Sheath Fault Tester
Sheath Fault Tester is a powerful system. It is an intact sheath of a plastic insulated medium, high or extra high voltage cable is the prerequisite for the avoidance of water ingress and subsequent cable faults. Different test can be carried using sheath fault locator. Sheath/earth faults is develop in any type of underground cable network such as low, medium, high voltage power cables or unshielded multi core control cables.
- There manually selectable convince DC ranges for application
- Cable and cable sheath testing up to 12 kV between metallic sheath / armoured and mass of earth.
- Automatic sheath fault pre-location with high precision measuring bridge method.
- Cable sheath fault pin pointing by pool of potential method.
- Automatic discharging facility of cable under test, in case of power failure or after switching off.
- Conversion of high-resistance faults in low-voltage cables.
- Burn mode for conditioning the sheath fault.
- It is extremely user friendly in obtaining the fault distance; it uses a micro-controller based fault distance calculator that enables the operator to get the pre-location measurements with precise accuracy.
- Continues operation for extended period in case of pin-point difficult sheath faults.
- Rugged construction and easy to carry on site.
| Technical Specifications | |
| Test Voltages | 0-3, 0-6 & 0-12 kV DC continuously variable |
| Test Current | 3 kV – 400 mA, 6 kV – 200 mA, 12 kV 100 mA DC |
| HV Range Selection | Manual |
| Indication | ON/OFF lamp indication, Analog moving coil meter for output voltage (kV) indication, Analog moving coil meter for output current (mA) indication, Over heat LED indication, Fault pre-location distance on LCD display & Sheath voltage drop indication on DPM |
| Pulse Ratio for Pin-pointing | 1:3 second and 1:6 second selectable ON OFF time ratio |
| Cooling System | Air Cooled |
| Fault Distance Calculator | LCD display-16×2 characters with back light |
| DPM Power Supply | 6V, 1.5Ah Rechargeable battery |
| Over Load Protection | Mains Input current MCB switch in Live & Fast blow fuse in input mains supply. |
| Safety Protection | Variac Zero inter-lock |
| Earth Discharge | Output cable Plug inter-lock, HV Switch inter-lock & Over Heat Protection |
| Soft automatic discharge through in-built solenoid | |
| Working Temp. | 0°C – 55 °C |
| Storage Temp. | – 5°C – 60°C |
| Dimensions | 555 (L) x 355 (W) x 620 (H) mm + Handle 50mm + Wheel 65mm |
| Weight | 70 Kg Approx |
| Sheath Fault Locator EFL 1 | |
| Meter | 5-0-5uA |
| Sensitivity | High & Low |
| Input resistance without amplifier | 700 K Ohm |
| Input resistance with amplifier | 100 K Ohm |
| Current Supply | 1.5V x 8 Alkaline AA size cells |
| Dimensions | 215 (L) x 200 (D) x 80 (H) mm |
| Weight | 0.8 Kg Approx. |
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