Isolator

Skipper manufactured Isolators for Railway traction system complies to specification no. TI/ SPC/ PSI/ ISOLTR/ 1060. These Isolators are motorized with Earth Switch and are available in two configurations i.e. Single and Double pole suitable for outdoor use with 25kV, 50Hz overhead equipment, traction substations and switching sub stations. They are generally used as outdoor sectionalizing equipment.

Since the Isolators find application in polluted atmosphere which is subject to dust, smoke and effluents from chemical plants, Skipper manufactured Isolators are manufactured with all care to make them rugged to withstand the above mentioned atmospheric conditions.

In case of a failure of Isolator motor, the design permits its use manually also to ensure uninterrupted working.

In installed condition, the rugged construction of the Isolator enables it to bear forces including wind load and electrodynamic forces on the attached conductors.

The springs used for the Isolator contact assembly are made up of phosphor bronze complying to IS: 7608-1975. The characteristics of all springs conform to IS: 7906 (Pt. II) – 1976 and their mechanical properties are not affected by the rise in temperature.

The Isolators are available as four variants viz.

SL#

Type

Rated Current

Application

1

I-“A”

1250A

Used in stations and sidings

2

I-“B”

1250A

Used in OHE at SP & SSP

3

II

1600A

Used at FP and traction Sub Station

4

III.5

3150A

Used at OHE on traction Sub Station