Differences between the new and old national standard

The new gb national identity, the old gb products gradually replaced by the new national standard products, old gb main use on the old building fire system maintenance, national mandatory for new project requires the use of the new national standard products.
A, the new national standard of fire emergency light increased self-check function and fault alarm function
1, fire emergency lamps and lanterns of main power for 30 consecutive days + / - 2 days after (i.e., 30 days), 35 seconds, lamps and lanterns emergency automatically after the return to the main electricity function;
2, continuous work a year later, when the fire emergency lighting lamps and lanterns will automatically emergency lighting, the battery power after inside, then automatically return to charging status (that is, the lamps and lanterns for battery maintenance themselves);
3, monthly self-inspection emergency lighting are 30 seconds of time, or years amounted to less than 30 minutes self-checking emergency lighting, lamps and lanterns will alarm;Only pull out troubleshooting or plug, can block the interference of alarm;
4, when emergency lamps and lanterns at every turn on the mains, there will be automatic hint sound;
5, fire emergency lighting in the case of the battery is broken, will automatically alarm.
6, when the damage of the fire emergency lighting light source, lamps and lanterns light up the yellow indicator light panel and alarm;
7, alarm frequency: ring at least once every minute, every time duration for 1 to 3 seconds, the voice alarm between 65 db and 85 db (a);


Second, the new standards: fire emergency lighting must meet minimum brightness
New national standard GB17945-2010, surface brightness and luminous flux of fire emergency lamps and lanterns (intensity) for specific requirements, marker light surface brightness should be not less than 50 CD / ㎡, emergency lighting lamps and lanterns lighting brightness should not be less than 50 lumens below;
Market before using the old national standard of fire emergency lamps and lanterns is due to the lack of brightness requirements, most can't meet the requirements of fire emergency lighting lamps and lanterns, fire hazard always exists;While the new national standard of fire emergency lamps and lanterns of brightness than before the brightness of lamps and lanterns for 10 to 50 times, effectively guarantee the requirement of fire safety;


Three, the new national standard of fire emergency light resistance capacity step-down method will not be used
1, the old national standard forms of fire emergency lights, adopts resistance capacity step-down method, but the resistance capacity step-down power factor is low, waste too much electricity, an emergency light using resistance capacity step-down more than a day wasted nearly once electricity;
2, resistance capacity, step-down alters the phase of the normal line, make the centerline of the three phase four wire produces large current concurrency hot, large quantities of use will damage the power grid;
3, the new national standard of fire emergency lamps and lanterns are all made of the transformer, small power consumption, high efficiency, stable performance;


Fourth, the new standard increases the demand for protection grade
Protection grade: the purpose is to prevent people or animals come into contact with electric parts of lamps and lanterns;In the new national standard of fire emergency lamps and lanterns use protection grade IP30, can effectively prevent casualties people or animals;Also stipulates that the use of fire emergency buried lights protection grade reaches IP65, from the old national standard of AC220V mains power supply form, adjusted to present in the form of safety voltage power supply, safety performance for emergency lamps for further ascension;


Five, the new national standard emergency light increases the creepage distance and clearance requirements
Regulations: in the new national standard has ground fire emergency lamps and lanterns of creepage distance is greater than 2.5 mm, the clearance is greater than 1.7 mm, air and electrical conductivity is found the object itself, creepage distance and clearance requirement, will reduce the causes of electrical short circuit, reduce the security hidden danger, and to protect the safety of power grid.


Six, the new national standard of fire emergency lamps and lanterns should be connected to the emergency lighting distribution box
Fire emergency lighting distribution box, emergency lighting distribution box and fire fighting equipment direct linkage, avoid fire occurs, the grid work, and emergency lamps and lanterns can't enter a state of emergency;According to integrated fire emergency lighting distribution box will automatically all emergency lamps and lanterns is entered into a state of emergency work.


Seven, new gb modified the fire emergency sign pattern of lamps and lanterns
The new standard for fire evacuation indicator lamps and lanterns design new specifications:
Benefits: can make information than words are easier to identify.
Advantage 2: and international norms.