GKC433DR Switchgear Analyzer(Dynamic resistance test)

Circuit breaker Testing




GKC433DR Switchgear Analyzer (Dynamic Resistance test)

INTRODUCTION
The circuit breaker contact system consists of main and arcing contacts. One of the methods to assess the condition of arcing contacts is to inject high direct current (DC) through the circuit breaker contacts and measure the voltage drop during the breaker operation – a process called Dynamic Resistance Measurement (DRM). It make assess the SF6 circuit breaker arc contact without disassembling the interrupting chamber. HANDY GKC433DR switchgear analyzer with DRM202 dynamic module perform contact dynamic resistance test. The DRM202 sets with rechargeable batteries for pure DC power source. Both dynamic and static resistance can be measured. GKC433DR records the voltage drop, current, contact motion during the breaker operation.

FEATURES
1. GKC433DR is used for testing electrical and mechanical characteristic of high voltage circuit breaker, switch and contactor.
2. Measure the time parameters (close, open, asynchronous, bounce) of 12 main contacts. Measure the co-operate time between 6 main- and 6 auxiliary contacts. 
3. Measure the pre-insert time and resistance of 6 resistor contacts
4. Set with 12 contact state indicator lamps on panel. It is easy to judge close and open state.
5. There are 3 analog input channels and 3 digital input channels. Measure the travel, over-travel, rebound, overshoot and speed of the breaker by using resistance transducer or digital transducer.
6. Use digital rotary transducer for measuring angle.
7. Operate Close, Open, O-C-O, O-C, C-O control sequences.
8. Test the mechanical characteristic operated by CB manually.
9. Create and store 50 speed definitions of circuit breakers.
10. Built-in DC control output, can used for action voltage testing.
11. Built-in DC output for motor driving.
12. Measure the motor current curve while motor driving.
13. Measure the dynamic contact resistance at close, open, C-O operate sequence, and draw the dynamic resistance curve.
14. Use IGBT electrical switch for control outputs, with high precision and long life age.
15. Built-in DC/AC current sensor for measuring close and open control current.
16. Can store 60 test results in memory. Loss of power without loss of data.
17. The stored data can be transferred to USB disk.
18. Use the USB disk to update the tester software.
19. LCD displays the operation interface, test data, contacts, travel and current curves.
20. Thermal printer can print test result fast, include contacts, travel, and current curves.
21. Max 1000 times action testing automatically.
22. Use an USB cable connecting to Windows PC to operation.
23. Open and analyze data on PC, generate report and print A4 report.
24. Chinese and English interface selectable.
 
SPECIFICATIONS
 
 Contact inputs and Time Measurement
 Main contact channels: 12
 Auxiliary contact channels: 6
 Resistor contact channels: 6
 Measurement time range: 0 to 20s
 Accuracy: ±0.05% rdg ± 0.1ms  
 Resolution:  0.1ms
 Sample rate: 10kHz to 100 kHz
 Resistive contact range: 50 to 2000Ω
 Accuracy: ±1% rdg± 1 Ω    Resolution: 1Ω
 Motion Measurement
 Stroke measurement
 Accuracy: ±0.5% rdg ±0.2mm  
 Resolution: 0.1mm
Speed range: 0 to 20m/s     Resolution: 0.01m/s
 Analog section:
 3 channels
 Transducer input range: 0 to 5V
 Transducer resistance: 50Ω to 5kΩ
 Digital section:
 3 channels
 Incremental transducer with RS422
 Accuracy of angle: ±0.1°  Resolution: 0.05°
Current Measurement
 Coil current measurement: 0 to 30A (AC / DC)  Resolution: 1mA
Motor current measurement: 0 to 40A (AC / DC)  Resolution: 1mA
 
 Control Section
 Control output capacity: 300V/ 30A (AC / DC)
 Dynamic resistance measurement
 Range: 0 - 400μΩ - 4000μΩ - 8000μΩ
 Accuracy: ±2% rdg ± 2μΩ
 Current output: 150A - 200A.  
 Opening  voltage:2.5V
 Built-in DC Power Source
 DC power supply: 0 to 270V/ 20A,  Power: 4kW
Voltage measurement: 0 to 300V   Accuracy: ± 0.5% rdg ± 1V
 General
 Power supply: 198 to 264V AC  47 to 63Hz
 Environment：-20 to 50℃  
Humidity ≤90%RH   Non-condensing
 Weight：12kg   Dimension：492×392 ×218mm