|
Application
The triple pole air break switch is gang operated and designed for outdoor application.
The switch is intended for switching of the Transformer, Overhead lines and Cables from
distribution system.
Construction
The A.B. Switch have triple pole construction and shall be suitable for Vertical /
Horizontal mounting. Each pole consist of galvanized steel base, insulators of reputed
make, copper alloy male and female contacts, arcing horns of adequate section to break
magnetizing current of transformer. M.S. square coupling rod of adequate length for
rocking operation, required length of G.I. pipe for operation from ground level and
operating handle is specially design for smooth operation. Adjustable pins are provided
to limit over travel of moving post. Ferrous parts are galvanized and non-ferrous parts
are heavily tinned. Jumper is of EC grade braided copper of appropriate size to complete
the current path from moving post to fix post.
Operation
The handle, fabricated from channel and angular lever, fabricated from angle, are
designed for smooth, sturdy and trouble free operation. On and off operation should be
quick for fast extinguishing the arc. The handle is provided with locking arrangement.
Installation
It can be mount vertically and horizontally on 2 nos. channels based on two-pole
structure. Install three phases of AB switch on structure, pass the square coupling rod
through bracket on center post, tighten all the bolts on moving brackets, keep the switch
in ON position, fix the round pipe vertically and clamp the handle in ON position. Make it
ON and OFF several times.
TECHNICAL PERTICULARS :
|
Sr. No.
|
PART NAME
|
QTY.
|
|
1
|
SYSTEM VOLTAGE
|
11 KV
|
|
2
|
RATED VOLTAGE
|
12 KV
|
|
3
|
RATED CURRENT
|
400 AMP.
|
|
4
|
IMPULSE WITHSTAND VOLTAGE TO EATH
|
60 KV
|
|
|
ACROSS THE TERMINALS
|
75 KV
|
|
5
|
POWER FREQ. WITH STAND VOLT TO EARTH
|
28 KV
|
|
|
ACROSS THE TERMINALS
|
32 KV
|
|
6
|
RATED SHORT TIME CURRENT FOR 1 SEC.
|
10 KA
|
|
7
|
WEIGHT OF SWITCH SET (APX.)
|
60 KG.
|
|
8
|
GOVERNING SPECIFICATION
|
IS 9921-1985
|
|
