IEEE C57.12.44-2000

$80.71

Standard Requirements for Secondary Network Protectors

Published By	Publication Date	Number of Pages
IEEE	2000	56

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Category: IEEE

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Description

Revision Standard – Superseded. Superseded by IEEE Std C57.12.44-2005 The performance, electrical and mechanical interchangeability, and the safety of the equipment are covered. The proper selection of such equipment is established as a basis for use in this standard. Certain electrical, dimensional, and mechanical characteristics are described; and certain safety features of three-phase, 60 Hz, low-voltage (600 V and below) network protectors are taken into consideration. This equipment is used for automatically connecting and disconnecting a network transformer from a secondary spot or grid network.

PDF Catalog

PDF Pages	PDF Title
1	Title Page
3	Introduction Participants
5	CONTENTS
7	1. Overview 1.1 Scope 1.2 Purpose 1.3 Word usage 2. References
8	3. Definitions
10	4. Service conditions 4.1 Usual service conditions 4.2 Unusual service conditions
11	5. Design tests 5.1 Continuous current thermal test
13	5.2 Electrical tests
16	5.3 Mechanical endurance test 6. Production tests
17	6.1 Operational tests
18	6.2 Dielectric tests
19	6.3 Insulation resistance tests
20	6.4 Current path resistance tests 6.5 Mechanical tests
21	7. Relay characteristics 7.1 General 7.2 Closing characteristics 7.3 Tripping characteristics 7.4 Closing adjustment
22	7.5 Tripping adjustment
24	8. Fuses and fuse mountings 8.1 Fuse provisions
25	8.2 Functional performance specifications 8.3 Fuse types
26	9. Rating requirements 9.1 Nameplates 9.2 Interrupting rating 9.3 AC voltage ratings 9.4 Dielectric test voltage 9.5 Control voltage
28	9.6 Closing voltage 9.7 Tripping currents
29	10. Mechanical performance specifications 10.1 Submersible type 10.2 Nonsubmersible type 10.3 Open frame type
30	10.4 Mounting application 10.5 General requirements
33	10.6 Finish 11. Other requirements 11.1 Submersible enclosure 11.2 Nonsubmersible enclosure
34	11.3 Open frame enclosure 11.4 Mounting configurations 11.5 Network-side terminations
36	Annex A—Classification of insulating materials
40	Annex B—Network fuse application
50	Annex C—Pumping
51	Annex D—The unprotected zone in network protectors
52	Annex E—Contact surface oxidation
53	Annex F—Reverse current sensitivity
56	Annex G—Network protector enclosures