IEEE C57.12.90-2010 pdf free.IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers.
IEEE C57.12.90 describes methods for performing tests specified in IEEE Std C57.12.00″ and other standards applicable to liquid-immersed distribution, power, and regulating transformers.’ It is intended for use as a basis for performance and proper testing of such transformers.
This standard applies to all liquid-immersed transformers, except instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers,grounding transformers, and mine transformers.
Transformer requirements and specific test criteria are not a part of this standard, but they are contained in appropriate standards, such as IEEE Std C57.12.00, ANSI C57.12.10 [B1],2 IEEE Std C57.12.20″，and IEEE Std C57.12.40″M [B10], or in user specifications.
1.2 Purpose
The purpose of this standard is to provide test procedure inftwmation for tests specilied in IEEE Std (‘57.12.00 and other standards applicable to liquid-immersed distribution. power. and regulating transformers. It is intended for use as a basis for performance and proper testing of such transforTners.
1.3 Word usage
When this standard is used on a mandatory basis, the word shall indicates mandatory requirements. The words should or nav refer to matters that are recommended or permitted but not mandatory.
2. Normative references
The following referenced documents are indispensable for the application of this document (i.e.. they must be understood and used, so each referenced document is cited in text and its relationship to this document is explained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendmerns or corrigenda) applies.
ANSI C57. 12.25, American National Standard for Transformers—Pad-Mounted. Compartmental-Type, Self-Cooled, Single-Phase Distribution Transformers with Separable Insulated High-Voltage Connectors:
high-Voltage. 34 500 GrdY/19 920 Volts and Below: Low-Voltage. 240/120 Volts: 167 kVA and Smaller—Requirements.
ANSI C84. 1, American National Standard for Electric Power Systems and Equipment—Voltage Ratings
(60 Hertz).
ANSI SI .4, American National Standard 11w Sound Level Meters.
ANSI SI.11, American National Standard fir Octave Band and Fractional-Octave-Band Analog and Digital Filters.IEEE C57.12.90 pdf free download.