Voltage Selection Panel; Logic Panel; Vertical Design Voltage Selection Panel With Voltage Being Selected; Typical Logic Panel (Door Mounted) - Eaton Cutler-Hammer NTV Series Instruction Bulletin

3.3 Voltage Selection Panel

The voltage selection panel is a multi-tap enclosed trans-
former mounted in the enclosure (Figure 9). Seven front
accessible voltages taps from 208 – 600 Vac satisfy
any required application voltage. A quick change capability
from one voltage to another is provided by a small
disconnect plug.

3.4 Logic Panel

The logic panel provides the ability to transfer from Source 1
to Source 2 and back when that source is at least 75% of
nominal voltage. It also provides indication of source avail-
ability, switch position and trip indication (if applicable).
Figure 9. Vertical Design Voltage Selection Panel with Voltage
Being Selected
IB01602007E
O&M Manual for
Non-Automatic Transfer
Switches (30 – 1200 Amperes)
Figure 10. Typical Logic Panel (Door Mounted)
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Instruction Bulletin
Effective: June 2003 Page 11