IEEE C37.14-1979

$30.88

IEEE Standard for Low-Voltage DC Power Circuit Breakers Used in Enclosures

Published By	Publication Date	Number of Pages
IEEE	1979

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Description

New IEEE Standard – Superseded. This standard covers enclosed low-voltage DC power circuit breakers of the stationary or drawout type of single- or two-pole construction with one or more rated maximum voltages of 300 V, 325 V, 800 V, 1000 V, 1600 V, or 3200 V for applications on dc systems having nominal voltages of 250 V, 275 V, 750 V, 850 V, 1500 V, or 3000 V, with general-purpose, high-speed, semi-high-speed and rectifier circuit breakers; manually or power-operated; and with or without electro-mechanical or solid-state trip devices. It deals with service conditions, ratings, functional components, temperature limitations and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application.

PDF Catalog

PDF Pages	PDF Title
5	1 Scope 2 Definitions
6	3 References 4 Serviceconditions 5 Ratings 5.1 Rating Information Rated Maximum Voltage 5.3 Rated Continuous Current Rated Momentary Current
7	5.5 Rated Peak Current 5.6 Rated Short-Time Current 5.7 Rated Short-circuit Current Rated Control Voltage Functional Components 6.1 Nameplate(s) Contact Position Indicator Stored Energy Indicator
8	Temperature Limitations and Classification of Insulating Materials 7.1 Temperature Limits Limits of Observable Temperature Rise Classification of Insulating Materials Table 1 Functional Components
9	Table 2 Limits of Temperature Rise
10	Insulation (Dielectric) Withstand Voltage Requirements 9 TestRequirements Schedule of Design Tests
13	Table 3 Copper Conductors for Use in Continuous Current Tests
16	Treatment of Failures Within a Test Sequence 9.4 ProductionTests
17	10 Application Guide 10.1 Scope 10.2 General
19	10.3 Limiting Transient Arc Voltage 10.4 Application Limitations Relating to Mechanism Types
20	10.5 Service Conditions Affecting Circuit Breaker Applications Motor Starting and Running Duty 10.7 Repetitive Duty Operations and Normal Maintenance Table 4 Altitude Correction Factors
21	10.8 Application of Circuit Breakers Without Enclosures
23	Appendix Fig A1 Current Wave Shape of Solid-state Rectifier and Classic Rate-of-Rise