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2TLC172178M0201, rev. D
12
www.abb.com/lowvoltage
2011-11-15
Parallel
Examples of more than one pair of Spot set up beside (or on top of) each other.
Not allowed*
Allowed
Allowed
* This setup may be non-safe depending on the distance between the Spot pairs. The minimum distance between
the Spot pairs are calculated assuming the worst case scenario.
Worst case
Table 2
L
x
5 m
0.44 m
10 m
0.87 m
20 m
1.75 m
35 m
3.06 m
Spot T
Danger!
Spot R
Transmitter 1
Receiver 1
Spot T
Spot R
Transmitter 2
Receiver 2
Spot T
Spot R
Transmitter 1
Receiver 1
Spot T
Spot R
Transmitter 2
Receiver 2
Wall
Spot R
Spot T
Receiver 1
Transmitter 1
Spot T
Spot R
Transmitter 2
Receiver 2
x
L
= 2.5
Transmitter 1
Spot T
Receiver 1
Spot R
Transmitter 2
Spot T
Receiver 2
Spot R