IEEE C37.90 1989
$37.38
IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus
| Published By | Publication Date | Number of Pages |
| IEEE | 1989 | 16 |
Revision Standard – Inactive – Superseded. Superseded by IEEE Std C37.90-2005 This standard applies to relay systems that protect and control apparatus that generate, and distribute and use electric power. This standard defines service conditions and specifies relay performance requirements and performance information that relay manufacturers shall provide.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Title Page |
| 3 | Introduction |
| 4 | Participants |
| 6 | CONTENTS |
| 7 | 1. Scope 2. Purpose 3. Definition of a Relay 4. Relay Terms and Terminiology and Classification by Function |
| 8 | 5. Service Conditions 5.1 Usual Service Conditions 5.2 Unusual Service Conditions |
| 10 | 6. Electrical Ratings 6.1 Standard Current and Voltage Ratings for Relays 6.2 Maximum Design Voltage and Current for Relays |
| 11 | 6.3 Allowable Variation from Rated Voltage for Voltage Operated Auxiliary Relays 6.4 Allowable Variation from Rated Voltage and Current for Protective Relays |
| 12 | 6.5 Allowable AC Component in DC Control Voltage Supply 6.6 Short Time Thermal Withstand 6.7 Make and Carry Ratings for Tripping Output Circuits |
| 13 | 6.8 Make and Carry Ratings for Output Circuits Not Rated for Tripping 6.9 Published Date for Auxiliary Relays 7. Heating-Limits of Temperature Rise for Coils 8. Dielectric Tests 8.1 Dielectric Tests at the Point of Manufacture 8.2 Dielectric Tests by Users 8.3 Dielectric Tests Across Open Contacts |
| 14 | 8.4 Dielectric Test Methods |
| 16 | 9. Surge Withstand Capability Tests 9.1 General 9.2 Surge Tests |
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