IB01602007E
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Instruction Bulletin
Effective: June 2003
Page
3
O&M Manual for
Non-Automatic Transfer
Switches (30 – 1200 Amperes)
List of Figures
Figure
Title
Page
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
Page
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
