It is used for locating and testing fault points of poor insulation to ground in direct buried street light cables, direct buried high and low voltage cables, and metal conductors of optical cables. It is applicable to dead ground faults that cannot be located by acoustic detection of high-voltage cables, railway signal lines, low-voltage power and lighting buried cables that form a circuit with the ground, and various cables with metal conductors (wire pairs, sheaths, shielding layers). Its main functions include not only locating and testing poor insulation points to ground, but also detecting cable routes and the burial depth of cables.
This instrument adopts a quartz crystal oscillator and medium and large scale integrated circuits. Its characteristics are high receiving sensitivity, low static drift, strong anti-interference capability, stable operation, and high accuracy. Since the instrument is powered by a small nickel-cadmium battery, it has the advantages of small size, light weight, low power consumption, and easy portability, making it especially suitable for field operations.
