IEEE DRAFT C57.12.44 : D2.1 2005
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
REQUIREMENTS FOR SECONDARY NETWORK PROTECTORS
17-10-2023
12-01-2013
1 Overview
1.1 Scope
1.2 Purpose
1.3 Word usage
2 References
3 Definitions
4 Service conditions
4.1 Usual service conditions
4.2 Unusual service conditions
5 Design tests
5.1 Continuous current thermal test
5.2 Electrical tests
5.3 Mechanical endurance test
6 Production tests
6.1 Operational tests
6.2 Dielectric tests
6.3 Insulation resistance tests
6.4 Current path resistance tests
6.5 Mechanical tests
7 Relay characteristics
7.1 General
7.2 Automatic close functions
7.3 Automatic trip functions
7.4 Tripping adjustment
8 Fuses and fuse mountings
8.1 Fuse provisions
8.2 Functional performance specifications
8.3 Fuse types
9 Rating requirements
9.1 Nameplates
9.2 Interrupting rating
9.3 AC voltage ratings
9.4 Dielectric test voltage
9.5 Control voltage
9.6 Closing voltage
9.7 Tripping currents
10 Mechanical performance specifications
10.1 Submersible type
10.2 Nonsubmersible type
10.3 Open frame type
10.4 Mounting application
10.5 General requirements
10.6 Finish
11 Other requirements
11.1 Submersible enclosure
11.2 Nonsubmersible enclosure
11.3 Open frame enclosure
11.4 Mounting configurations
11.5 Network-side terminations
Annex A - Classification of insulating materials
Annex B - Network fuse application
Annex C - Pumping
Annex D - The unprotected zone in network protectors
Annex E - Contact surface oxidation
Annex F - Reverse current sensitivity
Annex G - Network protector enclosures
Annex H - Bibliography
Specifies certain electrical, dimensional, and mechanical characteristics and takes into consideration certain safety features of three-phase, 60 Hz, low-voltage (600 V and below) network protectors. They are used for automatically connecting and disconnecting a network transformer from a secondary spot or grid network.
| DocumentType |
Draft
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| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Withdrawn
|
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