MTL Instruments ZoneMaster Operating Manual

CONNECTING LEADS
Connect the suppressor as shown in the installation diagram. Refer to page 5 for recommended cable dressing. Connect the terminals within the suppressor to the load side of 60A breakers within the panel.
RECOMMENDED WIRE GAUGE
Minimum of 8 AWG Maximum of 4 AWG ( for ease of dressing)
LENGTH OF CONNECTING LEADS
The longer the connecting leads between the the ZoneMaster and power panel, the higher the residual transient voltage.
RECOMMENDED MAXIMUM: 19” (500mm) IDEALLY: 10” (250mm)
RECOMMENDED CABLE DRESSING
Each 10” (250mm) increase in cable length; increases clamping volt­age by 25V per 1000A surge current discharged.
• BIND THE PHASE NEUTRAL AND GROUND CONDUCTORS TIGHTLY, OVER THE ENTIRE RUN FROM THE SUPPRESSOR TO THE SERVICE PANEL.
• ALWAYS USE THE SHORTEST LENGTH OF CONNECTING CABLE POSSIBLE.
4 5
DIMENSIONS
INTRODUCTION
60A
N
L2
L1
L1 L2
G
N
This document explains how to install the ZoneMaster Series of AC Panel Surge Protective Devices.
INSTALLATION INSTRUCTIONS
Warning: T erminals marked L1, L2, L3, N, GND (where relevant) must
be connected respectively to phase(s) neutral and ground. Failure to comply may result in danger or damage. See corresponding diagrams for proper connections.
INSTALLATION DESCRIPTION
ZoneMaster units are connected in parallel (or in “shunt” across) the supply to be protected. The connecting cable does not carry the sup­ply current, only the current associated with suppressing the transient overvoltage.
MOUNTING
The units should be mounted as close as possible to the panel to be protected. See (page 4) on Connecting Lead lengths. Conduit, preferably metallic, is to be installed from the suppressor to the panel. Drill holes in the ZoneMaster enclosure only in the designated areas as shown in recommended cable dressing illustrations (page 5). Mount the unit in the appropriate location using the mounting holes provided on the enclosure.
ZONEMASTER
Confi guration
and Schematic Connection Diagrams
120/240V SPLIT PHASE 3W
INCORRECT INSTALLATION WILL IMPAIR THE EFFECTIVENESS OF THE AC PANEL PROTECTORS.
Particularly important is the length of the connecting leads (see page 4).
2
7
ZONEMASTER Con guration
60A
N
L2
L1
L3
L1 L2
L3 G
N
and Schematic Connection Diagrams
277/480 THREE PHASE 4W WYE 220/380 THREE PHASE 4W WYE 240/415 THREE PHASE 4W WYE
STATUS INDICATORS
The ZoneMaster units have comprehensive, continuous visual status monitoring present on each module.
Status Full Reduced No No Power to High N-G
Indicated Protection (Standby) Protection Protector Voltage* Present Protection
LED Green Red Red Green Red & Green Indicator LED Lit LED Lit LED Lit LED Out LED Lit
Power/Protection
Indicator
REMOTE INDICATORS
A remote indication of the reduced protection state is available as a nor ­mally open or normally closed dry contact.
*WARNING: OF HIGH NEUTRAL TO GROUND VOLTAGE
On certain models, if both Red and Green lights are on, consult a qualifi ed
6
electrical contractor to check the integrity of the building wiring.
3
MAINTENANCE
At intervals not exceeding two months, check:
1. Status indication lights
2. Conditions of connecting cables and terminals
Module Replacement
WARNING: Before opening the access panel,
ensure that the AC supply has been disconnected.
Unplug the remote contact connector at the top of the module. Remove the mounting nuts at the top and bottom of the module. The protection module can now be removed.
WARNING: Replace the defective module with a module
having the same color label and voltage rating.
Installation of the replacement module is the reverse of the above pro­cedure. Final step, check that all cable connections are secure and nuts are tightened. Do not overtighten.
NOTE: No customer serviceable parts inside. Opening module WILL void Warranty
Copyright 1996© By Atlantic Scientifi c Corporation
All Rights Reserved
Printed in U.S.A.
For more information please contact your local MTL offi ce
or visit our web site at www.mtlsurge.com
Installation Instructions
& User Manual
ZONEMASTER SERIES
AC Panel Transient Voltage Surge Suppressors
The Americas: +1 800 835 7075 UK: +44 (0)1582 723633 Singapore: +65 6 487 7887
801482 Rev D 6/06/08
The Netherlands: +31 (0)481 450250 Italy: +39 (0)2 6180 2011 Australia: +61 (0)8 9455 2994 India: +91 (0)44 450 1660
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