Application

The triple pole air break switch is gang operated and designed for outdoor application. The switch is designed to suit overhear systems used in high density urban situations or high load centers, where the load is much higher and the need of improved and steady quality supply is much greater. Main function of this product is to isolate the Transformer, Overhead lines, System or Cables from distribution network.

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 hot dip galvanized and non-ferrous parts are heavily tinned to withstand weather. Jumper is of EC grade braided tin plated copper of appropriate size to complete the current path from moving post to fix post.

Features

• Low Contact resistance through the life of switch.

   

• Sturdy design of current carrying parts.

   

• Robust design and construction.

   

• Smooth and trouble free operation.

   

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 mounted 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	33 KV
2	RATED VOLTAGE	36 KV
3	RATED CURRENT	400 AMP.
4	IMPULSE WITHSTAND VOLTAGE TO EATH ACROSS THE TERMINALS	170 KV
		195 KV
5	POWER FREQ. WITH STAND VOLT TO EARTH ACROSS THE TERMINALS	70 KV
		80 KV
6	RATED SHORT TIME CURRENT FOR 1 SEC.	25 KA
7	WEIGHT OF ISOLATOR (APX.)	200 KG.
8	GOVERNING SPECIFICATION	IS 9921-1985