Representative Models and Manufacturers (2026 Reference)
A. Comprehensive/High-end Laboratory Use
Wuhan MOEORW - MEKG-8000 Series
Features: 12-channel break input, built-in 300V/20A power supply, supports GPS synchronization, equipped with universal sensors, suitable for testing ultra-high voltage circuit breakers of 500kV and above.
Wuhan Huatian Electric Power - HTGK-9000
Features: Large color screen, built-in printer, powerful waveform analysis functions, supports custom definition of "just opening/just closing" speed (e.g., first 10mm or last 10mm).
Yangzhou Haiwo Electric - HWKG-III
Features: Lightweight design but with full functionality, especially suitable for on-site mobile operations, sensor installation is extremely convenient.
B. Portable/On-site Inspection Use
Guodian Xigao - GDKG-808
Features: Small size, light weight (<5kg), long battery life, suitable for rapid survey of 10kV-35kV switches in distribution networks.
Shanghai Sute - STKG-V
Features: High cost performance, simple operation interface, focuses on basic time and speed testing, suitable for grassroots teams.
4. Purchase and Application Recommendations
Voltage Level Matching:
10kV-35kV: Choose portable type, 6-8 channels are sufficient, focus on the convenience of sensor installation.
110kV-500kV: Must choose high-end desktop or reinforced portable machines, need more than 12 channels (to handle multiple breaks), and the built-in power supply should have high power (to drive large hydraulic/spring mechanisms).
The electrical characteristic control console (commonly known as high voltage switch characteristic tester, circuit breaker mechanical characteristic test bench, or switch dynamic characteristic analyzer) is core equipment in the power system used to detect the mechanical performance and electrical characteristics of high voltage circuit breakers (such as vacuum circuit breakers, SF6 circuit breakers, oil circuit breakers) and disconnectors.
Its main function is to ensure that the switchgear operates accurately during opening and closing, with proper speed and time synchronization, preventing refusal to operate, misoperation, or explosion accidents caused by mechanical jamming, excessive speed, or desynchronization.
Combined with the latest technical standards and market products from 2025-2026, here is a detailed analysis:
1. Core Testing Functions
Modern electrical characteristic control consoles integrate high-precision sensors and high-speed data acquisition systems, mainly testing the following key parameters:
Time Parameters:
Opening/Closing Time: Time from coil energization to contact separation/contact.
Three-phase Desynchronization: Time difference of three-phase contact operation (key indicator, usually required to be <2ms).
Same-phase Break Desynchronization: Internal synchronization of double-break or multi-break circuit breakers.
Bounce Time and Count: Duration and count of contact rebound during closing (especially critical for vacuum circuit breakers).
Speed Parameters:
Just Opening/Just Closing Speed: Speed at the moment of contact separation/contact.
Maximum Speed: Peak speed during movement.
Average Speed: Average speed over a specific travel distance.
Speed Curves: Real-time plotting of "travel - time", "speed - time", and "acceleration - time" curves.
Travel Parameters:
Total travel, overtravel (contact travel), and open distance.
Operating Mechanism Testing:
Opening/Closing Coil Current Waveform: Analyze whether the coil is short-circuited, open-circuited, or jammed.
Operating Voltage: Test low voltage operation characteristics (e.g., operation at 30%, 65%, 85% of rated voltage).
Special Functions:
Reclosing Test: Simulate complex operation sequences such as "open-close-open" or "close-open".
Energy Storage Motor Test: Monitor motor starting current and energy storage time.
Sensor Compatibility: Confirm whether the instrument is equipped with universal sensors (linear + rotary), which can solve the problem of difficulty in installing sensors on old models or special structure circuit breakers.
Power Output Capability: Check the current output capability of the built-in power supply. Old electromagnetic mechanisms require large starting currents (>10A). If the instrument's load capacity is insufficient, it can lead to test failure or inaccurate data.
Software Functions: Prioritize instruments that support waveform comparison analysis, allowing overlay comparison of current test waveforms with historical data or standard waveforms to quickly identify hidden dangers.
Standard Compliance: Ensure compliance with the latest standards such as GB/T 11022, DL/T 846.3, etc.
5. Market Price Reference
Basic Portable Type (6 channels, simple sensors): Approximately 12,000 - 25,000 RMB.
Standard Professional Type (12 channels, universal sensors, built-in high-power supply): Approximately 25,000 - 45,000 RMB.
High-end Intelligent Type (16+ channels, GPS synchronization, AI diagnostics, ultra-high sampling rate): Approximately 50,000 - 80,000 RMB.
6. Testing Precautions
Safety First: Before testing, confirm that there is no voltage on both sides of the circuit breaker, and disconnect the control circuit protection pressure plate to prevent accidental tripping of other equipment in operation.
Sensor Installation: The sensor fixation must be firm to avoid sliding during high-speed movement causing data distortion (this is the most common source of error).
Grounding: The instrument casing and circuit breaker base must be reliably grounded to prevent induced electricity from damaging the instrument or causing injury.
Anti-back-charging: For mechanisms with capacitor energy storage, pay attention to discharge after testing to prevent residual charge from causing injury.
If you need testing solutions for specific brands (such as ABB, Siemens, Pinggao, XD) of circuit breakers, or need to query the specific wiring diagram of a certain instrument, please feel free to let me know!
