NEMA SG 4-2000
交流高压断路器

Alternating-Current High-Voltage Circuit Breakers

被代替

NEMA SG 4-2000 发布历史

NEMA SG 4-2000由NEMA - National Electrical Manufacturers Association 发布于 2000-01-01，并于 2009-06-17 实施。

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NEMA SG 4-2000的历代版本如下：

• 2009年 NEMA SG 4-2009 交流电高压线路断路器
• 2000年 NEMA SG 4-2000 交流高压断路器
• 1990年 NEMA SG 4-1990 交流高压断路器
• 1975年 NEMA SG 4-1975 交流高压断路器；修订版 1 1977年11月 修订版 1 1977年12月的编辑更正（撤回）

This standards publication encompasses:a. All ratings for outdoor circuit breakers above 1000 volts for alternating-current service. (Automatic circuit reclosers are excluded.) Circuit breakers for service in metal-clad enclosures are included in NEMA Standard SG 5.b. Attachments for these circuit breakers@ such as bushing current transformers@ bushing potential devices@ interlocks@ undervoltage trip devices@ shunt trips@ overcurrent trips@ and auxiliaries sold with the circuit breakers such as closing relays and structural steel supports.c. Renewal@ modernizing@ and spare parts for these circuit breakers and attachments.d. Recommended installation@ operation@ and maintenance procedures.?

标准号

NEMA SG 4-2000

发布

2000年

发布单位

NEMA - National Electrical Manufacturers Association

替代标准

NEMA SG 4-2009

当前最新

NEMA SG 4-2009

 

 

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