IEEE - The Institute of Electrical and Electronics Engineers@ Inc.
Latest
IEEE C37.21-2017
Scope
This standard covers ratings@ construction@ and testing of dead-front control switchboards containing@ but not limited to@ devices such as switches@ control devices@ instrumentation@ metering@ monitoring@ protective and auxiliary relays@ and regulating devices and accessories It includes@ but is not specifically limited to@ switchboards for the control and protection of apparatus used for or associated with power generation@ conversion@ transmission@ and distribution It does not apply to industrial controls@ communication equipment@ switchboards for use onboard ships@ or Class 1E switchboards for use in nuclear generating stations@ nor does it address human factor considerations In this standard@ dead-front control switchboards shall be called control switchboards