Portable low voltage cable fault locating system
Cable fault pre-location: with the reflectometer XHGG502A2 based on the low-voltage impulse reflection method(TDR), and high-voltage decay (ICE) method DECAY. XHDD503 uses acoustic-magnetic synchronization method, equipped with 900 J surge generator and intelligent digital signal receiver. High voltage 900J surge generator XHHV515-8L is accompanied by a surge levels switch which allows to achieve the maximum surge impulse energy at 15 kV. XHGG521A cable outer sheath fault tester is designed based on the Murray bridge principle and can be used to locate breakdown points and defective points with low insulation resistance in various wires and cables, even if no breakdown has occurred.
It has features operator safety assurance systems and provides a reliable and comprehensive technical solution for low- and medium-voltage cables faults.
The cable fault locator set is a power cable fault testing specialized system equipment developed and produced by our company based on the rapid progress of the power industry and market demand. It is mainly used for testing open circuit, short circuit, grounding, low resistance, high resistance flash-over and high resistance leakage faults of power cables, as well as precise testing of open circuit and short circuit faults of coaxial communication cables and local telephone cables; It can also measure the measure the length of cables, and establish cable files for daily maintenance and management.
It mainly includes four parts:
| 1 |
XHHV515-8L Portable surge generator |
| 2 |
XHGG502A2 Cable fault pre-locator(TDR) |
| 3 |
XHDD503 Acoustic-magnetic synchronization cable fault pinpointer |
| 4 |
XHHG521A Cable outer sheath fault pre-locator |
Product Parameters
Part 1.High voltage surge generator( Thumper)
★ Impulse Voltage: 0~15kV
★ Short Circuit Current: 0~320mA
★ High Voltage Accuracy: Class 1.5
★ Built-in Capacitor: 8μF
★ Discharge Energy: 0~900J
★ Output Voltage Polarity: Negative
★ Impulse Power: 400W
★ Over-Temperature Protection: 65ºC
★ Over-Current Protection: 8mA (greater than 4S) on the high-voltage side
★ Over-Temperature Protection: 65ºC
★ Dimensions: 540L×310W×460H
★ Weight: Not more than 25kg
★Operating Power Supply: AC220V±10%/50Hz±1Hz
★ Ambient Temperature: -25~+65ºC
Part 2. TDR Cable fault pre-locator
| Sampling frequency |
80MHz |
| Low voltage pulse amplitude |
100V±15% |
| Ranging range |
≥65km |
| Test range |
300m/1km/5km/25km/65km |
| Pulse width |
0.125uS/0.50uS/2.50uS/7.25uS/10.0uS |
| Minimum resolution |
0.1m |
| Test blind area |
≤20m |
| Measurement error |
≤±(0.5%×L+1m), L is the cable length |
| Power supply mode |
charging AC110V~240V, 50Hz/60Hz |
| Volume and weight |
L358mm×W284mm×H168mm-4.7kg |
| Working conditions |
Temperature -20ºC~+65ºC, relative humidity 90%, atmospheric pressure 750±30mmHg |
Part 3. Cable Fault Pinpointer
★Magnification: 500,000 times;
★Positioning accuracy: less than 0.1m;
★Output impedance: 350Ω;
★Working power supply: 4 standard 3.7V 3200mAh batteries;
★ Static current: <10mA;
★Standby time: more than 20 hours
★ Ambient temperature: -25~65ºC; Relative humidity: ≤90%
★ Volume dimensions: 428L×350W×230H
★Overall weight: 7kg
Part 4. Cable Outer Sheath Pre-locator
★ Open-circuit voltage ≥ 7500V;
★ Short-circuit current ≥ 100mA (when adjusting balance, it is recommended to set it between 5 and 40mA);
★ Positioning accuracy: ±(0.2%·L±1) meters;
★ Weight: 25kg;
★ Power supply: AC 220V (±10%), 50Hz±1Hz; 8.4V built-in battery.
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