What line does the automatic fire alarm terminal box connect with?
1 、 the alarm signal line is set according to the circuit, that is, each circuit uses a ZR-RVS2*1.5mm2 twisted pair, and the line diameter is determined according to the transmission distance.2, linkage power line can be multi loop common, but must pay attention to control equipment required action current is big, avoid voltage enough, low current caused by the control device can not normal action.3, fire broadcasting lines can be shared, switching modules are set up in each control area for linkage switching.
4, the telephone line is divided into the jack telephone and the straight line telephone, the jack telephone can share, the straight line telephone is from the telephone host to the extension one to one, namely each telephone extension draws a group line from the host.5, fire hydrant pump button line can be shared6, explicit line is separate from the alarm host leads signal line and power line, (separate proposals from the host LED power line, power line and do not suggest linkage sharing) is based on the explicit loop quantity to determine the number of signal lines.
The main line includes: alarm signal line, linkage power line, fire protection broadcasting line, alarm telephone line, fire hydrant pump, button line and layer display line.
The main line is led out from the fire alarm main, along the bridge or shaft to the terminal box of each floor.
