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Product Description

Product Overview

SF6-40.5/1250-31.5kA type high voltage switch, suitable for 35kV transmission and distributionsystem control and protection, used to split the load current, break the short circuit current. The modulardesign is characterized by compact structure, good breaking performance, high reliability, long life, fullinsulation, maintenance-free, small footprint, and can be widely used in industrial, civil ring networks andterminal power supply networks. Especially suitable for small secondary distribution power stations.opening and closing stations, industrial and mining enterprises, airports, railways, highways, subways,

business districts, living quarters, wind power, optoelectronics and other fields.

Main Technical Parameters

No.ItemUnitTechnical   Parameters
1Rated   Voltage (kV)kV40.5
2Rated   Frequency (Hz)Hz50
3Rated   Current (A)A1250   / 1600 / 2000 / 2500
4SF6   Gas Rated Pressure (Gauge Pressure at 20°C)
    For Gas-Insulated Switchgear
MPa0.04
5Rated   Power Frequency 1min Withstand Voltage Isolation   GapkV118
Phase-to-Phase / Phase-to-Ground95
Rated Lightning Impulse Withstand Voltage  Peak (1.2/50μs)
   
Isolation   GapkV215
Phase-to-Phase / Phase-to-Ground185
6Rated   Short-Time Withstand CurrentKa/s31.5/4
7Rated   Peak Withstand CurrentkA80
8Rated   Short-Circuit Breaking Current kA31.5
9Rated   Short-Circuit Making Current kA80

弘威样本册 英文版-20

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