I.B. ATS-V003
Page 7
Effective 6/98
SECTION 3: EQUIPMENT DESCRIPTION
3.1 GENERAL
Cutler-Hammer transfer switch equipment is available in
four different configurations:
• Automatic Transfer Switch
• Basic Transfer Switch
• Non-Automatic Transfer Switch (Manually Operated)
• Non-Automatic Transfer Switch (Electrically Operated)
Refer to Section 1 for a discussion of the four types.
Each transfer switch is usually supplied in an enclosure,
although unmounted sub-assemblies can be supplied for
mounting by the customer. Since the enclosed automatic
transfer switch encompasses all transfer switch equip-
ment possibilities, it is the only specific type that will be
discussed in this section.
The enclosed automatic transfer switch consists of three
basic panels interconnected through connector plugs
and mounted in an enclosure (Figures 1-3, 1-4, 4-4 and
4-5):
• Power Panel
• Voltage Selection Panel
• Logic Panel
- IQ Transfer
- Solid State
- Micro-processor based
The components comprising the three panels are installed
in accordance with the specific requirements of the circuit
being controlled. Each transfer switch is, therefore, tailor-
made to a specific application.
3.2 POWER PANEL
The power panel consists of a means for making load,
power and neutral connections, the main contacts and
the transfer mechanism all on one steel base plate
(Figures 3-1 and 3-2).
Figure 3-1 Typical Vertical Design Power Panel
(Unmounted)
Figure 3-2 Typical Horizontal Design Power Panel
(Mounted)
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