The national standard prescribed the using safety requirements of luminaires for emergency lighting, like filament lamp, tubular fluorescent lamp and miscellaneous gas discharge lamp. Their emergency power supply voltage is no more than 1, 000 V. When you read the national standard, please refer to related chapters of GB 7000. 1.
The national standard is exclusive of explosion protection emergency lighting luminaire [see GB 3836.1-83(neq IEC 79)], it is also exclusive of influence on luminaire with high voltage gas discharge lamp when the non- emergency voltage drops.
Note: in non- emergency period, some emergency lighting luminaires are able to work under normal supply voltage.
