How to set up fire security system

QUANZHOU, China - Jan. 1, 2021 - PRLog -- Part 1 Laying Pipeline
1. Common pipeline material Electric tube pipe contains galvanized steel pipe, welded steel pipe, JDG steel pipe, KBG steel pipe and so on.

2. Wiring types the meaning of the various symbols labeld on common wire and cables
NH——Refractory,pass GB12666.6 refractory test;
ZR——Flame retardant,pass GB12666.5 bundle burning test
ZA/ZB/ZC——Flame retardant Class A / Class B / Class C
WD——Low smoke and halogen free
YJ——Cross – linked polyethylene insulation
V——PVC sheathed
S——Twisted pair
B——Single stranded hard line
R—-Single stranded soft line
K——Control Cable
P——With shield
For example: WDZA-KYJY-7*1.5——Low smoke halogen free flame retardant A grade XLPE double jacket 7 core 1.5mm2 control cable.
Common used wiring types: At least flame retardant wire and cable should be used for weak-current line and fire-resistant cable should be used for the power supply line of the fire alarm system.
alarm circuit——ZR-RVS-2*1.5, NH-RVS-2*1.5, NH-RYJS-2*1.5 etc.
alarm circuit trunk——ZR-RVS-2*2.5, NH-RVS-2*2.5, NH-RYJS-2*2.5
24VDC power line——ZR-BV-2*2.5, NH-BV-2*2.5， NH-BYJ-2*2.5 etc.
24VDC power line trunk——ZR-BV-2*4.0, NH-BV-2*4.0, NH-BYJ-2*4.0
multi-line control circuit——ZR-KVV-N*1.5, NH-KVV-N*1.5 etc.
broadcast line——ZR-RV-2*1.5, ZR-BV-2*1.5, ZR-RVVP-4*1.5
telephone line——ZR-RVS-2*1.5, ZR-RVVP-2*1.5, NH-RVVP-2*1.5 open
pump line——ZR-BV-2*1.5, ZR-RV-2*1.5, NH-BYJ-2*1.5 etc.
fire hydrant open pump feedback line——ZR-RV-4*1.5, NH-BYJ-4*1.5, ZR-KVV-2*1.5
network line——ZR-RVS-2*1.5, ZR-RVV-4*1.5, cat5 etc.
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