IEC 60186:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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14-04-2004
01-01-1987
FOREWORD
PREFACE
CHAPTER I: GENERAL REQUIREMENTS APPLICABLE TO ALL VOLTAGE
TRANSFORMERS
SECTION ONE - GENERAL
Clause
1 Scope
2 General requirements
3 Service conditions
4 Definitions
SECTION TWO - RATING AND PERFORMANCE REQUIREMENTS APPLICABLE TO
ALL VOLTAGE TRANSFORMERS
5 Standard values of rated voltages
6 Standard values of rated output
7 Standard values of rated voltage factor
8 Limits of temperature rise
9 Insulation requirements
9a Short-circuit withstand capability
SECTION THREE - TESTS - GENERAL
10 Classification of tests
SECTION FOUR - TYPE TESTS
11 Temperature-rise test
12 Short-circuit withstand capability test
13 Impulse tests on primary winding
14 Wet test for outdoor type transformers
SECTION FIVE - ROUTING TESTS
15 Verification of terminal markings
16 Power-frequency tests on primary windings and measurement of
partial discharges
17 Power-frequency tests between sections and on secondary
windings
SECTION SIX - SPECIAL TESTS
18 Chopped lightning-impulse test on primary windings
SECTION SEVEN - MARKING
19 Rating plate markings
SECTION EIGHT - TERMINAL MARKINGS
20 General
21 Markings
CHAPTER II: ADDITIONAL REQUIREMENTS FOR SINGLE-PHASE MEASURING
VOLTAGE TRANSFORMERS
SECTION NINE - GENERAL
22 Scope
23 Definitions
SECTION TEN - ACCURACY REQUIREMENTS
24 Accuracy class designation
25 Limits of voltage error and phase displacement
SECTION ELEVEN - TESTS FOR ACCURACY
26 Type tests
26a Routing tests
SECTION TWELVE - MARKING
27 Marking of the rating plate of a measuring voltage
transformer
SECTION THIRTEEN - GENERAL
28 Scope
29 Definitions
SECTION FOURTEEN - ACCURACY REQUIREMENTS
30 Accuracy class designation
31 Limits of voltage error and phase displacement
SECTION FIFTEEN - REQUIREMENTS FOR SECONDARY WINDINGS INTENDED
TO PRODUCE A RESIDUAL VOLTAGE
32 Rated secondary voltages
33 Rated output
34 Accuracy class
SECTION SIXTEEN - TESTS FOR ACCURACY
35 Type tests
36 Routine tests
SECTION SEVENTEEN - MARKING
37 Marking of the rating plate of a protective voltage
transformer
CHAPTER IV: ADDITIONAL REQUIREMENTS FOR CAPACITOR VOLTAGE
TRANSFORMERS
SECTION EIGHTEEN - GENERAL
38 Scope
39 General requirements
40 Definitions
SECTION NINETEEN - RATING AND PERFORMANCE REQUIREMENTS
41 Standard reference range of frequency
42 Standard values of rated output
SECTION TWENTY - ACCURACY REQUIREMENTS
43 Standard accuracy classes
44 Limits of voltage error and phase displacement
SECTION TWENTY-ONE - EFFECTS OF TRANSIENTS
45 Ferro-resonance
46 Transient response
SECTION TWENTY-TWO - COUPLING DEVICE
47 Carrier-frequency coupling device
SECTION TWENTY-THREE - TESTS
48 General
SECTION TWENTY-FOUR - TYPE TESTS
49 Temperature-rise test
50 Impulse tests
51 Ferro-resonance tests
52 Transient response tests
53 Tests for accuracy
SECTION TWENTY-FIVE - ROUTING TESTS
54 Power-frequency tests
55 Tests for accuracy
SECTION TWENTY-SIX - MARKING
56 Marking of the rating plate of a capacitor voltage
transformer
FIGURES
APPENDIX A - Typical and equivalent diagrams for a capacitor
voltage transformer
APPENDIX B - Main condition allowing tests on the equivalent
circuit
APPENDIX C - Burdens for the transient response test
APPENDIX D - Use of the equivalent circuit for the routing tests
for accuracy
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