Cabinet Back Plate; Master Switch Assembly - Siemens ST750 Configuration Handbook

Cabinet Back Plate

3.3
With reference to Figure 1, the Cabinet Back Panel provides the anchor point for several of the
control's component parts. Stencilled graphics aid the positioning of some components. Other,
large components, have fixed positions. Please refer to the individual paragraphs below for
details on which component's position requires optimization. The Cabinet Back Panel need not
be specified separately as it contained within the specified Outercase, chosen from Table 5.

Master Switch Assembly

3.4
When configuring a full controller this unit should not be specified separately as it contained
within the Outercase, chosen from Table 5.
With reference to Figure 8
Figure 9 and Figure 10 the main supply voltage is applied to the main ON/OFF
63A Double Pole Isolator, within the Master Switch Assembly, for onward supply to the
ST750ELV Traffic Controller.
The live connection is taken from the main ON/OFF mini circuit breaker and applied to a 20A
Master fuse.
The output from the 20A Master fuse is applied to a mains filter, detailed in Figure 10, for onward
distribution, via a dedicated 32A Isolator (Controller Switch), to the mains transformer.
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Copyright © Mobility 2017. All Rights Reserved.
Figure 8
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property name.
008
Nathan Fearnhead
Configuration Control
Mobility and Logistics, Traffic Solutions
Sopers Lane, Poole, Dorset, BH17 7ER
Figure 9
6A Mini 20A
Circuit Master
Breakers Fuse
Figure 9, Figure 8
Page
Status
Date
Document No.
Mobility is a division of Siemens Plc
63A 32A
Double Isolator
pole
isolator
19 of 73
Released
16/06/2017
667/CC/32750/000