Fire automatic fire alarm have weak lines which type of system

The system is composed of many different fire fighting equipment networking constitute a fire automatic fire alarm, which include the fire alarm, smoke detector, temperature detector, manual alarm, sound and light alarm, alarm, fire fighting linkage and so on, different devices need to be connected with a weak line corresponding, here to take you understanding of fire protection system has weak wire which species.

The signal line

The signal line is flame retardant / refractory red and blue double strand, red blue negative. Code type bus smoke temperature detector, a signal output device can be directly connected to the signal line, while the non coding type multi line smoke detector, alarm, not the output signal of the equipment needed to receive intelligence module, the module is connected to the signal line.

Power cord

Power line is flame retardant / refractory the twisted pair or flame retardant BV hard line, red black negative. The control module is connected with signal line needs to be connected to power line. Alarm bell as with address directly connected signal line and power line. If not addressed by the control of the output module is connected with the signal line power line. As the air supply valve, exhaust valve, electric valve, electric outlet, fan, fan, exhaust fan, air compressor control and non fire power, elevator through the control module and the signal line and the power line and the alarm host connection.

Hard wire

Some of the equipment required by the fire control room through the direct control of multi line manual control panel, such as fire pumps, sprinkler pump, fan, exhaust fan, according to the general equipment manufacturers are different for 6/4 core sheathed cable or 6/4 flame retardant BV hard line. With the general BV hard line is available in various colors to distinguish.

Broadcasting line

General flame retardant / refractory the twisted cord, red black negative. Connection for the fire control room, fire radio host broadcast audio and microphone.

Telephone line

The telephone line is more common, generally white flame retardant parallel flexible cord, used to connect the fire control room telephone host and fire telephone and telephone jack.