IEEE C37.90 2006
$44.96
IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus
Published By | Publication Date | Number of Pages |
IEEE | 2006 | 29 |
Revision Standard – Active. Service conditions, electrical ratings, thermal ratings, and testing requirements are defined for relays and relay systems used to protect and control power apparatus. This standard establishes a common reproducible basis for designing and evaluating relays and relay systems.
PDF Catalog
PDF Pages | PDF Title |
---|---|
1 | IEEE Std C37.90ā¢-2005, IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus |
3 | Title page |
6 | Introduction Notice to users Errata Interpretations |
7 | Patents Participants |
9 | CONTENTS |
11 | 1. Overview 1.1 Scope |
12 | 1.2 Purpose 2. Normative references 3. Special terms 4. Service conditions 4.1 Usual service conditions |
14 | 4.2 Unusual service conditions |
15 | 5. Electrical ratings 5.1 Standard current and voltage ratings for relays |
16 | 5.2 Maximum design voltage and current for relays 5.3 Allowable variations from rated voltage for voltage operated |
17 | 5.4 Allowable variation from rated voltage and current for prote |
18 | 5.5 Allowable ac component in dc control voltage supply 5.6 Short time thermal withstand |
19 | 5.7 Make, carry, and interrupt ratings for tripping output circu |
20 | 5.8 Make, carry, and interrupt ratings for output circuits not r 5.9 Published data for auxiliary relays |
22 | 6. Heating limits of temperature rise for coils 7. Mechanical requirements 7.1 Mechanical durability of relay operation 7.2 Mechanical durability of plug-in relays 7.3 Mechanical durability of relay setting controls |
23 | 7.4 Shock and vibration 8. Insulation tests 8.1 General requirements 8.2 Dielectric power frequency tests |
25 | 8.3 Impulse voltage tests |
27 | Annex A (informative) Applicable IEC standards |