IEEE C57.12.21-2000
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IEEE C57.12.21-2000

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New IEEE Standard – Inactive-Withdrawn.This standard covers certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of single-phase, 60 Hz, mineral-oil-immersed, self-cooled, padmounted, compartmental-type distribution transformers with high-voltage bushings. These transformers are rated 167 kVA and smaller, with high-voltages of 34500 GRD/19900 volts and below for operation between one phase and grounded neutral, and low-voltage of 240/120 volts. These transformers are generally used for step-down purposes from an underground primary cable supply.NOTE¿¿¿Refer to latest federal regulations concerning polychlorinated biphenyl (PCB) contaminations in transformers.

Product Details

Published:
12/31/1992
ISBN(s):
9780738136257
Number of Pages:
18
File Size:
1 file , 110 KB
Product Code(s):
STDWD95108

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