JB/T 8976-2006 (English Version) PDF

Scope: This standard specifies the product model, technical requirements, test methods, inspection rules and other technical requirements for HR5 series fused isolating switches (hereinafter referred to as switches). This standard applies to the HR5 series fuse-type isolating switch, which has a rated insulation voltage of 690V AC and a rated power of 50Hz. When the rated operating voltage is 380V, the rated operating current is up to 630A; when the rated operating voltage is 660V AC, the rated operating current is up to 425A, mainly used in distribution circuits and motor circuits with high short-circuit current, as power switches, isolating switches and emergency switches, and for AC circuit protection. This switch is not used to directly switch on or off a single motor.

JB/T 8976-2006 Referenced Document

GB/T 14048.1-2000 Low-voltage switchgear and controlgear. General rules
GB/T 2423.1-2001 Environmental testing for electric and electronic products Part 2: Test methods Tests A: Cold
GB/T 2900.18-1992 Electrotechnical terminology--Low voltage apparatus
GB/T 4207-2003 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions
GB/T 5169.11-1997 Fire hazard testing for electric and electronic products. Test methods. Glow-wire end-product test and guidance