KX-FNR 10.5kV Neutral point grounding resistance cabinet

Neutral point grounding resistance cabinet

             --Comprehensive solutions for power safety prevention

During equipment operation, single-phase grounding is the most common fault. Arc grounding at the fault point will further expand the stator winding insulation damage and even cause iron core burns and sintering. If it is not found in time and quickly removed, the fault will develop into phases or turns. Short circuit between. Based on the above reasons, high resistance grounding of the neutral point of generators is widely used internationally to limit the ground current and prevent various overvoltage hazards, and good operating experience has been obtained.

The neutral point grounding through resistance has been applied to my country’s power distribution network system in the 1990s, and is currently widely used in my country’s urban power supply systems, power plants, railways, metallurgy and petrochemical systems, and is useful for improving the reliability and safety of system operations. Sex has a good effect.

Kaixiang Technology is one of the earliest domestic manufacturers to develop and produce neutral point resistance devices for power systems. The generator neutral point grounding resistance complete set device can fully meet the requirements of the power neutral point for equipment in terms of thermal and electrical performance. It has high temperature resistance, high resistivity, low temperature coefficient of resistance, and high tensile strength. With excellent mechanical properties such as good toughness, it is a special set of equipment for 0.4kV ~ 35 kV equipment.

Executive standard

DL/T 780-2001      Neutral point grounding resistor for power distribution system

GB 6450-1986      Dry-type power transformer

DL/T 620-1997      Overvoltage protection and insulation coordination of AC electrical installations

GB 763-1990        Heat generation of AC high-voltage electrical appliances during long-term work    

GB/T 16927-2011    High voltage test technology

GB 1208-2006      Current Transformer

GB/T 4208-2017     Enclosure protection level (IP code)

IEEE 32-197        Technology, terminology and test of neutral point grounding device     

GB 311-2012        Insulation coordination

GB/T 11022-2011   Common technical requirements for high-voltage switchgear and control equipment standards

JB/T 10777-2018    Neutral grounding resistor

Operating environment

1. Altitude: not more than 3000m;

2. Ambient temperature: -30℃~+50℃;

3. Relative humidity: not more than 95% (25℃);

4. Installation site: The air does not contain corrosive chemical gases and vapors, and there is no explosive dust;

5. Grid frequency: 48~52Hz (50 Hz system), 58~62 Hz (60 Hz system);

6. Applicable to: indoor and outdoor;

7.Installation point: Under normal conditions, the neutral point displacement does not exceed 3% of the operating phase voltage

Hebei Kaixiang Technology was established in 1994, long-term focus on smart power detection technology development and application in shipbuilding, petroleum, offshore platforms, data centers, communications, power, military, aviation, research institutes and other areas, and in strict accordance with the ISO9001 international quality standard management system for the design, manufacture and service.

The company's core technologies are independent research, has seven patents, 10 software copyrights, two corporate standards.Among them, Kaixiang "smart power marine generators AC load," Science and Technology Department of Hebei Province has been named the international advanced level scientific and technological achievements, the enterprise standard "dry AC load" to upgrade the industry standard by the Ministry of publicity.

Hebei Kaixiang Electrical Technology Co., LTD.

Bruce Pan

ADD:No33 Wangshan Road,Luquan Economic Development Zone, Shijiazhuang, Hebei, China

Tel: 0086-311-85138355  Fax: 0086-311-85138330

Phone:008613739721527   Skype: brucepan1981   

Email:ft(at)kxload.com; bruce(at)kxload.com

Web: http://www.load-banks.com 

We are a professional manufacturer of load bank for over 20 years history in Hebei,China,If you have any questions,

send your inquiry details in the below. We will reply you as soon as possible.