Mounting
MPPT Voltage Range
The XW Solar Charge Controller maximum power point tracking algorithm maximizes the output power of PV arrays as long as the operating voltage is within the MPPT operational window. Ensure that the PV array used in the system operates within the MPPT operational window.
Effects of array voltages outside of the MPPT operational window are shown in Table
Table 4-1 MPPT Operational Window
|
|
| XW Solar Charge |
Voltage | Effect of Array Voltage | Controller Mode | |
|
|
| |
Voc < Battnom | Charge Controller not operating. | Low Light | |
(system battery voltage) |
|
| |
VMPP = Battnom to 120 Vdc | Maximum harvest of solar energy. | Charging | |
|
|
| (MPPT window) |
120 Vdc < VMPP < 140 Vdc | Charge Controller reduces the output | Thermal Derating | |
|
| current limit to protect the unit from voltage |
|
|
| spikes. |
|
VMPP > 140 Vdc | Charge Controller shuts down. Unit may be | ||
(or V | > 140 Vdc) | damaged if Voc > 150 V. |
|
oc |
|
| |
Mounting
The instructions in this section apply to an installation including the power distribution panel. Installation procedures will vary according to your specific application. For special applications, consult a qualified electrician or your Xantrex Certified Dealer.
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.
Choosing a Location
The XW Solar Charge Controller is designed to be mounted vertically to the side or the top of the power distribution panel.
The XW Solar Charge Controller must be installed indoors in a dry, protected location away from flammable materials, sources of high temperature, moisture, and vibration, and direct sunlight. The location must also be sheltered from direct sunlight, rain, snow, and
CAUTION: Equipment Damage
Never install the XW Solar Charge Controller where it is exposed to salt water spray. Exposure to salt water will void the warranty and may cause a malfunction or a shock hazard.
