Winco PSS20000/C - Manual (Page 12)

PAGE 10
generator to the A.T.S. as you will need to run both a
neutral and a ground lead. All wires must be sized to
handle 50 amps minimum, the type of wire you use will
determine the gauge required. Consult your local wire
supplier for proper gauge and type for your area.
A.T.S .Connections
The standby generator terminals in the A.T.S are
marked “GENERATOR - G1, G-N, G3”. The “hot” leads G1
and G3 from the generator are wired to the generator
side contactor, terminals G1 and G3.
The line terminals in the A.T.S. are marked “LINE - L1,
L-N, L3”. The “hot” line leads L1 and L3 are wired to the
line side contactor, terminals L1 and L3.
The load terminals in the A.T.S. are marked “LOAD - T1,
T-N, T3”. The “hot” leads T1 and T3 are prewired to the
bottom side of both the line side and the generator side
contactor.
If you are using a separate ground lead it is routed to
the ground lug in the A.T.S.
PSS20000 Single Phase
Generator Connections
To gain access to the customer connections, remove
the panel the warning light and the selector switch are
mounted on, inside the left hand access door. Both AC
and DC connections are made behind this panel. Three
AC power leads are required between the generator and
the A.T.S. The power leads coming into this connection
box from the generator end are run in parallel. (i.e. G1-A
and G1-B are both connected to the G1 lead and G3-A
and G3-B are both connected to the G3 lead going to the
A.T.S.) The engine control leads are currently connected
to some of the generator leads. These leads must
remain with the generator leads they are connected to.
The neutral lead (GN-A & GN-B) are shipped bonded to
the ground lug. If your local code requires the generator
to be wired with an isolated neutral, remove this neutral
to ground bond. This will require you to run four AC leads
from the generator to the A.T.S. as you will need to run
both a neutral and a ground lead. All wires must be sized
to handle 83 amps minimum, the type of wire you use
will determine the gauge required. Consult your local
wire supplier for proper gauge and type for your area.
A.T.S. Connections
The standby generator terminals in the A.T.S are
marked “GENERATOR - G1, G-N, G3”. The “hot” leads
G1 and G3 from the generator are wired to the generator
side contactor, terminals G1 and G3.
The line terminals in the A.T.S. are marked “LINE - L1,
L-N, L3”. The “hot” load leads L1 and L3 are wired line
side contactor, terminals L1 and L3. The L-N connection
will be made on the stand-off just to the left of the
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 lugs on bottom the generator side contactor. Copper
jumper straps have already been installed between the
lower lugs on the generator contactor and the upper
terminals on the line side contactors. The T-N connec-
tion will be made on the stand-off just to the left of the
contactor.
PSS12000 & PSS20000 Three Phase
The three phase units are installed the same as the
single phase units above, except a third power lead is
added, (i.e. a G2 from the generator, L2 on the line side
and a T2 on the load side). In the 120/240 volt configura-
tion the G3, L3 and T3 will be the high voltage (wild) leg.
The other difference is a three phase power monitor
has been installed in the A.T.S. to monitor each phase for
low voltage. This three phase monitor is phase rotation
sensitive and comes from the factory set up for A-B-C
phase rotation. If you have trouble getting the A.T.S. to
pick-up the line power on initial installation, try switching
the A and B phase on the monitor. Your rotation may be
C-B-A. If so, be sure to match the generator rotation to
your current line rotation or your three phase motors will
try to turn backwards.
*************
***** WARNING *****
*************
When installing a Three Phase 240 Volt Delta system be
sure you know which lead is the high voltage leg (208
Volt line to neutral). The generator has the high voltage
lead connected at G3.
INSTALLATION NOTES
The load current carrying wires (L) and (T) must be
sized to handle the maximum load current without
excessive voltage drop. By code, the wire must be heavy
enough to handle the full current rating of the main line
circuit-breaker (or fuse) in the entrance (or sub-panel)
protecting the contactor switch.
All wires should be installed in rigid or flexible conduit.
(Knockouts are provided in the control box)
Because of the many different types of service, feeder,
and distribution equipment, no specific wiring instruc-
tions can be provided. It is, however, recommended that
only copper wire be used. In all cases it is essential that
while the load is connected to the generator, there can be
absolutely no feedback from the generator to the power
line or the power line to the generator. When properly
installed, the normal A.T.S. Control and safety systems
will eliminate all paths for feedback. Check with your
local electrical inspector on applicable local, state and
federal codes.
NOTE: