IEEE 436 : 1991
IEEE 436 : 1991
CORONA (PARTIAL DISCHARGE) MEASUREMENTS ON ELECTRONICS TRANSFORMERS, GUIDE FOR MAKING
Institute of Electrical & Electronics Engineers
Table of Contents
1. Scope
2. Purpose
3. References
4. Definitions
5. Test Conditions
5.1 Application of the Guide
5.2 Conditions for Acceptable Corona Tests
5.2.1 Frequencies at Which Corona Measurements May Be
Performed
5.2.2 Effects of Voids in Solid Insulation
5.2.3 Corona Discharge Pulse Rise Time
5.2.4 Circuit Response
5.3 Signal-to-Noise Ratio
5.4 Discrimination Device Sensitivity
6. Apparatus
6.1 Test-Voltage Supply
6.1.1 Self-Excitation
6.2 Coupling Capacitor
6.3 Coupling Impedance
6.4 Corona Detector
6.4.1 Amplifier
6.4.2 Signal Readout Instrument(s)
6.5 Calibration Pulse Generator
6.6 Calibration Coupling Capacitor
6.7 Control Metering
7. Calibration
7.1 Deflection Sensitivity
7.2 When Calibration is Performed
7.3 Calibration Technique
7.4 Calculating Detection Sensitivity
8. Test Method
8.1 Group I
8.2 Group II
8.3 Group III
9. Test Requirements
9.1 Ambient Conditions
9.2 Calibration Sensitivity
9.3 Test Voltage
9.3.1 DC Plus AC Test Voltage
9.4 Rate of Application
9.5 Duration of Tests
10. Bibliography
FIGURES
1. Typical Circuit for Corona Measurement, Circuit 1
2. Typical Circuit for Corona Measurement, Circuit 2
3. Circuit Modifications for Self-Excitation
4. Parallel-T RC Filter Network
5. Peak-To-Peak Voltmeter Circuit
APPENDIXES
A. Preconditioning for Determination of CIV
B. The Magnitude and Energy of Discharges
C. Suggested Specification Requirements
Abstract
Covers the detection of corona and measurement of corona magnitude in electronic transformers, test conditions, terminology, test apparatus, calibration and test requirements are included.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
