HST HP101U, Инструкция по установке и эксплуатации

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Appendix B Wire Requirements
Connecting external system accessories to the PANEL main circuits must be carefully considered to ensure proper
operation. It is important to use the correct type of wire, wire gauge and wire run length per each PANEL circuit.
Reference the chart below to specify wire requirements and limitations for each PANEL.
TABLE B-1: Wire Requirements
CIRCUIT CONNECTIONS
CIRCUIT CONNECTIONS
WIRE REQUIREMENTS
WIRE REQUIREMENTS
CIRCUIT TYPE CIRCUIT
FUNCTION
WIRE TYPE AND
LIMITATIONS
RECOMMENDED
MAX. DISTANCE
Feet (meters)
WIRE GUAGE
Initiating Device
Circuit
Connects to
Initiating Devices
Untwisted, unshielded wire
(Do not exceed 100 ohms)
10,000 (3,000 m)
8,000 (2,400 m)
4,875 (1,480 m)
3,225 (975 m)
12 AWG (3.25 mm 2 ) Belden 9583
WPW999
14 AWG (2.00 mm 2 ) Belden 9581
WPW995
16 AWG (1.30 mm 2 ) Belden 9575
WPW991
18 AWG (0.75 mm 2 ) Belden 9574
WPW975
EIA-485 Connects to
annunciator
modules and relay
module
Twisted, shielded pair with a
characteristic impedance of
120 ohms
6,000 (1,800 m) 18 AWG (0.75 mm 2 )
24 VDC resettable,
nonresettable
Connects to
annunciators and
other accessories
No more than 1.2 volt drop
allowed from supply source
to end of any branch
Distance limitation
set by 1.2 volt
maxi- mum line
drop
12 AWG (3.25 mm 2 ) - 18 AWG
(0.75 mm 2 )
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