MEMU

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 voltage kV 40.5
2  Rated frequency Hz 50/60
3  Rated power frequency withstand voltage(1min) kV 95/110
4  Rated lightning impulse withstand voltage kV 185/215
5  Rated current of main/branch busbar A 630、1250、1600、2000、2500
6  Rated short-time withstand current kA 31.5/4
7 Rated peak withstand current kA 80
8 Rated short-circuit breaking current kA 31.5
9  Rated short-circuit closing current kA 80
10  Protection level of gas sealed chamber IP67
11  Protection level of switch cabinet body IP4X
12 Insulating gas SF6
13  Mechanical lifespan of circuit breaker 20000







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