29kV Gas Insulated Switch Gear


Bus, switch, transformer and lightning arrester are built-in inside the metal casing. This is an integrated switch, with the insulation maintained by filling in SF6 gas, which has excellent insulation and arc extinguishing properties.

Characteristics of the Product
  • This model was made smaller and lighter than the current 72.5kv GIS to miniaturize the transforming facilities.
  • The main components are standardized, to form a bay to ensure convenient installation, operation and maintenance.
  • Metal casing is grounded to secure safety in operation and repair.

Auxiliary sectioning post of electric railroad

Auxiliary sectioning post

Rated voltage (kV) 29
Rated current (A) 630 / 2000
Rated short time current (kA) 20
Rated interrupting time (cycle) 3
Rated frequency (Hz) 60
Power frequency withstand voltage
phase/earth 95
polarity 110
Lightning impulse withstand voltage
phase/earth 200
polarity 220
Duty cycle O-0.3s-CO-3min-CO
Rated gas pressure (Mpa) 0.2
Minimum guaranteed pressure (Mpa) 0.15
Product Photo