BS EN 60214-1:2014
$215.11
Tap-changers – Performance requirements and test methods
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 80 |
This part of IEC 60214 applies to on-load tap-changers of both resistor and reactor types, de-energized tap-changers, and their motor-drive mechanisms.
It applies mainly to tap-changers immersed in mineral insulating oil according to IEC 60296 but may also be used for tap-changers with air or gas insulation or immersed in other insulating liquids insofar as conditions are applicable.
It applies mainly to tap-changers with arcing contacts but may also be used for arcing-free on-load tap-changers (such as electronic switching) insofar as conditions are applicable.
This part of IEC 60214 applies to power and distribution transformers of all types and also to reactors.
It does not apply to transformers and reactors mounted on railway rolling stock.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | CONTENTS |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions |
| 17 | 4 Service conditions 4.1 Temperature of tap-changer environment |
| 18 | 4.2 Temperature of motor-drive mechanism environment 4.3 Overload conditions 5 Requirements for on-load tap-changers 5.1 General requirements 5.1.1 Rating Tables Table 1 – Temperature of tap-changer environment |
| 19 | 5.1.2 Compartments for diverter and selector switches 5.1.3 Liquid-level gauges and gas monitoring devices 5.1.4 Safety requirements for protection against internal failure |
| 20 | 5.1.5 Limiting devices for the protection against transient overvoltages 5.1.6 Change-over selector recovery voltages 5.1.7 Leakage inductance in coarse fine regulation arrangements 5.2 Type tests 5.2.1 General |
| 21 | 5.2.2 Temperature rise of contacts Table 2 – Contact temperature-rise limits for on-load tap-changers |
| 22 | 5.2.3 Switching tests |
| 27 | 5.2.4 Short-circuit current test Figures Figure 1 – Short-circuit test current (r.m.s. value) as a multiple of the maximum rated through-current (on-load tap-changer) |
| 28 | 5.2.5 Transition impedance test |
| 29 | 5.2.6 Mechanical tests |
| 31 | 5.2.7 Tightness test |
| 32 | 5.2.8 Dielectric tests Table 3 – Test voltage levels for on-load tap-changers |
| 36 | Figure 2 – Time sequence for the application of test voltage (on-load tap-changer) |
| 37 | 5.2.9 Type-test certificate 5.3 Routine tests 5.3.1 General 5.3.2 Mechanical test 5.3.3 Sequence test 5.3.4 Auxiliary circuits insulation test 5.3.5 Pressure and vacuum tests 6 Requirements for motor-drive mechanisms for on-load tap-changers 6.1 General requirements 6.1.1 Compliance of component parts |
| 38 | 6.1.2 Permissible variation of auxiliary supply 6.1.3 Step-by-step control 6.1.4 Tap position indicator 6.1.5 Tap-change in progress indication 6.1.6 Limiting devices 6.1.7 Parallel control devices 6.1.8 Direction of rotation protection 6.1.9 Overcurrent blocking device |
| 39 | 6.1.10 Restarting device 6.1.11 Operation counter 6.1.12 Manual operation of the motor-drive mechanism 6.1.13 Motor-drive cubicle 6.1.14 Protective device against running-through 6.1.15 Protection against access to hazardous parts 6.2 Type tests 6.2.1 Mechanical load test |
| 40 | 6.2.2 Overrun test 6.2.3 Degree of protection of motor-drive cubicle 6.3 Routine tests 6.3.1 Mechanical tests 6.3.2 Auxiliary circuits insulation test 7 Requirements for de-energized tap-changers 7.1 General requirements 7.1.1 Rated characteristics |
| 41 | 7.1.2 Types 7.1.3 Handles and drives 7.1.4 Glands 7.1.5 Interlocks 7.1.6 Mechanical end stops |
| 42 | 7.2 Type tests 7.2.1 General 7.2.2 Temperature rise of contacts Table 4 – Contact temperature-rise limits for de-energized tap-changers |
| 43 | 7.2.3 Short-circuit current test 7.2.4 Mechanical tests Figure 3 – Short-circuit test current (r.m.s. value) as a multiple of the maximum rated through-current (de-energized tap-changer) |
| 44 | 7.2.5 Dielectric tests |
| 45 | Table 5 – Test voltage levels for de-energized tap-changers |
| 48 | Figure 4 – Time sequence for the application of test voltage (de-energized tap-changer) |
