Our company has long been committed to the product development and production of neutral point grounding technology; It has good effect on reducing overvoltage and improving safety and reliability of power grid. Our company with special nickel chromium alloy or stainless steel material, used in 0.22 ~ 35kV AC power grid.

Bw-bz transformer neutral point resistance cabinet is a complete set of grounding equipment including grounding transformer developed by our company for the above system requirements. It can be installed in the power plant power system, substation power supply system, industrial and mining enterprise power distribution system, to achieve the system operation mode of neutral point grounding through resistance.

There are many ways to connect the neutral point to the ground through high group, among which the combination of single-phase grounding transformer and resistor is preferred. Bw-fz type generator grounding resistance cabinet produced by our company is compact in structure, small in size, light in weight and excellent in component performance. Grounding transformer is impact resistant, flame retardant and small. The cathode is made of nickel-chromium alloy, stainless steel and other materials, with high resistivity, high temperature tolerance, corrosion resistance, stable performance, strong flow capacity, suitable for various complex environments.

Ordering instructions

● Rated voltage, capacity and ratio of grounding transformer, resistance value, current time.

● Generator rated voltage, grounding transformer capacity and ratio, resistance value, flow time;

Insulation form of grounding transformer;

● Current transformer ratio, accuracy, capacity;

● Cabinet color, in and out line; There is no isolation switch and lightning arrester;

● Installation mode: indoor/outdoor, IP level.

Model specification

Using the environment

● Divided into indoor type and outdoor type;

● Ambient temperature: not less than -40℃, not higher than +55℃;

● Altitude is customized according to customer requirements;

● Power grid frequency 58Hz ~ 62Hz (60Hz system), 48Hz ~ 52Hz (50Hz system)

● The air in the installation site should not contain corrosive gas and steam, no explosive dust, no conductive dust;

● The air humidity is not more than 95% (25℃);

● The wind speed does not exceed 34m/s;

● Earthquake intensity: less than 8;

● Ice thickness: less than 10mm.

Primary system diagram

● Transformer neutral grounding scheme through the resistor grounding scheme is the best.

● Generator neutral through high resistance grounding scheme by grounding and resistor combination scheme is the best.

● Small volume and light weight; Grounding variable impact resistance, flame retardant, small.

● Resistance using nickel chromium alloy or stainless steel and other materials, high resistivity, high temperature tolerance, good corrosion resistance. Suitable for all kinds of complex environment.

● Can be equipped with isolation switch, current transformer, provide fault signal interface and protection interface.

● Can be installed resistance cabinet comprehensive measurement and control device BW-DZ-6, to achieve resistance, fan break alarm, resistance infrared wireless temperature measurement and other powerful functions.