Requirements for control, secondary, and logic-level wiring are addressed in this amendment. It covers wire type, ampacity, and methods for protecting wiring across a hinge.
- Sponsor Committee
- PE/SWG - Switchgear
Learn More - Status
- Active Standard
- PAR Approval
- 2019-02-08
- Board Approval
- 2020-03-05
- History
-
- Published:
- 2020-07-01
Working Group Details
- Society
- IEEE Power and Energy Society
Learn More - Sponsor Committee
- PE/SWG - Switchgear
Learn More - Working Group
-
SASC-WG_C37.21 - SASC - IEEE Standard for Control Switchboards
Learn More - IEEE Program Manager
- Ashley Moran
Contact - Working Group Chair
- Dan Hrncir
No Active Projects
C37.21-2017
IEEE Standard for Control Switchboards
Ratings, construction, and testing of dead-front control switchboards containing, but not limited to, devices such as switches, control devices, instrumentation, metering, monitoring, alarms, annunciators, protective and auxiliary relays, and regulating devices and accessories are covered in this standard. 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. Types of switchboards may include control, vertical, dead-front, enclosed, dual, or duplex switchboards. Other construction types include control desks, consoles, benchboards, dual or duplex benchboards, fixed rack, cabinet, and swing rack cabinets. It does not apply to industrial controls, communication equipment, switchboards for use on board ships, or Class 1E switchboards for use in nuclear generating stations.
C37.21-2005
IEEE Standard for Control Switchboards
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, alarms, annunciators, 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. Types of switchboards may include control, vertical, dead-front, enclosed, dual, or duplex switchboards. Other construction types include control desks, consoles, benchboards, dual or duplex benchboards, fixed rack, cabinet, and swing rack cabinets. It does not apply to industrial controls, communication equipment, switchboards for use on board ships, or Class 1E switchboards for use in nuclear generating stations.
No Inactive-Withdrawn Standards
No Inactive-Reserved Standards