In the fire alarm, is the power line from the fire alarm controller to each module and fire branch box?
The branch box automatic fire alarm and linkage control system in power supply, power supply, power supply control module in fire fighting equipment, fire linkage from the power supply (DC24V) disc lead out, not from the fire alarm controller the fire alarm controller with DC power supply capacity is very small, can only use its own.
Modern fire control system is more and more big, the power transmission distance more and more far, large pressure drop increasing wire section wire, also difficult to solve the problem, to the terminal equipment far due to excessive pressure drop is not working properly, take in the distance and then set the EPC and UPS system for fire power.
Smoke twisted twisted wire family is two lines sold together, but also bought two lines of a group of buy, is a group of two lines.UTP comes from the controller circuit board. The alarm controller is provided with the 24V power line, but the capacity is limited. If the linkage is larger, you can use the linkage power disk or power box. If you need to use the power of disk controller or keyboard desktop cabinet.
Smoke detectors and other detectors are actually connected on the bus, but from the design drawings, the feeling is connected in series, but in fact it is in parallel.The alarm controller circuit pulls out the signal bus, the control board has 24V power supply or can use linkage power supply.The power line and the signal line are distinguishable, and the general control module, acoustooptic and some non universal detectors need the power supply.If the modules, boxes, etc. require power, but are far from the controller, or the controller provides limited power supply, the power box can be used. The power box can provide DC 24V power supply on the spot.
