General Information On The Conduit In Tcs Audio Systems; Principle Loop Resistance; Measurement Loop Resistance - TCS ISW3130 Product Information

07/2015

General information on the conduit in TCS audio systems

The conduit is determined by structural conditions and is only limited by ist length.
 observe when selecting the cables: the loop re-
sistance can amount max. 20 Ω (see table)
 in compliance to the max. permitted loop re-
sistance the cross section can be doubled,
which means, that for one wire two lines can be
used (illustration). The lines have to be twisted.
 when using shielded cables: connect the shield-
ing with each other and put it one-sided on mass
(b-wire) in the power supply
 optional strand- or star formed wiring
Table: loop resistance
cable length in m
10
20
30
40
50
60
70
80
90
100
150
200
250
300

principle loop resistance

None of the devices (AS, IS or FE) should ever be
located more than 20 Ohm away from the power
supply and control unit (VS).
TCS TürControlSysteme AG
E-Mail: hotline@tcsag.de • www.tcsag.de
13
cable diameter
0.6 mm
loop resistance in Ω
1.28
2.55
3.83
5.10
6.38
7.65
8.93
10.20
11.48
12.76
19.13
25.51

measurement loop resistance

 Switch off the 230 V / 50 Hz of the VS.
 Install the a-b short-circuit at the VS.
 Other devices do not disturb the measurement,
they can stay connected.
 Measure the resistance on a/b IS at the strand of
the last indoor or front-door station.
0.8 mm
0.71
1.43
2.14
2.86
3.57
4.29
5.00
5.71
6.43
7.14
10.71
14.29
17.86
21.43
Subject to technical changes.
PI_ISW3130-uk 2 A