KJTC-IV High Voltage Switch Mechanical Characteristics Tester
Darui Electric recommends
It is a newly designed special instrument for detecting the mechanical dynamic characteristics of high-voltage circuit breakers. This instrument adopts high-tech technology, integrating computer, printer, measurement interface circuit, operating power supply, etc., making it a new special instrument for high-voltage circuit breaker detection. The tester is equipped with two displacement sensors suitable for different distance and precision tests. The instrument's automatic identification system identifies the selected sensor to complete distance and speed measurement for low-oil, multi-oil, sulfur hexafluoride, and vacuum high-voltage circuit breakers. In the design of the instrument, only one closing (opening) operation is needed to sample and record all data of six break contacts. The measurement results can be displayed with a single key operation, and the measurement data can be printed, including current waveform diagrams of six break contacts and the time characteristic curve of the moving contact of one break. The instrument processes data strictly according to the definitions in the national standards "GB 1984" and "GB 3309".
II.
KJTC-IV High Voltage Switch Mechanical Characteristics Tester Instrument Functions and Features
1. Test Functions
(1) Closing (Opening) Sequence: Measure one to six break contacts simultaneously
(2) Three-phase Non-simultaneity: Measure one to six break contacts simultaneously, ms
(3) Same-phase Non-simultaneity: Measure one to six break contacts simultaneously, ms
(4) Closing (Opening) Time: Measure one to six break contacts simultaneously, ms
(5) Closing (Opening) Bounce Time: Measure one to six break contacts simultaneously, ms
(6) Closing (Opening) Speed: Measure one break contact, m/s
(7) Maximum Closing (Opening) Speed: Measure one break contact, m/s
(8) Average Closing (Opening) Speed: Measure one break contact, m/s
(9) Moving Contact Travel: Measure one to six break contacts simultaneously, mm
(10) Moving Contact Over-travel (Contact Travel): Measure one to six break contacts simultaneously, mm
(11) Close-Open Time (Metal Short-circuit Time): ms
(12) Dead Time (Auto-reclosing No-current Interval Time): ms
2. Main Performance and Features of the Instrument
(1) The instrument uses high-stability components, floating, large-area, digital filtering and other anti-interference technologies.
(2) The instrument is equipped with two displacement sensors, suitable for detecting high-voltage circuit breakers with different distance, speed, and precision requirements. After different sensors are inserted, the instrument will automatically identify them. The instrument can automatically identify closing (opening) operations and reclosing operations of high-voltage circuit breakers, and automatically collect all data after operations. The measurement and calculation process is automatically completed by the CPU.
(3) The instrument has automatic identification capability and strong self-protection functions for wiring errors during measurement and incorrect commands or unsuccessful operations during operation of high-voltage circuit breakers.
(4) The instrument displays the closing (opening) sequence and the actual closing (opening) time of each break contact, providing a basis for the maintenance and debugging of three-phase non-simultaneity and same-phase non-simultaneity of high-voltage circuit breakers. For time-related data, values with 0.1 millisecond precision are automatically not displayed or output.
(5) For the measurement of moving contact travel and over-travel, as long as a sensor is installed on the break contact of any phase of the high-voltage circuit breaker, the travel and over-travel data of all three-phase break contacts can be measured and calculated simultaneously. The speed measurement accuracy of the instrument is 1% m/s.
(6) The power supply box provides 0-250V DC operating power to directly operate the high-voltage circuit breaker. It is suitable for operating mechanisms with electromagnetic, hydraulic, spring energy storage, and other DC control.
(7) The instrument is small in size, light in weight, simple to operate, and easy to carry. It is especially suitable for field mobile detection and on-site inspection and testing in substations. It is an essential tool for the production, inspection, maintenance, and debugging of high-voltage circuit breakers.
III.
KJTC-IV High Voltage Switch Mechanical Characteristics Tester Technical Specifications
1. Comprehensive Technical Specifications
External Operating Power Supply Voltage: AC/DC 48V-280V
Output Operating Mechanism Voltage: AC/DC 48V-280V
Number of Break Contacts Measured Simultaneously: 1-6
Distance from Host to Measurement Precision and Error Sensor: Mechanical sensor 10 meters
Vacuum sensor 5 meters
Working Power Supply: AC 220V; 50Hz ±10%
Working Ambient Temperature: -0°C to +40°C
Power: <55W
Weight: Host 5kg
2. Measurement Accuracy and Error
IV. Instrument Panel Introduction (see Figure 1)
1. Voltage input; 2. Closing/opening signal wiring socket; 3. Break contact signal wiring socket; 4. Sensor input socket; 5. Measurement result display screen; 6. Printer; 7. 220V power socket; 8. Instrument power switch; 9. Operation keys; 10. Data print key; 11. Waveform print key; 12. Curve print key; 13. Data display key; 14. Clear key; 15. Grounding terminal.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
