Cart
0
Product
Products
(empty)
No products
To be determined
Shipping
$0.00
Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart.
There is 1 item in your cart.
Total products
Total shipping
To be determined
Total
Reduced price!
View larger
View larger
IEEE C57.92
New product
IEEE C57.92 1981 Edition, December 14, 1981 Guide for loading mineral-oil-immersed power transformers up to and including 100 MVA with 55 degrees C or 65 degrees C winding rise
More info
Description / Abstract:
This guide covers general recommendations for loading
mineral-oil-immersed power trans-formers, manufactured in
accordance with ANSI C57.12.10-1976 [1]1 and ANSI
C57.12.30-1977 [2] and other oil-insulated power transformers up to
and including 100 MVA maximum nameplate rating. It is based mostly
on aging of the winding insulation. Loading of transformers
larger than 100 MVA may be limited by factors other than insulation
aging such as stray flux etc. When it is known that such
limitations do not exist and insulation aging rather than oil
temperature, gassing, tank heating. etc is the controlling factor,
this guide may be used. This guide may also be used for askarel
filled transformers.
Recommendations for transformers with an insulation system which conforms to the 65 °C , those rated at an average winding temperature rise of 65 °C and a hottestepot temperature rise of 80 °C, are contained in Section 4 of this guide. Recom¬mendations for transformers with an insulation system which conforms to the 55 °C , those rated at an average winding temperature rise of 55 °C and a hottestspot temperature rise of 65 °C, are contained in Section 5 of this guide.
The method used for computer calculation of the Capability Tables for Normal and Moderate Sacrifice of Life in Section 4 and Section 5 of this guide and examples for developing them by hand calculations are contained in Section 6 and Section 7
1The numbers in brackets correspond to the refer¬ences listed in Section 2 of this guide.
Recommendations for transformers with an insulation system which conforms to the 65 °C , those rated at an average winding temperature rise of 65 °C and a hottestepot temperature rise of 80 °C, are contained in Section 4 of this guide. Recom¬mendations for transformers with an insulation system which conforms to the 55 °C , those rated at an average winding temperature rise of 55 °C and a hottestspot temperature rise of 65 °C, are contained in Section 5 of this guide.
The method used for computer calculation of the Capability Tables for Normal and Moderate Sacrifice of Life in Section 4 and Section 5 of this guide and examples for developing them by hand calculations are contained in Section 6 and Section 7
1The numbers in brackets correspond to the refer¬ences listed in Section 2 of this guide.