GW7 series Isolator switch(disconnectors) are outdoor 3-phase high voltage equipment. They are used to change over power circuit and electrically isolate the repaired equipment under no-load condition. GW7 are type of 3 poles centre rotating and double horizontal breaks.

Technical specification:
Outdoor, double break, with earthing switch complete 3 phase with steel structure:
Rated voltage: 132KV
Highest system voltage: 145KV
Insulation level: ( 275 -650 ) KV
Frequency: 50Hz
Creepage distance: 31. 5mm/KV
Rated current: 1600A
Rated short time current: 40KA for 1 Sec
Terminal: Line isolator / Bus bar isolator
Operating mechanical: manual & electrical (110V D.C motor).
Complete with all electrical & mechanical interlocking