Henan Energy Electric Equipment Co., Ltd. was established in 2011 and is an excellent and reliable power equipment manufacturer in China. The company mainly develops and produces oil-immersed transformers, dry-type transformers, box-type substations, high-voltage switches, and medium and low voltage complete sets of equipment. The equipment put into production and operation of the project advocates energy saving, intelligence, informatization, and mechanization. The company has established the Henan Triangle Energy-saving Transformer Engineering Technology Research Center, with 71 utility model patents and 15 invention patents. With years of accumulation in the transformer industry and strong technological innovation capabilities, HZEC products are sold to the Middle East, North America, South America, Europe, Southeast Asia, Africa, and other regions, covering more than 40 countries.
Product Description
The low voltage grounding resistance cabinet is a special set of equipment for resistance grounding in the low voltage system developed by our company. To reduce the overvoltage of the power grid and improve the safety and reliability of the power grid, it is suitable for low voltage diesel generator set 0.22kV, thermal power plant 0.38kV, coal enterprises 0.66kV, power users 0.1kV low voltage system, starting and braking and power resistance equipment.
Product Parameters
| Model |
Rated voltage (kV) |
Rated resistance(Ω) |
| DR-0.4/35 |
0.4 |
35 |
| DR-0.4/44 |
0.4 |
44 |
| DR-0.66/76 |
0.66 |
76 |
| DR-0.66/51 |
0.66 |
51 |
| DR-0.66/1200 |
0.66 |
1200 |
| DR-0.66/2000 |
0.66 |
2000 |
All parameters can be customized, from 1Ω to 2000Ω, 0.5A to 1000A.
Properties
1. The low-voltage resistance cabinet has high precision, good linearity, reliable operation, easy installation and beautiful appearance;
2. The internal resistor is made of high-quality non-metallic special materials or stainless steel nickel chromium alloy (Cr20Ni80), stable resistance, high conductivity, strong flow ability, high temperature resistance, corrosion resistance, fire and explosion proof, high reliability;
3. can be applied to a variety of low-voltage distribution system, in the low-voltage line, such as no neutral point, grounding transformer can be used with it, to suppress the system overvoltage, to prevent various shocks have a good effect.
Outline Diagram Examples
Service Environment
1. Ambient temperature: -40ºC ~ +60ºC, relative humidity: not more than 95% (35ºC);
2. Installation site elevation does not exceed 4000m;
3. The air in the installation site should not contain chemical corrosive gases and steam, and no explosive dust;
4. Power grid frequency: 48 ~ 52Hz (50Hz system), 58 ~ 62Hz (60Hz system).
Order Instruction
1. System rated voltage: (kV); Short-time allowable current: (A); Nominal resistance: (Ω); Short allowable flow time: (S);
2. Inlet and outlet of the cabinet: up-down or down-down;
3. The material, color (or provide color code), protection level (IP) and installation location (indoor or outdoor) of the cabinet;
4. Whether it is necessary to install current transformer (CT: CT ratio and capacity), grounding recording device, temperature and humidity controller;
5. Isolation switch can be installed to facilitate maintenance.
Certifications
Audited Supplier 
The low voltage grounding resistance cabinet is a special set of equipment for resistance grounding in the low voltage system developed by our company. To reduce the overvoltage of the power grid and improve the safety and reliability of the power grid, it is suitable for low voltage diesel generator set 0.22kV, thermal power plant 0.38kV, coal enterprises 0.66kV, power users 0.1kV low voltage system, starting and braking and power resistance equipment.
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