Operations and Maintenance Manual

JANUS

Multi-Protocol Reader 2.4 Maintenance Instructions

Confidential UM 360467-110 Revision: B Page 152 of 247

All information contained herein is proprietary to, and may only be used with express, written permission from, Kapsch TrafficCom Canada Inc.

FILE: UM 360467-110 REV B3 MPR 2.4 CLEAN.DOCX 03/02/2021 1:01

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 mains power 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.