Power Module Installation
Read all precautions at the beginning of this manual and the individual component manuals before
attempting to install the system. Because of tool clearances needed to make connections, It is easiest to
make all external connections to the PM (charge controllers, PV array, and AC inputs/outputs, before
installing the inverter. As a general rule, connections should be made along the back panel, than the side
panels, and lastly to equipment mounted on the tray.
Install the inverter to the module tray using all six stainless steel bolts, washers and nuts supplied. Insure
that the DC and AC sides of the inverter correspond with the DC and AC breaker locations in the Power
Module. When all six fasteners are secured there is no need for additional bracing of the module tray, since
the inverter chassis will add stiffness. Torque to 79 inch-pounds.
Connect the battery positive cable from the battery disconnect and the battery positive cables from all
charge controllers to the inverter DC positive lug. Torque nut to 12 ft-lbs and place a protective cover over
the terminal.
Connect the battery negative cable from the inverter, and the battery negative cables from all charge
controllers to the inverter DC negative bonding block (DCBB page ). Torque nut to 12 ft-lbs and place
protective cover over the terminal.
Make AC connections from the AC input/output/bypass inverter breaker to the inverter. All wires are marked
identical to the labels at the connectors inside the inverter. AC Utility In should be connected into AC1 and,
if a generator is used as an additional AC input it should be connected to AC2, (it will normally have an
additional AC input/output/bypass breaker).
Grounding Parameters: Connect D.C. Ground wire (8 AWG) to grounding rod. Connect the A.C. Ground at
the main AC panel ground connection if used in a residential or commercial application. NEC and local
codes determine the complete grounding requirements.
Powering Up the System
Before applying power to the Power Module for the first time, take time to check and confirm the following
key items:
1. Check to see that the AC loads and AC source are connected properly into the inverter bypass box.
2. Confirm that the battery cable polarities are proper. Connection with improper polarity is an expensive
mistake, very obvious and not covered under warranty.
3. Check the PV array connections at the array and at the Power Module. Be sure the PV array positive is
connected to the bottom of the PV array disconnect as illustrated.
4. Confirm that all connections are tight and wire size is appropriate as described above and shown on the
installation diagram. Once these checks have been completed, it is time to apply power to the system. Do so
as follows:
A. Turn the battery DC disconnect(s) to the on (up) position.
B. Turn the solar array disconnect(s) to the on (up) position.
C. Turn the inverter(s) on as outlined in the individual component manual, and check for proper
operation. If the inverter does not power up, go to step F.
D. Unlock the main AC breaker that will feed the inverter and activate the AC source used to provide
power to the system (generator or main breaker).
Copyright
Trace Engineering Co., Inc.
Telephone (360) 435-8826
Part Number 3471
5916 195th Street, NE
Fax (360) 435-2229
Released: Thursday, April 29, 1999
Arlington, WA 98223 USA
Powering Up the System
3-1
