ENGR intelligent resistance grounding equipment

Product Introduction:

6kV ~ 35kV transmission and distribution systems are mainly composed of cable lines. When the single-phase grounding fault capacitor current is large, the low-resistance grounding mode can be used, but the reliability requirements of the power supply, the transient voltage at the time of fault, the impact of the transient current on the electrical equipment, the impact on communication, the technical requirements of relay protection and the local operating experience should be considered.

Use environment:

Resistance use environment:

When the normal use conditions are exceeded, the two parties shall negotiate to determine.

Product characteristics

• Low system overvoltage: When resistance grounding is used, the system overvoltage level is low, less than 2.5Ue.

• Fast fault isolation: With feeder zero sequence protection, once the feeder has a fault, the trip to isolate the fault

• Intelligent monitoring: Intelligent controller can be configured to monitor resistance temperature, current, grounding times, etc., and data can be uploaded to the background.

• Infrared temperature measurement: When measuring the temperature of the resistor, infrared non-contact measurement is used, the primary and secondary devices are completely isolated, the temperature measurement is sensitive and accurate, and the temperature change can be responded within 1.5 seconds

• High insulation level: mica, ceramics and other materials are used between the resistance components to ensure high insulation strength between the resistance pieces and the resistance pieces and fixed parts

• High tensile strength: The application of special and effective structural design, so that each part of the resistance has a high strength; The resistance components are connected by argon arc welding, and the contact is good and reliable. The resistor is fixed between the pieces, fully considered

• Diversified operation modes: The resistance operation mode can be directly connected to the neutral resistor, the resistor can be switched, and the flexible grounding mode (arc suppression coil parallel resistance and other modes).

• Modular design: Each type of resistor is manufactured into a variety of standard components to achieve modularity. Through the series, parallel method, can be any combination, to meet your requirements on the flow capacity, voltage, resistance value and other parameters, easy to replace

• Full range of products: production of 6kV to 66kV, independent design and production of all ground changes (including neutral ground changes), resistors, controllers, including dry and oil immersed products.

Product characteristics

Products in the state grid, the South network, metallurgy, petrochemical, power generation, subway, railway, airports have been widely used, so far has provided customers with more than 2000 sets of products to ensure the stable operation of substations in various industries, years of continuous improvement and improvement, so that we can ensure the quality and delivery at the same time, to provide professional, perfect, rich pre-sales, after-sales service and training in the same industry; The products are exported to South Asia, Africa, etc., and are highly praised by overseas customers.