| 49 | 7.2.6 Type test certificate 7.3 Routine tests 7.3.1 Mechanical tests 7.3.2 Pressure and vacuum tests 8 Requirements for motor-drive mechanisms for de-energized tap-changers 8.1 General requirements 8.1.1 General 8.1.2 Compliance of component parts 8.1.3 Permissible variation of auxiliary supply 8.1.4 Tap position indicator |
| 50 | 8.1.5 Limiting devices 8.1.6 Operation counter 8.1.7 Manual operation of the motor-drive mechanism 8.1.8 Motor-drive cubicle 8.1.9 Protection against access to hazardous parts 8.2 Type tests 8.2.1 Mechanical load test |
| 51 | 8.2.2 Overrun test 8.2.3 Degree of protection of motor-drive cubicle 8.3 Routine tests 8.3.1 Mechanical tests 8.3.2 Auxiliary circuits insulation test 9 Nameplate 9.1 Tap-changers (on-load and de-energized) |
| 52 | 9.2 Motor-drive mechanisms 10 De-energized tap-changer warning label Figure 5 – Warning label (example) |
| 53 | 11 Manufacturers operating instructions |
| 54 | Annex A (normative)Supplementary information on switching dutyon main and transition contactsrelating to resistor type tap-changers |
| 55 | Figure A.1 – Examples of current and voltage vectors for resistor type tap-changers |
| 56 | Table A.1 – Duty of main and transition contacts for resistor type tap-changers (non-vacuum type) |
| 57 | Table A.2 – Effect of load power-factor on circuit-breaking duty for resistor type tap-changers (non-vacuum type) |
| 58 | Table A.3 – Duty of main and transition contacts for resistor type tap-changers (vacuum type) (1 of 2) |
| 60 | Annex B (normative)Supplementary information on switching dutyrelating to reactor type tap-changers B.1 Additional test parameters B.1.1 Service duty test B.1.2 Breaking capacity test B.2 Duty of switching contacts |
| 61 | Figure B.1 – Operating sequence of reactor type tap-changerswith selector switch Table B.1 – Duty of switching contacts for reactor type tap-changerswith selector switch – Switching direction from P1 to P5 |
| 62 | Figure B.2 – Current and voltage vectors for reactor type tap-changers with selector switch |
| 63 | Figure B.3 – Operating sequence of reactor type tap-changers with selector switch and equalizer windings Table B.2 – Duty of switching contacts for reactor type tap-changers with selector switch and equalizer windings – Switching direction from P1 to P5 |
| 64 | Figure B.4 – Current and voltage vectors for reactor type tap-changers with selector switch and equalizer windings |
| 65 | Table B.3 – Duty of switching contacts for reactor type tap-changers with diverter switch and tap selector – Switching direction from P1 to P7 |
| 66 | Figure B.5 – Operating sequence of a reactor type tap-changer with diverter switch and tap selector |
| 67 | Figure B.6 – Current and voltage vectors for reactor type tap-changers with diverter switch and tap selector |
| 68 | Table B.4 – Duty of switching contacts for reactor type tap-changers with vacuum interrupter and tap selector – Switching direction from P1 to P11 |
| 69 | Figure B.7 – Operating sequence of a reactor type tap-changer with vacuum interrupter and tap selector |
| 70 | Figure B.8 – Current and voltage vectors for reactor type tap-changerswith vacuum interrupter and tap selector |
| 71 | Annex C (normative)Method for determining the equivalent temperatureof the transition resistor using power pulse current |
| 72 | Annex D (informative)Simulated a.c. circuits for service duty and breaking capacity tests D.1 General D.2 Transformer method Figure D.1 – Simulated test circuit – Transformer method |
| 73 | D.3 Resistance method Figure D.2 – Simulated test circuit – Resistance method |
| 75 | Annex E (informative)Example of a synthetic test circuit for service duty testof vacuum type tap-changers E.1 Definitions with relevance to the synthetic test circuit E.1.1 Synthetic test circuit E.1.2 Simulated a.c. test circuit E.1.3 Pre-arc E.1.4 Making voltage E.2 Example for the test setup of a synthetic test circuit Figure E.1 – Synthetic test circuit for service duty test of vacuum type tap-changers |
| 76 | E.3 Example for the breaking/making condition during a switching operation Figure E.2 – Currents of the synthetic test circuit Figure E.3 – Example of the synthetic test for a switching operationwith equal voltages for breaking and making duty |
| 78 | Bibliography |
