Cable Fault Detector
Coal mines are major users of cables. Due to the extremely harsh underground working conditions, the annual damage to various cables is relatively large. To save expenses and reduce costs, coal mines generally have their own cable maintenance teams. However, due to harsh testing conditions and limitations of testing equipment, cable fault detection for mining cables often falls short of expectations. Taking advantage of various testing instruments and targeting the requirements of mining cables, our company has specially designed and manufactured a new generation of mining cable testers.
Cable Fault Detector Product Introduction:
The mining cable fault detector is based on the partial discharge method that does not damage the original layout of the cable. It can accurately detect the damaged parts of the cable and also has the function of testing after repair. Therefore, it is a reliable testing instrument for cable repair in coal mines. Coal mines are major users of cables. Due to the harsh underground working conditions, the annual damage to various cables is relatively large. To save expenses and reduce production costs, each mine generally has its own cable repair team. However, due to limitations of testing equipment and processes, fault detection during the repair of cables such as those used in comprehensive mechanized mining often falls short of expectations, and most use the forced breakdown method that causes significant damage to cable insulation. Taking advantage of various testing instruments and targeting the requirements of mining cables, our company has specially designed and manufactured a new generation of mining cable testers.
Structural Features:Cable Fault Detector
1. The GHKLC mining cable fault detector consists of a control part (low voltage) and high-voltage rectification, discharge, and testing parts. Sufficient safety space is reserved between high and low voltage, and between high/low voltage and the housing.
2. To ensure the safety of equipment and personnel, high voltage initiation must be operated by a designated person using a key.
3. Each fault detection or cable test ensures that high voltage starts from zero and rises. There are high and low voltage limit states. The voltage increase or decrease process is controlled by buttons, with smooth voltage change rates, making operation safe and simple.
4. The DC withstand voltage test time can be automatically controlled by a digital timer (or manually controlled), ensuring accurate and reliable test time.
5. Leakage current can be measured at any time as needed during the withstand voltage test process.
6. The equipment has overcurrent and short-circuit protection, with pre-start warning and overcurrent protection.
7. The control panel is equipped with power switch, high voltage start, high voltage stop, voltage increase, voltage decrease switches or buttons, and a digital timer relay for withstand voltage test time.
8. The display panel has meters for high voltage, leakage current, and low voltage total current, as well as indicator lights for power, high voltage, and timing, and a window for observing sphere gap discharge.
9. A dedicated high-voltage discharge rod is provided for discharging after each fault detection or test to ensure safety. The bottom of the box has a grounding symbol.
Technical Parameters of Mining Cable Fault Detector:
1. Working voltage: AC220V 50Hz
2. DC output for fault detection: 0—15KV
3. Cable fault detection accuracy: ±50mm
4. Test output voltage: 0—30KV
5. High-voltage energy storage capacitor: 1.4μf/12KV,
6. AC output voltage: 0—22KV
7. Withstand voltage test time: 0—30s (adjustable)
8. Leakage current test: 0—300μA
9. High-voltage transformer capacity: 4KVA
10. Discharge sphere adjustment distance: 0—10mm
11. Dimensions: 900×850×1200
