Eaton Cutler-Hammer NTV Series Instruction Bulletin page 3

List of Figures
Figure Title
1 Typical Automatic Transfer Switch Equipment Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Typical Load Transfer Switch (Circuit Breaker Type) Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Vertical Design Automatic Transfer Switch Equipment with Deadfront Cover in Place Over Power Panel
(225 - 1200 Amperes). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Vertical Design Automatic Transfer Switch Equipment Shown with Deadfront Cover Removed
(225 - 1200 Amperes). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Horizontal Design Automatic Transfer Switch Equipment (30 - 100 Amperes) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical Vertical Design Power Panel (Unmounted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Typical Horizontal Design Power Panel (Mounted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 Molded Case Switches Mounted in Vertical Design (Transfer Mechanism
Removed for Clarity) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9 Vertical Design Voltage Selection Panel with Voltage Being Selected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
10 Typical Logic Panel (Door Mounted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
11 Charger Mounting Dimensions in Inches (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
12 Typical NEMA Type 1 Enclosure (Door Closed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13 Vertical Design Power Panel Mounting Reference in Inches (mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
14 Vertical Design Load Lug Assembly Shown Mounted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
15 Typical (225 - 1200 Amperes) Vertical Design Transfer Switch Equipment
(Door Open and Deadfront Shield Removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
16 Typical (30 - 100 Amperes) Horizontal Design Transfer Switch Equipment (Door Open). . . . . . . . . . . . . . . . . . . 18
17 Line Voltage Plug and Receptacles (Shown with Covers Removed) for Horizontal Design . . . . . . . . . . . . . . . . . 20
18 Transfer Switch Manual Operating Handle in Use on Vertical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
19 Indicator Wheel Shown Mounted in Mechanism with Motor Mounted Under Wheel . . . . . . . . . . . . . . . . . . . . . 21
20 Indicator Wheel Indicating Neutral Position on Vertical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
21 Motor Disconnect Being Unplugged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
22 Electrical Operation Pushbutton and Position Indicating Lights Shown Mounted . . . . . . . . . . . . . . . . . . . . . . . . 23
List of Tables
Table Title
1 Transfer Switch Catalog Number Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Transfer Switch Equipment Enclosures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Bolted Bus Connection Torque Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4 Transfer Switch Equipment Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5 Periodic Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
IB01602007E
O&M Manual for
Non-Automatic Transfer
Switches (30 - 1200 Amperes)
For more information visit: www.cutler-hammer.eaton.com
Instruction Bulletin
Effective: June 2003 Page 3
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