IEEE C57.13.5 2009

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IEEE Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above

Published By	Publication Date	Number of Pages
IEEE	2009	81

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Description

Revision Standard – Active. Single-phase instrument transformers of a nominal system voltage of 115 kV and above with capacitive insulation system for line-to-ground connection and for both indoor and outdoor application are discussed in this standard. This standard is intended for use as a supplement to IEEE Std C57.13-2008 and as a basis for performance and safety of equipment. It also describes test sequences, criteria, methods and documentation for the test.

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PDF Pages	PDF Title
1	IEEE Std C57.13.5™-2009, Front cover
3	Title page
6	Introduction Notice to users Laws and regulations Copyrights
7	Updating of IEEE documents Errata Interpretations Patents Participants
10	Contents
13	IMPORTANT NOTICE 1. Overview 1.1 Scope 1.1 Purpose
14	2. Normative references 3. Definitions
15	4. General 4.1 Insulation requirements 4.1.1 Voltage ratings, dielectric test levels, and prescribed extinction voltages
17	4.1.2 Capacitance and dissipation factor requirements 4.1.3 Creepage distance requirements
18	4.1.4 External radio influence voltage (RIV) requirements
19	4.1.5 Routine partial discharge test 4.1.6 Insulation resistance requirements
20	4.1.7 Power frequency voltage withstand test 4.1.8 Duration of power frequency voltage withstand test for test frequency higher than 120 Hz 4.2 Mineral oil requirements 4.3 Requirements for accuracy and accuracy calibration systems
21	4.4 Mechanical performance requirements 4.4.1 Sealing tests 4.4.1.1 Oil-immersed instrument transformers 4.4.1.2 Gas-filled instrument transformers
22	4.4.2 Mechanical strength of the transformer
23	4.5 Thermal performance requirements 4.6 Ground shield requirements 4.7 Dissolved gas and water content requirements for new oil-immersed transformers
24	4.8 Endurance capability for fast high voltage transient 4.9 Performance of internal arc protection 4.10 Identification of test sample in the type test report 4.11 Secondary short-circuit capability for voltage transformers 5. Test conditions
25	6. Classification of test 6.1 Routine tests and test sequences 6.1.1 Routine tests applicable to instrument transformers 6.1.2 Routine test applicable to current transformers 6.1.3 Routine test applicable to voltage transformers
26	6.1.3.1 Sequence of the routine tests
28	6.2 Type tests and test sequences 6.2.1 Type tests applicable to instrument transformers 6.2.2 Type test applicable to current transformers 6.2.3 Sequence of the type tests
31	6.2.4 Maximum number of samples used for the type tests 6.3 Special tests 7. Routine test procedures (applicable to instrument transformers) 7.1 Verification of terminal markings and polarity 7.2 Capacitance and dissipation factor test
32	7.3 Applied voltage test on secondary windings 7.4 Insulation resistance test on windings 7.5 Lightning impulse voltage test on the primary winding 7.5.1 Determination of sample size 7.5.2 Test procedure and criteria
33	7.6 Power frequency voltage withstand test 7.7 Partial discharge test
34	7.8 Dissolved gas and water content analysis for oil-immersed transformers (of a nominal system voltage of 345 kV and above) 7.9 Sealing test 7.9.1 Sealing test for oil-immersed transformers 7.9.2 Sealing test for gas-filled transformers
35	7.10 Ground shield check 7.11 Tests on the mineral oil 8. Routine test procedures (applicable to current transformers) 8.1 Inter-turn over-voltage test 8.1.1 Procedure A
36	8.1.2 Procedure B 8.2 Accuracy test for the metering rated current transformers
37	8.3 Resistance measurement of relaying rated secondary windings 8.4 Performance characteristics of relaying rated current transformers
38	9. Routine test procedures (applicable to voltage transformers) 9.1 Applied voltage test on the neutral terminal 9.2 Accuracy test 9.3 Excitation characteristics with respect to rated voltage factor
39	9.4 Resistance measurement of windings 10. Type test procedures (applicable to instrument transformers) 10.1 Dissolved gas and water content anaylsis 10.2 Mechanical test 10.2.1 Transformers for pedestal mounting
40	10.2.2 Transformers for suspension mounting 10.3 Lightning impulse voltage test on the primary winding
41	10.4 Switching impulse voltage test on the primary winding—wet 10.5 External radio influence voltage (RIV) test
42	10.6 Power frequency voltage withstand test —wet 10.7 Power frequency voltage withstand and partial discharge test—dry
43	10.8 Temperature rise test 10.8.1 Temperature rise test for current transformers at the continuous thermal current rating RF 10.8.2 Effects of the dielectric losses on temperature rise for current transformers
44	10.8.3 Temperature rise test for voltage transformers 10.9 Short-time mechanical and thermal rating test
45	10.9.1 Short-time mechanical test for current transformers 10.9.2 Short-time thermal rating test for current transformers 10.9.3 Short-time mechanical and thermal rating test for voltage transformers
46	10.9.4 Short-time thermal rating calculations 10.9.5 Criteria for the short-time mechanical and thermal rating test 10.10 Accuracy performance test 10.11 Creepage distance measurement
47	10.12 Sealing system test for gas-filled instrument transformers 11. Type test procedure (applicable to current transformers) 11.1 Secondary open-circuit voltage withstand test
48	12. Special test procedures 12.1 Endurance chopped wave test 12.2 Internal arc test
49	12.2.1 Requirement of the fuse element installation 12.2.2 Test conditions 12.2.3 Test Requirements 12.3 Seismic qualification
50	13. Identification of test sample in the type test report 13.1 Document package related to transformer type 13.2 Requirements of the document package
52	Annex A (normative) Test code
56	Annex B (informative) Dielectric test performed at an altitude of 1000 m or less for instrument transformers designed for installation at altitudes greater than 1000 m
58	Annex C (informative) Dielectric tests, oil sampling, and other related measurements in the field
59	Annex D (informative) Internal arc protection for instrument transformers
60	Annex E (normative) Validity of type test reports and guidance for reviewing the design comparison report for the modified design
62	Annex F (informative) Rated voltage factor
63	Annex G (normative) Current transformers used for the detection of unbalance current of capacitor banks
79	Annex H (informative) Current transformers having transient performance requirements
80	Annex I (informative) Electrical endurance test, explanatory note
81	Annex J (informative) Bibliography

Additional information

Standard Title	IEEE Standard of Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above
Published Code	IEEE
Publication Date	2009
Pages Count	81

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