CB Test Table
The circuit breaker testing bench is a professional equipment used for detecting and adjusting the mechanical characteristics, electrical performance, and protection functions of circuit breakers. It is widely applied in the fields of power equipment manufacturing, maintenance, and quality inspection.

• Range: AC 0-1000A (some devices support up to 3000A)

• Accuracy: ±2% (standard models), high-precision models可达±0.5%

• Applications: Suitable for circuit breaker opening and closing current testing, short-circuit instantaneous trip verification
  DC Current

• Range: DC 0-300V (instantaneous output current ≤20A)

• Accuracy: ±1% (for precision constant current source models)

• Features: Supports low-voltage operation tests (e.g., 1.13In～1.45In overload testing)
  Voltage Output Parameters
  AC Voltage

• Range: AC 0-5V (low-level signal) to 250V (high-level drive)

• Adjustment accuracy: 0.1%RG (resolution 0.01V)
  DC Voltage

• Range: DC 30-250V (adjustable)

• Applications: Controls circuit breaker opening and closing coils, supports external trigger testing
  Time and Synchronization Measurement
  Time Measurement Range: 0.01ms～2000ms
  Resolution: 0.1ms (standard), high-precision devices可达0.01ms
  Phase Difference: ≤0.1ms (three-phase circuit breaker opening and closing synchronization)
  Bounce Time: Resolution 0.1ms, range 0-50ms
  Environmental Adaptability
  Temperature: -10℃～+40℃ (some models support extended range of -25℃～+50℃)
  Humidity: ≤85%RH (high-protection grade devices可达93%RH)
  Altitude: ≤2000m (capacity reduction required at higher altitudes)
  Safety and Protection Performance
  Insulation Protection

• Insulation resistance: >2MΩ (standard), high-voltage test benches require ≥10MΩ

• Withstand voltage: 1.5kV/1 minute (basic), some devices support 10kV power frequency withstand voltage
  Overcurrent/Short Circuit Protection

• Automatic cutoff threshold: Triggers audio-visual alarm when current exceeds limit (e.g., 120% rated value) or wiring is incorrect
  Additional Functional Parameters
  Sensor Support: Linear sensor (range 50mm, resolution 0.1mm), rotary sensor (angle resolution 0.5°)
  Data Management: Storage capacity ≥3000 sets of data, supports USB export and cloud platform analysis