Electrical Wiring; Type Of Wiring - Hitachi PC-ARF Technical Catalogue

7 Gateways for building management systems
HARC-BX E

7.4.3 Electrical wiring

C A U T I O N
• All wiring work must be done in accordance with local regulations and the instructions of the electricity company.
• A qualified electrician should carry out the electrical wiring.
• Adjust the electrical leakage detector switch in accordance with local regulations.

7.4.3.1 Type of wiring

1 The wiring for the HARC-BX E depends on the components connected. The HARC-BX E should be installed between
the power supply, the monitoring equipment, the mono bloc air conditioning and the earthing connection.
2 Wiring method
No.
Power supply wiring

Earthing cable

Monitoring equipment wiring

Signal cable between units

N O T E
* LonWork network cable: Use the cable recommended by Echelon Co., Ltd. and follow the monitoring equipment manufacturer's instruc-
tions. For further information, consult the manual supplied by Echelon Co., Ltd. "FTT·10A transceiver user guide".
By way of a reference for the user, the following table describes the types of signal cables and their characteristics.
Cable
Belden 85102, one/twisted pair, number of
cores 19/29, without shielding, 150 ºC
Belden 8471, one/twisted pair, number of
cores 19/29, without shielding, 60 ºC
Level VI 22AWG, twisted pair, one core,
without shielding
JY(St)Y2×2×0.8, one core, shielded, spiral
4 cable twisted
TIA568A Category 5, 24AWQ, twisted pair
N O T E
If a shielded cable is used, it should be connected via a metal film resistor, with a rating of 470 kΩ 1/4 W, and a tolerance of less than 10%
to prevent the generation of static charges.
672 672
TCGB0106 rev.0 - 12/2014
AC 100/240V
Control device
Power supply
Monobloc air
conditioning
Connection equipment
Cable diameter/
AWG
1.3 mm/16
1.3 mm/16
0.65 mm/22
0.8 mm/20.4
0.51 mm/24
Monobloc air
conditioning
Wiring specifications
AC 100/240V 2 mm shielded with 2 cores
2
According to local regulations
LonWork* network cable
1P-0.75 mm shielded pair or twisted and
2
shielded pair cable
Electrical Capacitance
resistance Ω/Km µF/Km
28 56
28 72
106 49
73 98
168 46
% Vprop of the
speed of light
62
55
67
41
58