IEEE 389 1990

$52.54

IEEE Recommended Practice for Testing Electronic Transformers and Inductors

Published By	Publication Date	Number of Pages
IEEE	1990	64

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Description

Revision Standard – Inactive – Superseded. A number of tests are presented for use in determining the significant parameters and performance characteristics of electronics transformers and inductors. These tests are designed primarily for transformers and inductors used in all types of electronics applications, but they may apply to the other types of transformers of large apparent-power rating used in the electric power utility industry. Some of the tests are intended for qualifying a product for a specific application, while others are test practices used widely for manufacturing and customer acceptance testing. A guide for particular application categories is included.

PDF Catalog

PDF Pages	PDF Title
5	Measurement
10	1 Scope Recommended Practice Is Applicable 1.2 References
11	2 Definitions How to Specify Electronic Transformers Insulation and Corona Tests 4.1 General 4.2 Electric Strength Test (Also Known as Hi-Pot Test)
12	Typical High-Potential Test Showing Sec 1 Under Test Typical High-Potential Test of Inductor
13	Groups
15	Induced Potential Test Fig 3 Block Diagram of Induced Voltage Surge Test
17	4.4 Corona Tests Resistance Tests 5.1 General
18	Typical Circuit for Corona Measurement Circuit Typical Circuit for Corona Measurement Circuit
19	5.2 Resistance Values Under 1 Ohm Measurement of Low Resistance Kelvin Double-Bridge Method of Measuring Low Resistance
20	Resistance Values from 1 Ohm to Many Kilohms Ammeter and Voltmeter Method of Resistance Measurement
21	Measurement of Resistance by Substitution
22	Resistance Values from Under 1 Ohm to Many Kilohms Principle of Series Ohmmeter Digital Ohmmeter Method of Resistance Measurements
23	Loss Measurements 6.1 No-Load Loss
24	Triangular Flux-Density Variation in Transformer Core Suggested Values for Specifying No-Load Tests
25	Test Circuit for Transformer No-Load Losses
26	Excitation Apparent-Power Measurements 6.3 Stray-Load Losses
27	Short-circuit Power Test Simplified Diagram for Short-circuit Power Test
28	Efficiency and Power Factor Ratio of Transformation 7.1 General
29	7.2 Measurement Methods
30	7.3 Impedance Unbalance Resistive Ratio Bridge Bridge with Ratio Transformer Ratio of Transformation from Voltage Measurements
31	7.4 Balance Tests Bridge Circuit for Measurement of Impedance Unbalance
32	Test Circuits for Balance Tests
33	7.5 Polarity Tests 8 Transformer Capacitance 8.1 General 8.2 Interwinding Capacitance Polarity Test Using Voltage Measurements
34	Measuring Techniques for Transformer Capacitance Simplified Circuit for Transformer Capacitance Measurement Test Circuit for Interwinding Capacitance Measurement
35	8.3 Distributed Capacitance 8.4 Bridge Methods 9 Inductance Measurements by Impedance Bridge Method 9.1 General Test Circuit for Distributed Capacitance Measurement Circuit for Bridge Method
36	Method of Measurement
37	Typical Bridge Circuits for Inductance Measurements
39	10 Transformer Response Measurements Transformer Frequency Response Test Circuit for Frequency Response Measurements
40	Test Circuit for Frequency Response Measurements with DC CurrenW
41	Transformer Pulse Response Alternate Method for Frequency Response Measurements Measurement of Transformer Loss
42	Test Circuit for Low-Level Pulse Response
43	Noise Tests Test Conditions for Audible Noise Measurement of Audible Noise 11.3 EM1 Noise Terminated Impedance Measurements 12.1 General Sound-Level Corrections for Noise Tests
44	12.2 Return-Loss Method Return-Loss Bridges
45	Return-Loss Measurement
46	Temperature Rise Tests 13.1 Test Methods Determination of Resistance at Zero Time
47	14 Self-Resonance 14.1 General 14.2 Measurement Measurement of Self-Resonance
48	Voltage-Time Product Rating 15.1 General Product Test Method Waveforms for Voltage-Time Product Test Method
49	16 Shielding 16.1 Electronic Shielding Test Circuit for Rectangular Pulse Excitation Basic Electrostatic Symbol Shielded Single Winding Core Floating Multiple Shielded Single Winding Core Terminal (Lead) Provided
50	Shielded Two.Winding Secondary Core Grounded Shielded Group of Windings Core Floating Multiple Shielded Group of Windings Core Terminal (Lead) Provided Combination of Shielding Conditions Typical Two-Winding Shielded Transformer Simplified Representation of Fig
51	16.2 Magnetic Shielding Indirect Measuring Method for Electronic Shielding
52	Measurement of Quality Factor Q 17.1 Definition 17.2 Methods 17.3 Bridge Measurements
53	17.4 &-Meter Measurements 17.5 Transmission Method Circuit Magnification for Basic Method
54	Damped Oscillation Method Transmission Method
55	Damped Oscillation Method
56	Oscilloscope Sweep for Damped Oscillation Method
57	Common-Mode Rejection Test Inrush-Current Evaluation and Measurement 19.1 Measurement 19.2 Calculation Common-Mode Rejection Test
58	19.3 Other Considerations Current Transformer Test 20.1 General
59	Ratio and Phase Angle 21 Bibliography Test Circuit for Current Transformers
60	Inductors and Transformers General True rms Measurements
61	Flux Voltage Measurements Applications High-Potential Dielectric Testing General Leakage Current
62	Corona Test Equipment Requirement
63	An AC Magnetic Field Pickup Probe