Cutler-Hammer ATVISPE31000XSU, Instructions Manual

Page: 16 / 44

I.B. ATS-SD02
Page 10
Effective 5/98
3.4 LOGIC PANEL
The logic panel provides the intelligence and superviso-
ry circuits which constantly monitor the condition of both
normal and emergency power sources thus providing
the required intelligence for transfer operations (Figures
3-6 and 3-7). Different possibilities are available with
detailed information presented in separate documents:
• IQ Transfer Instruction Book
• Solid State Instruction Leaflet
3.5 NEUTRALS
All 2-pole and 3-pole transfer switches are equipped
with 100-percent-rated neutral connections (Figure 3-8).
Different lug configurations are available, Option 21A.
3.6 OPTIONS (NON-LOGIC PANEL)
Switch options, which are not part of the logic scheme,
are available to meet a variety of other application
requirements. Options are numbered with an associat-
ed description. More detailed selections that must be
made within a specific option are lettered. For available
options associated with the logic scheme, refer to the
specific logic document associated with the type of logic
selected.
Options are Underwriters Laboratories, Inc. listed,
except as noted, when supplied on UL Listed
Switches. If an option is selected that is Not UL
Listed, the switch Will Not Have A UL Label.
Not all options are available for all transfer switch
configurations. If in doubt, check Price List 29-920
for the availability of options for a specific transfer
switch design. The option numbers used here corre-
spond to the numbers used in the price list.
14. Relay Auxiliary Contact
The Normal power source relay is energized only when
the switch is in the Normal position and Normal power is
present. The Emergency power source relay is ener-
gized whenever the Emergency power source is present.
Figure 3-7 Typical Solid State Logic (Red Engine Start
Contact Identified by Pointer)
Figure 3-6 IQ Transfer