GB/T 20235-2006

GB/Z 21713-2008 Recommended practice on characteristic of surges in low-voltage (1000 V and Less) AC Power circuits GB/Z 22721-2008 Guidance for the correct use of residual current-operated protective devices (RCDs) for household and similar use GB/Z 32513-2016 General rules of reliability for low voltage apparatus GB/Z 22200-2016 Reliability test method for lower capacity alternating current contactors GB/Z 22074-2016 Reliability test method for moulded-case circuit-breakers GB/Z 22201-2016 Reliability test method for contactor relay GB/Z 22203-2016 Reliability test method of circuit-breakers for overcurrent protection for household and similar installation GB/Z 22202-2016 Reliability test method of residual current operated circuit-breakers for household and similar uses