Charge Controlling
975-0400-01-01
1–7
Battery Temperature Compensation
The Battery Temperature Sensor (BTS) automatically adjusts the charging process
of the XW SCC. With the BTS installed, the XW SCC increases or decreases the
battery charging voltage depending on the temperature of the battery to optimize
the charge to the battery and to protect it from over-charge or damage. Using the
BTS can extend battery life and improve overall charging.
The BTS plugs into the BTS jack located inside the wiring compartment of the
XW SCC. The BTS can be installed on the negative battery post or on the side of
the battery.
If the BTS is not installed, the voltage settings for charging are based on one of
three temperature settings (Cold, Warm, or Hot) available on the XW SCC
configuration menu. See “Configuring Battery Characteristics and Battery
Charging” on page 3–5.
Only one BTS is required if multiple XW SCCs or a complete XW Power System
with XW Series Inverter/Chargers are networked together using Xanbus. All
networked XW Series devices share battery temperature information, and the BTS
can be connected to a XW SCC or an XW Inverter/Charger.
Equalization Charging
The XW SCC can be used to provide the battery bank with an equalize charge.
Equalization is a deliberate overcharge designed to return each battery cell to
optimum condition by reducing sulfation and stratification in the battery. The
equalization charge is generally performed only on flooded, vented (non-sealed or
“wet”) lead-acid batteries, as recommended by the battery manufacturer.
To avoid damaging your batteries, be sure to read all cautions and warnings
concerning equalization charging. For more information, see “Battery
Equalization” on page 4–13.
Figure 1-6
Battery Temperature Sensor
Important:
The XW SCC maximum output voltage is limited to 72 volts for a 60-volt
battery system, which is the bulk voltage setting for 60-volt batteries. Because of this
output limit, the XW SCC does not equalize 60-volt batteries.
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