The power transmission achieved through cables that are laid underground are called underground power cables. Though the installation cost of these cables is high, it is considered reliable.
An overhead lines can frequently be seen traversing the landscape from a long way away, while underground cables are employed where it is impracticable to use overhead lines, such as around plants and substations or where maintenance conditions do not permit the use of overhead construction.
Underground cable testing
The cables are tested for the following faults.
1. Short-circuiting
2. Discontinuity
3. Earth fault
To solve the faults happen on underground cables, our company developed the cable fault detecting test equipment. The
HYDGC-H cable fault tester is a comprehensive cable fault detection instrument. It can test cables for high-resistance flashover faults, high- and low-resistance grounding, short circuits, cable disconnections, poor contacts, etc. If equipped with an acoustic factory point instrument, the exact location of the fault point can be accurately determined. Suitable for testing cables and communication cables of various types and voltage levels. The complete set of power cable fault testers consists of three parts: flash detection, tracing, and positioning.
Cable fault tester (flash tester) can be used to detect low resistance, high resistance, short circuit, open circuit, leakage fault, and flashover fault of various cables. It can accurately detect the fault point location, cable length, and cable length of underground cables. buried path. It has the characteristics of accurate testing, a high degree of intelligence, wide adaptability, stable performance, lightness, and portability. The instrument has a high-definition display and a friendly interface.
Cable tracing and fault location are composed of path meter, point meter, T-type probe, A-frame, earpiece, etc. This instrument is a special instrument for cable fault location testing. It is suitable for testing various cables with metal conductors (line pairs, sheaths, shielding layers). Its main functions are positioning and testing of faulty ground insulation points, detection of cable paths, and testing of cable burial depth.
It is a fully functional tester. Testing is fail-safe, fast, and accurate. The low-voltage pulse method and high-voltage flashover method are used to detect various faults of the cable. Flashover and high-resistance faults of the cable can be directly tested without burning through. The precise location of the fault can be accurately determined using the acoustic legal point meter;