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Instruction Bulletin
Page 2
Effective: June 2003
WARNING
READ AND UNDERSTAND THE
INSTRUCTIONS CONTAINED HERE-
INAFTER BEFORE ATTEMPTING
TO UNPACK, ASSEMBLE, OPERATE
OR MAINTAIN THIS EQUIPMENT.
HAZARDOUS VOLTAGES ARE
PRESENT INSIDE TRANSFER
SWITCH ENCLOSURES THAT CAN
CAUSE DEATH OR SEVERE PER-
SONAL INJURY. FOLLOW PROPER
INSTALLATION, OPERATION AND
MAINTENANCE PROCEDURES TO
AVOID THESE VOLTAGES.
TRANSFER SWITCH EQUIPMENT
COVERED BY THIS INSTRUCTION
BOOK IS DESIGNED AND TESTED TO
OPERATE WITHIN ITS NAMEPLATE
RATINGS. OPERATION OUTSIDE OF
THESE RATINGS MAY CAUSE THE
EQUIPMENT TO FAIL RESULTING
IN DEATH, SERIOUS BODILY INJURY
AND/OR PROPERTY DAMAGE. ALL
RESPONSIBLE PERSONNEL SHOULD
LOCATE THE DOOR MOUNTED
EQUIPMENT NAMEPLATE AND BE
FAMILIAR WITH THE INFORMATION
PROVIDED ON THE NAMEPLATE.
A TYPICAL EQUIPMENT NAMEPLATE
IS SHOWN IN FIGURE 1.
Automatic Transfer Switch
Cat No:
NTVEKDB0300X54
GO No:
Item:
1
Poles:
3
Amps: 300
Phase:
3
Hertz:
60
Figure 1. Typical Automatic Transfer Switch
Equipment Nameplate
Note: All possible contingencies which
may arise during installation, operation or
maintenance, and all details and variations
of this equipment do no purport to be
covered by these instructions. If further
information is desired by purchaser regard-
ing the particular installation, operation
or maintenance of particular equipment,
contact a Cutler-Hammer representative.
O&M Manual for
Non-Automatic Transfer
Switches (30 - 1200 Amperes)
Table of Contents
Description
1.1 Preliminary Comments and Safety Precautions . . . . . . . . . . . . . . . . . 4
1.1.1 Warranty and Liability Information . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1 Transfer Switch Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Environmental Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 Power Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2.1 Vertical Design Steel Base Plate. . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.2 Main Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2.3 Vertical Design Transfer Mechanism . . . . . . . . . . . . . . . . . . . . . . 10
3.2.4 Horizontal Design Transfer Mechanism . . . . . . . . . . . . . . . . . . . 10
3.3 Voltage Selection Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Logic Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.5 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Mounting Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
06/03
1 of 1
4.3 Mounting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Vertical Design Load Lug Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Volt:
480
Wire:
4
4.5 Power Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.7 Voltage Selection Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Vertical Design Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Horizontal Design Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4 Non-Automatic Operation (Electrically Operated) . . . . . . . . . . . . . . . . 23
6.1 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2 Problem Solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.1 Transfer Switch Appears Inoperative . . . . . . . . . . . . . . . . . . . . . 24
7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2 Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
For more information visit: www.cutler-hammer.eaton.com
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IB01602007E
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