IEEE DRAFT C57.12.90 : D5.1 98
Superseded
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DRAFT STANDARD TEST CODE FOR LIQUID-IMMERSED DISTRIBUTION, POWER, AND REGULATING TRANSFORMERS
12-30-1999
01-12-2013
CLAUSE
1 Overview
2 References
3 Definitions
4 General
4.1 Type of tests
4.2 Test requirements
4.3 Test sequence
4.4 Instrumentation
5 Resistance measurements
5.1 Determination of cold temperature
5.2 Conversion of resistance measurements
5.3 Resistance measurement methods
6 Polarity and phase-relation tests
6.1 Subtractive and additive polarity
6.2 Polarity tests: single-phase transformers
6.3 Polarity and phase-relation tests: poly-phase transformers
7 Ratio tests
7.1 General
7.2 Tolerances for ratio
7.3 Ratio test methods
8 No-load losses and excitation tests
8.1 General
8.2 No-load loss test
8.3 Waveform correction of no-load losses
8.4 Temperature correction of no-load losses
8.5 Determination of excitation (no-load) current
9 Load losses and impedance voltage
9.1 General
9.2 Factors affecting the values of load losses and
impedance voltage
9.3 Test for measuring load losses and impedance voltage
9.4 Calculation of load losses and impedance voltage from
test data
9.5 Zero-sequence impedance
10 Dielectric tests
10.1 General
10.2 Switching impulse test procedure
10.3 Lightning impulse test procedure
10.4 Routine impulse test for distribution transformers
10.5 Low-frequency tests
10.6 Applied voltage tests
10.7 Induced voltage tests for distribution and class I
power transformers
10.8 Induced voltage test for class II power transformers
10.9 Partial discharge measurement
10.10 Insulation power factor tests
10.11 Insulation resistance test
11 Temperature rise
11.1 Ambient temperature measurement
11.2 Liquid rise
11.3 Average winding temperature-rise measurement
11.4 Other temperature measurements
11.5 Test methods
11.6 Corrections of temperature rises for difference in altitude
12 Short circuit tests
12.1 Scope
12.2 Test connections
12.3 Test requirements
12.4 Test procedure
12.5 Proof of satisfactory performance
13 Audible sound emission
13.1 General
13.2 Instrumentation
13.3 Test conditions
13.4 Microphone positions
13.5 Sound power rating
13.6 Presentation or results
14 Calculated data
14.1 Reference temperature
14.2 Losses and excitation current
14.3 Efficiency
14.4 Voltage regulation and constant-voltage transformer
15 Certified test data
16 Bibliography
Gives procedure for performing tests that are specified in IEEE C57.12.00 - 1993 and other standards that apply to liquid-immersed distribution, power and regulating transformers. Intended to be used as a basis for performance, safety and the proper testing of such transformers. Applies to all liquid-immersed transformers except instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty, grounding and mine transformers.
| DocumentType |
Draft
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| PublisherName |
Institute of Electrical & Electronics Engineers
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| Status |
Superseded
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| SupersededBy |
| IEEE C57.12.10-2010 | TRANSFORMERS - 230 KV AND BELOW 833/958 THROUGH 8333/10 417 KVA, SINGLE-PHASE, AND 750/862 THROUGH 60 000/80 000/100 000 KVA, THREE-PHASE WITHOUT LOAD TAP CHANGING; AND 3750/4687 THROUGH 60 000/80 000/100 000 KVA WITH LOAD TAP CHANGING - SAFETY REQUIREMENT |
| ANSI C57.12.40 : 2011 | AMERICAN NATIONAL STANDARD FOR SECONDARY NETWORK TRANSFORMERS - SUBWAY AND VAULT TYPES (LIQUID IMMERSED) - REQUIREMENTS |
| IEEE C57.12.20-2011 | TRANSFORMERS - STANDARD FOR OVERHEAD TYPE DISTRIBUTION TRANSFORMERS, 500 KVA AND SMALLER: HIGH VOLTAGE, 34500 VOLTS AND BELOW: LOW VOLTAGE, 7970/13800Y VOLTS AND BELOW |
| ANSI C57.12.24 : 2009 | TRANSFORMERS - UNDERGROUND-TYPE THREE-PHASE DISTRIBUTION TRANSFORMERS, 2500 KVA AND SMALLER; HIGH VOLTAGE, 34 500 GRDY/19 920 VOLTS AND BELOW; LOW VOLTAGE, 480 VOLTS AND BELOW - REQUIREMENTS |
| ANSI S1.4 : 1983 | SPECIFICATION FOR SOUND LEVEL METERS |
| ANSI S1.11 : 2014 | SPECIFICATION FOR OCTAVE-BAND AND FRACTIONAL-OCTAVE-BAND ANALOG AND DIGITAL FILTERS |
| ANSI C57.12.25 : 1990 | 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 |
| IEEE C57.19.01-2000 | IEEE Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings |
| IEEE C57.12.00-2015 | IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers |
| IEEE C57.19.00 : 2004 | GENERAL REQUIREMENTS AND TEST PROCEDURE FOR POWER APPARATUS BUSHINGS |
| IEEE 4-2013 | IEEE Standard for High-Voltage Testing Techniques |
| IEEE C57.98-2011 | IEEE Guide for Transformer Impulse Tests |
| IEEE C57.92-1981 | IEEE Guide for Loading Mineral-Oil-Immersed Power Transformers Up to and Including 100 MVA with 55 C or 65 C Average Winding Rise |
| IEEE C63.2-2009 | American National Standard for Electromagnetic Noise and Field Strength Instrumentation, 10 Hz to 40 GHz Specifications |
| IEEE C57.12.70-2011 | IEEE Standard for Standard Terminal Markings and Connections for Distribution and Power Transformers |
| IEEE C57.12.23-2009 | IEEE Standard for Submersible Single-Phase Transformers: 167 kVA and Smaller; High Voltage 25 000 V and Below; Low Voltage 600 V and Below |
| IEEE C57.106-2006 | IEEE Guide for Acceptance and Maintenance of Insulating Oil in Equipment |
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