IEEE 389 : 1996

Table of Contents

Clause
1. Overview
    1.1 Scope
    1.2 Transformers and inductors
2. References
3. Definitions
4. How to specify electronics transformers
5. Insulation and corona tests
    5.1 General
    5.2 Electric strength test (hi-pot test)
    5.3 Induced potential test
    5.4 Corona tests
6. DC resistance tests
    6.1 General
    6.2 Resistance values under 1 omega - Kelvin
          double-bridge method
    6.3 Resistance values from 1 omega to many kilohms
    6.4 Digital ohmmeter - Resistance values from under
          1 omega to many kilohms
7. Loss measurements
    7.1 No-load loss
    7.2 Excitation apparent-power measurements
    7.3 Stray-load losses
    7.4 Short-circuit power-test
    7.5 Efficiency and power factor
8. Ratio of transformation
    8.1 General
    8.2 Measurement methods
    8.3 Impedance unbalance
    8.4 Balance tests
    8.5 Polarity tests
9. Transformer capacitance
    9.1 General
    9.2 Interwinding capacitance
    9.3 Distributed capacitance
    9.4 Bridge methods
10. Inductance measurements by impedance bridge method
    10.1 General
    10.2 Method of measurement
11. Transformer response measurements
    11.1 Transformer frequency response
    11.2 Transformer pulse response
12. Noise tests
    12.1 Test conditions for audible noise
    12.2 Measurement of audible noise
13. Terminated impedance measurements
    13.1 General
    13.2 Return-loss method
14. Temperature rise tests
    14.1 Test methods
    14.2 Notes on the technique of measurement
15. Self-resonance
    15.1 General
    15.2 Measurement
16. Voltage-time product rating
    16.1 General
    16.2 Recommended voltage-time product test methods
17. Shielding
    17.1 Electrostatic shielding
    17.2 Magnetic shielding
18. Measurement of quality factor Q
    18.1 Definition
    18.2 Methods
    18.3 Bridge measurements
    18.4 Q-Meter measurements
    18.5 Transmission method
    18.6 Damped oscillation method
19. Common-mode rejection test
20. Inrush-current evaluation and measurement
    20.1 Measurement
    20.2 Calculation
    20.3 Other considerations
21. Current transformer test
    21.1 General
    21.2 Recommended test procedure for
          current-transformation ratio and phase angle
22. Bibliography
ANNEX
Annex A (informative) Instrumentation for voltage and
          current measurements on inductors and
          transformers
Annex B (informative) AC High-potential dielectric
          testing
Annex C (informative) An ac magnetic field pickup probe

Abstract

Presents a number of tests for use in determining the significant parameters and performance characteristics of electronic transformers and inductors. Includes tests for electric strength, resistance, power loss, inductance, impedance, balance and transformation.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN
Supersedes	IEEE DRAFT 389 : 1995