Winco PSS12000, Инструкция по установке и эксплуатации, Страница: 12 / 29

PAGE 10
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 voltage
regulator 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 re-
quired. 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 are prewired 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” leads L1 and L3 will wire directly to
the upper lugs on the line side contactor. 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 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 genera-
tor side contactors. The T-N connection 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
configuration 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 installa-
tion, 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:
It is an excellent idea to install a disconnect in the
incoming power line wiring directly in front of the A.T.S.
panel. This will allow you to test the generator under
load. Should you ever have to work on the switch,
you will be able to disconnect the power and work on
the switch cold without having the power company pull
your meter.
To wire the automatic transfer switch into the existing
wiring, first determine which circuits will be on the
emergency load circuit. If the entire load is to be
transferred, the transfer switch can be wired in directly
after the watt-hour meter or main entrance providing
the service entrance ampere rating is within the
transfer switch’s rated capability.
If only specific circuits are to be powered under emer-
gency power failure conditions, an additional distribu-
tion panel designated “emergency distribution panel”
must be installed.
All selected emergency circuits are removed from main
distribution panels and reinstalled in the emergency
distribution panel. Suggested circuits: freezer,
refrigerator, furnace, emergency lights, sump pump,
emergency outlet circuits, etc. Total running load must
not exceed generator rating.