IS 1180 : Part 1 : 2014 : Outdoor Type Oil Immersed Distribution Transformers Upto and Including 2 500 kVA, 33kV - Specification Part 1 Mineral Oil Immersed (Fourth Revision)

ICS 29.180 ETD 16

Reaffirmed 2019

[Amalgating IS 1180 (Part 2) : 1989]

1 SCOPE

This standard specifies the requirements and tests including standard loss levels of mineral oilimmersed, natural air-cooled, outdoor type, doublewound distribution transformers for use in power distribution systems with nominal system voltages up to and including 33 kV and of following types and ratings:

a) Three phase ratings up to and including 200 kVA both non-sealed type and sealed type.

b) Three phase ratings higher than 200 kVA, up to and including 2 500 kVA both non-sealed type and sealed type.

c) Single phase ratings up to and including 25 kVA sealed type.