10.1.4
Fire-fighting electricity is supplied to the building according to the first and second level loads, and when self-contained power generating equipment is used as the back-up power supply, the self-contained power generating equipment should be set up with both automatic and manual starting devices. When the automatic start-up mode, should be able to ensure that the power supply within 30s.
The power supply for different levels of loads should be in line with the current national standards "Power Supply and Distribution System Design Code" GB
50052.
10.1.5 The continuous power supply time of the standby power supply for the fire emergency lighting and light evacuation signs in the building shall be in accordance with the following provisions:
1
Civilian buildings with a building height of more than 100m shall not be less than 1.5h;
2
Medical buildings, buildings for the elderly, public ********************** with a total floor area greater than 100000m2. 100000m2 of public **** building and a total floor area of more than 20000m2 of underground, semi-underground buildings, should not be less than 1.0h;
3
Other buildings, should not be less than 0.5h.
10.1.6
Firefighting electrical equipment should be used in a dedicated power supply circuit, when the building's production and living electricity is cut off, should still be able to ensure that the firefighting power supply. When the production and living electricity in the building is cut off, should still be able to ensure that the fire fighting electricity.
The power supply time and capacity of the backup fire power supply should meet the requirements of the building fire duration of the fire power equipment.
10.1.7
The fire-fighting power distribution trunk line should be divided according to the fire partition, and the fire-fighting power distribution branch line should not cross the fire partition.
10.1.8
The power supply of fire control room, fire pump room, smoke and smoke exhaust fan room, fire fighting equipment and fire elevator, etc., should be set up in the last distribution box of the distribution line with automatic switching device.
10.1.9
Fire-fighting equipment supplied by the first and second loads, the distribution box should be independently set up; fire-fighting equipment supplied by the third load, the distribution box should be independently set up.
Fire fighting distribution equipment should be set up obvious signs.
10.1.10 fire distribution lines should meet the need for continuous power supply in case of fire, and its laying should comply with the following provisions:
1
When open-laying (including laying in the ceiling), it should be protected by metal conduit or closed metal groove box, and the metal conduit or closed metal groove box should be protected with fire protection measures; when fire-retardant or fire-resistant cables are used and laid in cable wells and trenches, they can be exempted from the requirement of fire protection measures. When using flame retardant or fire-resistant cables and laid in cable wells, trenches, can not wear metal conduit or closed metal slot box protection; when the use of mineral-insulated non-combustible cables, can be directly laid.
2
Concealed laying, should be threaded and should be laid in the non-combustible structure and the thickness of the protective layer should not be less than 30mm.
3
Fire protection distribution lines should be laid separately from other distribution lines in different cable wells, ditches; there is a need to be difficult to be laid in the same cable wells, ditches, they should be arranged separately in the cable wells, ditches, and fire protection distribution lines should be mineral-insulated non-combustible class of non-combustible cable, ditches, and fire protection lines should be used in the cable wells, ditches, and fire protection lines should be used in the cable wells, ditches and fire protection lines. Line should be mineral insulated non-combustible cable.