Operations and Maintenance Manual

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MPR 4.1 Reader Maintenance Instructions
Confidential UM UM360479-100 Revision: Draft B4 Page 83 of 246
© Kapsch TrafficCom Canada Inc. 2022
All information contained herein is proprietary to, and may only be used with express, written permission from, Kapsch TrafficCom Canada Inc.
FILE: UM360479-100 REV B4 DRAFT WIP MPR-4.1 READER OPERATIONS AND MAINTENANCE MANUAL (002).DOCX
05/25/2022 11:18
Kapsch TrafficCom
The earth ground system
WARNING:
AN IMPROPERLY GROUNDED READER COULD RESULT IN
ELECTRIC SHOCK. ENSURE A HIGH CURRENT EARTH GROUND
CONNECTION IS ESTABLISHED BEFORE CONNECTING SUPPLY
POWER.
The system integrator supplies the earth ground system for the Reader as per the IEEE 142-2007
standard, particularly; chapter 5: Sensitive Electronic Equipment Grounding; and chapter 3 pertaining
to lightning protection; and all other chapter sections describing bonding applications.
The system integrator is responsible for ensuring that grounding and power conforms to local
regulatory and safety requirements. The recommendations herein are those ensuring bad grounding
does not degrade the reader performance.
In accordance with IEEE 142-2007 all of the following building/site elements (if available) must be
bonded together:
• Metal frame of the building (if effectively grounded)
• Metal underground water pipe
• Ground ring, concrete encased electrode
The Reader ground bar (supplied by the system integrator) is bonded to the above-mentioned
elements. If none of these elements are available on site, only then a grounding electrode is installed
as per NEC to which the Reader ground bar is bonded. The Reader components ground wires are then
connected to the ground bar clamps as shown in Figure 5-1.
Lightning arrestors should be installed on the interfaces where lightning induced surges can occur.