 1 dynamic resistance channel, and 1 speed channel (3-speed channels optional). Measures circuit breaker travel, overtravel, rebound, and overshoot.

⑽. Incorporates envelope analysis: generates standard envelopes using built-in circuit breaker reference data for comparative analysis, and performs switch vibration frequency analysis.

⑾. Internal anti-interference circuitry ensures reliable operation within 500kV substations.

⑿. Dual-end grounding function employs high-frequency measurement clamps utilizing unique frequency conversion technology. Operating at frequencies exceeding 10kHz (with phase-specific frequencies) and currents up to 1A, it precisely measures circuit breaker closing/opening times, bounce duration, and bounce frequency.

⒀. Loop and dynamic resistance measurements utilize 200A high-current and high-precision displacement sensors to measure static and dynamic resistance of circuit breakers, analyzing arc contact conditions.

Prodection details

Suitable for various high-voltage circuit breakers (including low-oil, multi-oil, vacuum, SF6, GIS integrated units, etc.) and disconnect switches in power systems, as well as earthing switches. It can perform mechanical characteristic parameter testing, low-voltage tests, dynamic resistance measurements, and more in scenarios such as substations (including 500kV level) and power maintenance sites, meeting equipment operation and maintenance as well as performance verification requirements.

Company Qualifications

FAQ

1)What are the characteristics of the operating power supply for the MOEORW-W5130D High-Voltage Circuit Breaker Dual-End Grounding Action Characteristic Testing System?

Answer: This instrument incorporates an integrated operating power supply, eliminating the need for an external secondary power source on-site for convenient operation. It provides a continuously adjustable DC power supply ranging from 6V to 270V, with DC24V ≤ 15A (short-term) and DC220V ≤ 20A (short-term). It allows arbitrary setting of the operating voltage values for both the closing and opening coils, and can also perform low-voltage operation tests on circuit breakers.

2)What triggering methods does the MOEORW-W5130D High-Voltage Circuit Breaker Dual-End Grounding Action Characteristic Testing System support? What scenarios are they respectively applicable to?

Answer: It supports three triggering methods: internal triggering, external triggering, and manual triggering.
Internal Trigger: The instrument outputs an adjustable DC power supply (6–270V, default 220V), suitable for conventional circuit breaker operations driven by the instrument.
External Trigger: Does not use the instrument's internal power supply; instead, it acquires the voltage signal from the circuit breaker's closing/opening coil (AC/DC compatible). Suitable for AC circuit breakers, permanent magnet circuit breakers, or circuit breakers with large coil currents that cannot be driven by the instrument.
Manual Triggering: Requires no control wiring. After extending the signal acquisition time, manual operation completes the closing/opening. Suitable for temporary rapid testing scenarios requiring completion within 5 seconds.

3)When using the MOEORW-W5130D High-Voltage Circuit Breaker Dual-Terminal Grounding Action Characteristic Testing System, what is the correct sequence for on-site grounding? Why must this sequence be followed?

Answer: The correct sequence is to ground the circuit breaker first, then connect other contact test leads. After testing, remove contact test leads and sensors first, followed by the grounding wire last. Reason: During field testing, especially for high-voltage switches above 220kV, contact points may carry thousands of volts of induced voltage to ground. Though low in energy, this poses a potential threat to instrument safety. Internal discharge circuits connect the switch signal input terminals to ground. Grounding the lead first prioritizes activating these discharge circuits. Subsequent connection of switch signal leads allows induced high voltage to discharge through the circuit to ground, protecting the instrument's switch channels.

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