GB 16917.1-2003
Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses(RCBO)-Part 1: General rules (English Version)

Standard No.

GB 16917.1-2003

Language

Chinese, Available in English version

Release Date

2003

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2015-06

Replace By

GB 16917.1-2014

GB/T 16917.1-2014

Latest

GB 16917.1-2014

GB/T 16917.1-2014

Replace

GB 16917.1-1997

Scope

This part applies to AC 50Hz or 60Hz, rated voltage not exceeding 440V, rated current not exceeding 125A, rated short-circuit capacity not exceeding 25000A, operating function independent or related to the power supply voltage with overcurrent protection Residual current operated circuit breaker (hereinafter referred to as RCBO). RCBO is used to protect people from indirect contact. At this time, the exposed conductive parts of the equipment should be connected to a suitable earth electrode. RCBO can also be used for overcurrent protection of buildings and line equipment for similar purposes, and it can also provide protection for fire hazards caused by continuous ground fault currents due to the failure of overcurrent protection devices. RCBO with a rated residual operating current not exceeding 30mA can also be used as a supplementary protection measure when other electric shock protection measures fail. This standard applies to devices that can simultaneously detect residual current, compare the residual current value with the residual operating current value and disconnect the protected circuit when the residual current exceeds this value. The device can also switch on, carry and break overcurrent under specified conditions. General type RCBO is resistant to nuisance tripping, which means that the surge voltage (generated by operating transient overvoltage or lightning induction) generates load current in the equipment without flashover. S-type RCBO has sufficient resistance to mis-tripping even when surge voltage causes flashover and generates freewheeling. When excessive overvoltage easily occurs on the power supply side (for example, the power supply is introduced through overhead lines), special protection measures can be taken ( For example: using lightning arresters) (see GB 16895.12). This standard also applies to RCBOs assembled from suitable residual current devices and circuit breakers, the mechanical assembly of which can be done by the manufacturer at the factory or on site, when the requirements of Annex G apply. This standard also applies to RCBOs having more than one rated current, provided that the means for changing the rated current from one value to another in normal use are not accessible and the rating cannot be changed without the use of tools. RCBO. Supplementary technical requirements are required for plug-in RCBOs. Special technical requirements must be attached to RCBOs fitted into household and similar general purpose plugs, sockets or appliance connectors or RCBOs specially used in combination with them. This section does not apply to: - RCBOs used for motor protection; - RCBOs whose set current value can be adjusted by the user during use. The technical requirements of this section apply to normal environmental conditions (see 7.1). For RCBOs used in areas with severe conditions, necessary technical requirements may be added. RCBOs using batteries are not included in the scope of this standard. Appendix F gives guidelines for the coordination of RCBOs with fuses. Down

GB 16917.1-2003 history

• 2014 GB 16917.1-2014 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs).Part 1:General rules
• 2003 GB 16917.1-2003 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses(RCBO)-Part 1: General rules
• 1997 GB 16917.1-1997 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO)--Part 1: General rules

GB 16917.1-2003 -All Parts