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HF-CH-216 High Voltage Signal Generator for Cable Sheath Fault Location
This portable high voltage signal generator is specially designed for cable sheath fault detection. It features adjustable output voltage, dual analog meters for real-time monitoring and multi-layer safety protection, housed in a rugged waterproof case suitable for field power testing work.
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The Signal Generator for Cable Sheath Fault Location is a professional portable high voltage testing instrument dedicated to detecting and pinpointing faults on EHV power cable outer sheaths. Integrated with an internal high-voltage constant current source, it supports stepless adjustment of output voltage and current, and permits continuous short-circuit operation.
Built-in multi-safety protections such as ground interlock and zero-voltage startup effectively prevent electric hazards. With sufficient output current, it can also conduct cable sheath DC withstand voltage tests. Flexible power supply modes are available: the main transmitter works with mains power or generators, while supporting sensors and receivers run on dry batteries, perfectly suited for all kinds of outdoor on-site power maintenance projects.
Built-in multi-safety protections such as ground interlock and zero-voltage startup effectively prevent electric hazards. With sufficient output current, it can also conduct cable sheath DC withstand voltage tests. Flexible power supply modes are available: the main transmitter works with mains power or generators, while supporting sensors and receivers run on dry batteries, perfectly suited for all kinds of outdoor on-site power maintenance projects.
Product Features
- The high-voltage signal source for EHV cable sheath faults comes with a built-in high-voltage constant current source. Its output voltage and current are continuously adjustable, and it supports long-term short-circuit operation at the output terminal.
- Equipped with multiple safety protection mechanisms including ground interlock and high-voltage zero-position startup to ensure operation safety.
- It delivers large output current, which facilitates DC withstand voltage tests on cable sheaths efficiently.
- The transmitter can be powered by mains electricity or generators; the matched sensors and receiver adopt dry batteries for power supply.
Purpose
This signal generator is specially developed for locating insulation breakdown and grounding faults on the outer sheath of high-voltage & extra-high voltage power cables.
It outputs adjustable low-frequency pulsating DC high voltage to inject signals into faulty cable sheaths. Cooperated with matched receiving equipment, technicians can rapidly pinpoint the exact fault point on-site.
Besides fault hunting, it can also perform DC withstand voltage tests for cable sheath inspection, widely applied in power grid maintenance, cable engineering acceptance and routine cable insulation checking projects.
It outputs adjustable low-frequency pulsating DC high voltage to inject signals into faulty cable sheaths. Cooperated with matched receiving equipment, technicians can rapidly pinpoint the exact fault point on-site.
Besides fault hunting, it can also perform DC withstand voltage tests for cable sheath inspection, widely applied in power grid maintenance, cable engineering acceptance and routine cable insulation checking projects.
Technical Parameters
| Parameter Item | Technical Data |
|---|---|
| Output Frequency | 1 Hz |
| Open-circuit Voltage | Fundamental RMS: 0 ~ 2800 V Pulsating DC, peak value: 8 kV (Equal to phase voltage peak of 10kV power line) |
| Short-circuit Current | Fundamental RMS: 0 ~ 35 mA Pulsating DC peak value: 100 mA |
| Power Supply | AC 220V mains supply; Support external generator (Generator rated output power ≥ 1500W) |
| Maximum Output Power | 600 W |
Packing List
| No. | Item Name | Quantity | Unit | Remarks |
|---|---|---|---|---|
| 1 | Main Transmitter Unit | 1 | Set | Core high voltage signal generation host |
| 2 | High Voltage Output Connecting Cable | 2 | Pcs | For high voltage wiring connection |
| 3 | Earthing Ground Wire | 1 | Pc | Safety grounding for high voltage test |
| 4 | AC 220V Power Input Cord | 1 | Pc | Mains power supply line |
| 5 | Matched Receiving Sensor & Receiver | 1 | Set | For fault signal pickup & positioning |
| 6 | Spare Fuses | 3 | Pcs | Replacement consumable parts |
| 7 | Insulated Safety Gloves | 1 | Pair | High voltage operation protection |
| 8 | English Operation Manual | 1 | Copy | Detailed operating & parameter guide |
| 9 | Factory Calibration Certificate | 1 | Copy | Official calibration document |
| 10 | Quality Inspection Report | 1 | Copy | Factory outgoing test record |
| 11 | Warranty Card | 1 | Copy | After-sales service voucher |
| 12 | Shockproof Waterproof Hard Carry Case | 1 | Pc | Integral export packaging container |
| 13 | Moisture-proof Desiccants | 2 | Bags | Anti-humidity storage inside case |
FAQ – Signal Generator for Cable Sheath Fault Location
1. What is this device used for?
A: This professional high voltage signal generator is mainly used for fault location and DC withstand voltage testing on HV/EHV power cable outer sheaths. It injects stable low-frequency pulsating DC signals to help operators quickly find sheath damage and grounding faults.
2. What are the output parameters of the transmitter?
A: The device works at 1 Hz frequency. The open-circuit voltage is continuously adjustable from 0 to 2800 V (peak 8 kV), and the short-circuit current ranges from 0 to 35 mA (peak 100 mA). The maximum output power is 600 W, supporting long-term short-circuit operation.
3. What power supply modes does it support?
A: The transmitter supports AC 220V mains power or external generator power (≥1500W). The matched sensor and receiver adopt dry batteries for flexible field operation.
4. Does the machine have safety protection functions?
A: Yes. It is equipped with ground interlock protection and high-voltage zero-position startup functions. High voltage can only be output after safe grounding and zero reset, effectively avoiding electric shock and operational risks.
5. Why is it suitable for field cable maintenance?
A: The unit is portable, lightweight and shockproof. It features continuous adjustable voltage and current, large output current, short-circuit resistance and flexible power supply options, fully adapting to outdoor power construction and cable acceptance tests.
6. Can it be used for cable sheath withstand voltage tests?
A: Definitely. The large and stable output current enables standard DC withstand voltage inspection and insulation condition judgment for cable outer sheaths.
7. What accessories are included?
A: The full set includes transmitter unit, high-voltage wires, grounding cable, power cord, receiver & sensor, insulating gloves, fuses, operation manual, calibration certificate and waterproof carrying case.
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