IEEE C57.13 1978

$26.54

IEEE Standard Requirements for Instrument Transformers

Published By	Publication Date	Number of Pages
IEEE	1978	66

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Description

New IEEE Standard – Inactive – Superseded. Superseded. Electrical, dimensional, and mechanical characteristics are covered, taking into consideration certain safety features, for current and inductively coupled voltage transformers of types generally used in the measurement of electricity and the control of equipment assoicated with the generation, transmission, and distribution of alternating current. The aim is to provide a basis for performance, interchangeability, and safety of equipment covered and to assist in the proper selection of such equipment. Accuracy classes for metering service are provided. The test code covers measurment and calculation of radio and phase angle, demagnetization, impedance and excitation measurements, polarity determination, resistance measurements, short-time characteristics, temperature rise tests, dielectric tests, and measurment of open-circuit voltage of current transformers.

PDF Catalog

PDF Pages	PDF Title
2	Typical Primary Connections for Voltage Transformers
11	1 Scope 2 Definitions
13	3 References 4 General Requirements 4.1 Service Conditions
14	Effect of Air Density on Sparkover Voltage 4.3 Frequency Temperature on Permissible Loading 1000 m (3300 ft)
15	Instrument Transformer Creepage Distance and Wet Tests 55 “C Rise Current Transformer Basic Loading Characteristics
16	Basic Impulse Insulation Levels and Dielectric Tests
17	with the Same Dielectric Test Requirements as Power Circuit Breakers
18	4.6 Temperature Rise 4.8 Construction Limits of Temperature Rise
20	5 Accuracy Classes for Metering Service Basis for Accuracy Classes Metered Load
21	Standard Accuracy Classes Standard Accuracy Classes 6 Current Transformers Terms in Which Ratings Shall be Expressed 6.2 Standard Burdens Assignment of Accuracy Ratings for Metering Service Accuracy Classes for Relaying Factor of Metered Load Lagging)
22	Limits of Accuracy Classes for Current Transformers for Metering Service Basic Impulse Insulation Levels for Current Transformers
23	Limits of Accuracy Classes for Voltage Transformers for Metering Service the Same Dielectric Test Requirements as Power Circuit Breakers
24	Ratings for Current Transformers with One or Two Ratios Current Transformer Ratings Multi-Ratio Type
25	Standard Burdens for Current Transformers with 5 A Secondaries
26	Ambient Air Temperature Short-Time Current Ratings Secondary Winding Induced Voltages 6.8 Nameplates 6.9 Terminals 6.10 Application Data
27	Typical Excitation Curves for Multi-ratio C Class Current Transformers
28	6.11 Routine Accuracy Tests 7 Voltage Transformers Terms in Which Ratings Shall be Expressed 7.2 Standard Burdens Assignment of Accuracy Ratings Thermal Burden Ratings Typical Overcurrent Ratio Curve
30	7.5 Nameplates 7.6 Terminals 7.7 Short-circuit Capability Ratings and Characteristics of Group 1 Voltage Transformers
31	7.8 Application Data Induced Potential Test Ratings and Characteristics of Group 2 Voltage Transformers
32	7.10 Routine Accuracy Test 8 Test Code Ratings and Characteristics of Group 3 Voltage Transformers
33	(Figs 6B and 6D) Ratings and Characteristics of Group 5 Outdoor Voltage Transformers
34	Measurement and Calculation of Ratio and Phase Angle Standard Burdens for Voltage Transformers
37	Current Transformer Accuracy Test with Compensated Current Comparator Current Transformer Accuracy Test with Composite Current Comparator
39	and Operational Amplifier Standard Current Transformer
40	Accuracy Test with Direct-Null Network
41	Comparison Network)
43	Accuracy Test with Current Comparator-Capacitance Ratio Method
44	Accuracy Test with Resistance Divider Method (Direct-Null Network) (Direct-Null Network)
45	Voltage Transformer Accuracy Test with Comparative-Null Method
46	Turns Base Phasor Diagram of Fig
48	8.2 Demagnetization Method 1: Circuit for Demagnetizing Current Transformers
49	Impedance and Excitation Measurements Method 2: Circuit for Demagnetizing Current Transformers
50	Circuit for Measuring Impedance: Three-Voltmeter Method
51	Circuit for Measuring Impedance: Wattmeter Voltmeter Ammeter Method Circuit for Measuring Excitation Current and Loss
52	8.4 Polarity Polarity by Inductive Kick
53	8.5 Resistance Measurements Known Polarity Known Polarity Polarity by Comparison of Winding Voltages
54	Four-Terminal Network for Resistance Measurement
55	8.6 Short-circuit Characteristics
57	Temperature Rise Tests
59	8.8 Dielectric Tests
60	Full Voltage Duration for Induced Potential Tests
62	Measurement of Open-circuit Voltage of Current Transformers Measurement of Open-circuit Voltage of Current Transformers
63	9 Bibliography