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NRTs 40.5kV gas insulated switchgear

Main features of the product

The core unit (gas box) adopts 304 stainless steel and laser static sealing welding technology, making its protection level up to IP68

Using SF6 as insulation and arc extinguishing medium, easy to expand on site

The three position switch and the operating mechanism module are connected through a special magnetic fluid sealing structure

Equipped with independent functional compartments and explosion-proof pressure relief devices

Standard inner cone sleeve, outer cone sleeve, and connector for simpler connection

Improve the reliable "five prevention" interlocking function and configuration

Technical parameter

Serial number                    Name                    Unit                    Main technical parameters                    
1 Rated voltagekV40.5
2 Rated frequencyHz                    50/60
3 Rated power frequency withstand voltage（1min）kV                    95/110
4 Rated lightning impulse withstand voltagekV                    185/215
5 Rated current of main/branch busbarA630、1250、1600、2000、2500
6 Rated short-time withstand currentkA31.5/4                    
7Rated peak withstand currentkA80
8Rated short-circuit breaking currentkA31.5
9 Rated short-circuit closing currentkA                    80
10 Protection level of gas sealed chamberIP67
11 Protection level of switch cabinet bodyIP4X
12Insulating gasSF6
13 Mechanical lifespan of circuit breaker次20000


       


       


       


       




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