JN X-40.5/31.5 Indoor AC High Voltage Earth Switch
JN -40.5/31.5 type high voltage AC earth switch is a new developed product with international advanced level after JN15-12/31.5 indoor high voltage earth switch.Its structure is the assembly type.Comprehensive assessment,features are desirable inthe demands of the GB1985-2014 High Voltage AC Isolation Switch and Earthing Switch and IEC32271-10:2002.Be appropriare for 40.5kV three-phase AC 50Hz in the power system.It has a close short circuit ability to protect switch equipment within the other electrical equipment from being damaged,also as a high voltage electrical equipment maintenance earthing protection.
Main Technical Parameter
ItemUnitDataRated VoltagekV 40.5Rated short-time withstand currentkA31.5Rated short circuit durations4Rated short-circuit currentkA80Rated peak withstand currentkA80Rated insulation levelPF withstand voltage(1min)kVExtreme to earth phase to phase95Lightning impulse withstand voltage185Mechanical endurancetime3000
JN -40.5/31.5 Indoor AC High Voltage Earth Switch Outline and Installation Size