Winco PSS75LS/B - Manual (Page 9)

60706-173 Page 7
5234-00
Three phase unit shown, for single phase
wiring disregard L-2, T-2, G-2.
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***** WARNING *****
*************
FIRE HAZARD - All wiring must be done by a licensed electri-
cian, and must conform to the national electrical code and comply
with all state and local codes and regulations. Check with the
local authorities before proceeding!
PSS50LS - The Automatic Transfer Switch typically shipped with
the PSS50LS system has a 230 Amp line side contactor installed
to handle your normal power needs and a 230 Amp generator
side contactor to handle the emergency generator output. Before
installing the A.T.S. you must first ensure that the 230 Amp line
side contactor will be sufficient to handle your complete service.
See Figure 5. (i.e. the main line breaker must not be larger than
230 Amps) If you have 250, 300 Amp or larger system, you will
not be able to transfer the complete electrical system. In this
case it will be necessary to install a secondary emergency
distribution panel or purchase a larger transfer switch.
PSS75LS - The Automatic Transfer Switch typically shipped with
the PSS75LS system has a 400 Amp line side contactor installed
to handle your normal power needs and a 320 Amp generator
side contactor to handle the emergency generator output. Before
installing the A.T.S. you must first ensure that the 400 Amp line
side contactor will be sufficient to handle your complete service.
See Figure 5. (i.e. the main line breaker must not be larger than
400 Amps) If you have 500, 600 Amp or larger system, you will
.1/74-#
not be able to transfer the complete electrical system. In this
case it will be necessary to install a secondary emergency
distribution panel or purchase a larger transfer switch.
*************
***** WARNING *****
*************
PERSONAL INJURY - Be certain the operation selector switch
on the front of the A.T.S. Control is in the “stop” position and the
main power switch “off”. For your own protection, verify these
important safety precautions yourself with reliable instruments
before proceeding.
A.C. ELECTRICAL CONNECTIONS
WINCO Non-UL Only
Single Phase
The standby generator terminals in the A.T.S. are marked
“GENERATOR - G1, G-N, G3”. The “hot” leads G1 and G3 wire
directly to the top lugs on the generator side contactor, terminals
G1 and G3. The G-N connection is made to the lug on the
standoff just to the right of the generator side contactor.
The line terminals in the A.T.S. are marked “LINE - L1, L-N, L3”.
The “hot” leads L1 and L3 will wire directly to the top lugs on the
line side contactor. The L-N connection will be made on the
stand-off just to the left of the line side contactor.
The load terminals in the A.T.S. are marked “LOAD - T1, T-N,
T3”. The “hot” leads T1 and T3 will wire directly to the lower lugs
on the line side contactor. Jumper leads have already been
installed between the lower lugs on the line side and the lower
lugs on the generator side contactors. The T-N connection will
be made on the stand-off just to the left of the contactor.
An equipment grounding lug is provided just above the
T-N connection for your use in grounding the transfer switch.
Three Phase
The standby generator terminals in the A.T.S. are marked
“GENERATOR - G1, G2, G3 and G-N. The “hot” leads G1 G2
and G3 wire directly to the generator side contactor, terminals
G1, G2 and G3. The G-N connection is made to the lug on the
standoff just to the right of the generator side contactor.
The line terminals in the A.T.S. are marked “LINE - L1, L2, L3 and
L-N”. The “hot” leads L1, L2 and L3 will wire directly to the top
lugs on the line side contactor. The L-N connection will be made
on the standoff just to the left of the contactor.
The load terminals in the A.T.S. are marked “LOAD - T1, T2, T3
and T-N”. The “hot” leads T1, T2 and T3 will wire directly to the
lower lugs on the line side contactor. Jumper leads have already
been installed between the lower lugs on the line side and the
lower lugs on the generator side contactors. The T-N connection
will be made on the standoff just to the left of the contactor.
An equipment grounding lug is provided just above the
T-N connection for your use in grounding the transfer switch.
Service
Entrance