
INSTALLATION
2-5
Document No.: SIG-00-11-10 Version: A.1
2.1.3
Surge Protection
Siemens Mobility, Inc. strongly recommends installing primary surge protection on
external lines. A typical installation incorporating a surge suppressor on the wiring
going to the signal lamp is shown in the figure below. Siemens Mobility, Inc.
strongly recommends this type of installation.
CAUTION
SIEMENS MOBILITY, INC. STRONGLY RECOMMENDS
INSTALLING PRIMARY SURGE PROTECTION ON
EXTERNAL LINES CONNECTING TO THE VIU
Figure 2-6 Typical Installation with Surge Suppression
J1
J2
J3
J4
J2
To
Lamp
Terminal Board
From
Lamp
Driver
Current Sensor
Adapter Board
Existing
Terminal
Surge
Arrestor
To
Earth
Ground