IEEE C57.13.5-2019

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

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IEEE	2019

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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 C57.13-2016 and as a basis for performance and safety of equipment. Test sequences, criteria, methods, and documentation for the test are also described.

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PDF Pages	PDF Title
1	IEEE Std C57.13.5™-2019 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
9	Introduction
10	Contents
12	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage
13	2. Normative references 3. Definitions
15	4. General 4.1 Insulation requirements
19	4.2 Mineral oil requirements 4.3 Requirements for accuracy and accuracy calibration systems 4.4 Mechanical performance requirements
21	4.5 Thermal performance requirements 4.6 Ground shield requirements 4.7 Dissolved gas and water content requirements for new oil-immersed transformers
22	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
23	4.12 Relaying current transformers having an anti-remanence gap 4.13 Gas filling pressure and gas monitoring for gas-filled instrument transformers 5. Test conditions
24	6. Classification of tests 6.1 Routine tests and test sequences
27	6.2 Type tests and test sequences
30	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 7.3 Applied voltage test on secondary windings
31	7.4 Insulation resistance test on windings 7.5 Lightning impulse voltage test on the primary winding
32	7.6 Power frequency voltage withstand test 7.7 Partial discharge test
33	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 7.10 Ground shield check
34	7.11 Tests on the mineral oil 7.12 Inspection and routine pressure test for enclosure of gas-filled instrument transformers 8. Routine test procedures (applicable to current transformers) 8.1 Inter-turn over-voltage test
35	8.2 Accuracy test for the metering rated current transformers 8.3 Resistance measurement of relaying rated secondary windings
36	8.4 Performance characteristics of relaying current transformers
37	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
38	9.4 Resistance measurement of windings 10. Type test procedures (applicable to instrument transformers) 10.1 Dissolved gas and water content analysis 10.2 Mechanical test
39	10.3 Lightning impulse voltage test on the primary winding
40	10.4 Switching impulse voltage test on the primary winding – wet
41	10.5 External radio influence voltage (RIV) test 10.6 Power frequency voltage withstand test – wet 10.7 Power frequency voltage withstand/partial discharge test – dry
42	10.8 Temperature rise test
44	10.9 Short-time mechanical and thermal rating test
45	10.10 Accuracy performance test 10.11 Creepage distance measurement
46	10.12 Leakage test at low temperature for gas-filled instrument transformers 10.13 Burst test on enclosure for gas-filled instrument transformers 11. Type test procedure (applicable to current transformers) 11.1 Secondary open-circuit voltage withstand test
47	12. Special test procedures 12.1 Endurance chopped wave test
48	12.2 Internal arc test
49	12.3 Seismic qualification 13. Identification of test sample in the type test report
50	13.1 Document package related to transformer type
51	Annex A (normative) Test code A.1 Temperature rise test
52	A.2 Leakage test at low temperature for gas-filled instrument transformers
53	A.3 Endurance chopped wave test
55	Annex B (normative) Validity of type test reports and guidance for reviewing the design comparison report for the modified design B.1 Validity of type test reports B.2 Guidance of reviewing the comparison report
57	Annex C (normative) Current transformers used for the detection of unbalance current of capacitor banks C.1 General C.2 Definition C.3 General requirements
63	C.4 Specific requirements
68	Annex D (normative) Gas tightness D.1 Specification D.2 Testing D.3 Cumulative test method and calibration procedure
72	D.4 Time between replenishments
73	Annex E (informative) Dielectric tests performed at an altitude of 1000 m or less for instrument transformers designed for installation at altitudes greater than 1000 m
74	Annex F (informative) Dielectric tests, oil sampling, and other related measurements in the field
75	Annex G (informative) Internal arc protection for instrument transformers
76	Annex H (informative) Rated voltage factor
77	Annex I (informative) Current transformers having transient performance requirements
78	Annex J (informative) Electrical endurance test, explanatory note
79	Annex K (informative) Bibliography
81	Back cover

Additional information

Standard Title	IEEE Standard for Performance and Test Requirements for Instrument Transformers of a Nominal System Voltage of 115 kV and Above
Published Code	IEEE
Publication Date	2019

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IEEE C57.13.5-2019

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