This product is three-phase AC 50 Hz outdoor high-voltage electrical equipment, applicable to the 110 kV power transmission system control and protection, but also can be used as a contact breaker and Open-capacitors occasions.

Main Features: Self-"thermal expansion" interrupter principle. Breaking excellent performance, power, long life, small power operation for the gas pressure of 20%, high reliability. Allocated by spring actuator, no oil spills leak from the environmental temperature stable performance. structure used in the home, pleasing in appearance, small footprint, and ease of installation. exposed parts treated with preservatives used new technology-resistant properties.

Main technical parameters:

1. Rated voltage (kV rms), 72.5 145 245
frequency (Hz.) 50 50 50
2. Continuous current 1250/1600 1000 1250
rating (A rms)
3. Type 3 pole outdoor SF6
4. Mounting Hot dip galvanised lattice steel support structure, bolted
type to be supplied by the Bidder.
5. Number of Poles 3 3 3
6. Type of Operation 3 pole gang 3 pole gang Individually
Operated operated operated
single poles
7. Phase to phase spacing 1400 1700 4000
in the switchyard i.e.
Interpole spacing for
breaker (mm)
8. Required ground 3000 4000 5000
clearance from the lowest
live terminal if both the
terminals are not in
the same horizontal plane. (mm)
9. Phase to earth 800 1300 2400
clearance (mm)
10. Height of concrete plinth 150 150 150
(to be provided by the
Purchaser) (mm)
11. Minimum height of the 2550 2550 2550
lowest part of the ( Bidders offering lesser clearances must
support insulator from substantiate the same with adequate
ground level (mm). Information on impulse test withstand
capability of equipment)
12. Operating mechanism Spring / Pneumatic Spring / Pneumatic
(with unit compressor) (with unit compressor)