Instruction Manual

Mounting
975-0400-01-01 Revision H 2–3
This manual is for use by qualified personnel only.
Effects of array voltages outside of the MPPT operational window are shown in
Table 2-1.
Mounting
The instructions in this chapter are applicable to a typical stand-alone
installation. Installation procedures will vary according to your specific
application. For special applications, consult a qualified electrician.
If installing the solar charge controller as part of an XW+ system, see the
“Network Installation” on page 2–25 for more information.
Choosing a Location
Table 2 - 1 MPPT Operational Window
Voltage Effect of Array Voltage
Charge Controller
Mode
V
oc
< V
batt
(system battery voltage)
Charge controller does
operate.
Low Light
V
MPP
< V
batt
Harvest of solar energy less
than optimal.
Charging
V
MPP
= V
batt
to 120 VDC Maximum harvest of solar
energy.
Charging
(MPPT window)
120 VDC < V
MPP
< 140
VDC
Charge controller reduces
the charging current to
protect the unit from voltage
spikes.
Input voltage
derating
V
MPP
> 140 VDC
(or V
oc
> 140 VDC)
Charge controller shuts
down. Unit may be
damaged if V
oc
> 150 V.
Over-voltage fault
Important: Installations must be compliant with all local electrical codes.
Installation of this equipment should only be performed by a qualified electrician
or by a Certified Renewable Energy (RE) System installer.
WARNING
HAZARD OF ELECTRIC SHOCK, BURN, FIRE, AND EXPLOSION
RISK OF EQUIPMENT DAMAGE
The solar charge controller must be mounted vertically and installed indoors in
a dry, protected location away from flammable materials, sources of high
temperature, moisture, and vibration. The location must also be sheltered from
direct sunlight, dust, and wind-blown debris.
Failure to follow these instructions can result in death or serious injury.