UL 1053-1999
接地故障测定设备和继电设备

UL Standard for Safety Ground-Fault Sensing and Relaying Equipment Sixth Edition

被代替

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标准号

UL 1053-1999

发布

1999年

发布单位

美国保险商实验所

替代标准

UL 1053 BULLETIN-2008

当前最新

UL 1053-2020

 

 

适用范围

Covers ground-fault current sensing devices, relaying equipment, or combinations of ground-fault current sensing devices and relaying equipment or equivalent protection equipment for use in ordinary locations that will operate to cause a disconnecting device to open all ungrounded conductors at predetermined values of ground-fault current, in accordance with American National Standard National Electrical Code, ANSI/NFPA 70-1999. The proposal that is being circulated at this time is a clarification and reorganization of requirements in UL 1053.

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