Street Light Cable Fault Tester Test System Composition
Composed of cable fault test system, test system, pinpointing instrument, path instrument, and high-voltage components.
Street Light Cable Fault Tester Features
1. The system test consists of three parts: the system host, fault locator, and cable path instrument. It is used for testing various types of faults in power cables, cable paths, locating cable burial depth, daily maintenance management of cable archives, and precise testing of railway, airport signal control cables, and street light cable faults.
2. Cable fault tester (pulse distance meter): low-voltage pulse distance measurement (for short circuit, open circuit faults, and full cable length detection), high-voltage pulse distance measurement (for high-resistance flashover and leakage faults).
3. Pinpointing instrument: acoustic pinpointing method, with precise pinpointing error less than 10 cm.
4. Path instrument: composed of a transmitter and receiver, operating frequency: intermediate frequency.
5. High-voltage components: used for generating high-voltage signals during precise pinpointing and high-voltage pulse distance measurement.
Technical Parameters
1.
1.1. Capable of testing various types of faults in copper and aluminum core high and low voltage power cables of all models up to 35kV. The propagation speed is pre-set in the instrument, including common oil-impregnated paper cables, cross-linked polyethylene cables, non-drip, and PVC cables, with wave speed measurement function to determine the propagation speed of special cables. Cable length and fault distance measurements are directly displayed on the screen without manual conversion.
1.2. Capable of testing low-resistance grounding, low-resistance short circuit, high-resistance grounding, high-resistance short circuit, open circuit, high-resistance leakage, high-resistance flashover faults, and full cable length for various types of cables.
1.3. Measurement methods: low-voltage pulse, high-voltage flashover (high-voltage pulse current method).
1.4. Test distance: not less than 40km.
1.5. Single-end blind zone distance: <10 meters.
1.6. Waveform sampling frequency: 25MHZ.
1.7. System error: not exceeding 0.1 meters.
1.8. Uses dual vertical line optical cursors; after cursor positioning, the distance from the fault point to the test end can be directly displayed on the screen.
1.9. Built-in lithium battery.
2. Path Instrument
The path signal generator can produce a discontinuous sinusoidal signal with a frequency of 15KHz and a maximum amplitude of 30V, used for locating cable paths.
The path signal receiver is used to receive path signals, find cable routes, and estimate the depth of cable burial.
3. Pinpointing Instrument
The cable fault locator is a high anti-interference, high-sensitivity cable fault precise pinpointing test instrument developed by our company based on research results. This instrument combines low-noise design with high-performance filtering circuits, enabling precise and rapid pinpointing of various cable faults, especially with unique testing effects for cross-linked cables and sealed cable faults.
☆ Input resistance greater than 1kΩ
☆ Operating voltage - uses 9V laminated battery
Operating current - about 20mA
☆ Headphones use low-impedance high-quality headphones
☆ Weight: 2kg (including probe and headphones)
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
