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©
2017 Sensata Technologies
Installation
2.2.4 Wiring the Battery Bank
WARNING:
Lethal currents will be present if the positive and negative cables attached
to the battery bank touch each other. During the installation and wiring process, ensure
the cable ends are insulated or covered to prevent touching/shorting the cables.
CAUTION:
DO NOT connect the DC wires from the battery bank to the inverter until 1)
all DC and AC wiring is complete, 2) the correct DC and AC overcurrent protection has
been installed, and 3) the correct DC voltage and polarity have been veri
fi
ed.
Info:
For the MS-PAE Series inverter/charger to perform optimally, a minimum battery
bank of 200 AH is recommended for moderate loads (<1000W), and greater than 400
AH for heavy loads (
≥
1000W).
Depending upon the type of batteries you use in the installation (6 or 12 VDC), the batteries
must be wired in series, parallel, or series-parallel to provide the correct voltage (see Appendix
B – Battery Information for guidance on wiring batteries together). The interconnecting DC wires
must be sized and rated exactly the same as those that are used between the battery bank and
the inverter.
Place the batteries as close as practical to the inverter, preferably in an insulated and ventilated
enclosure. Allow adequate space above the batteries to access the terminals and vent caps (as
applicable). Also, allow at least 1” (2.5 cm) of space between the batteries to provide good air
fl
ow. DO NOT mount the batteries directly under the inverter.
Info:
To ensure the best performance from your inverter system, batteries should be of
the same size, type, rating, and age. Do not use old or untested batteries.
CAUTION:
Install batteries in a well-ventilated area. Batteries can produce explosive
gasses. For compartment/enclosure installations, always vent batteries to the outside.
2.2.5 Battery Temperature Sensor Installation and Wiring
The Battery Temperature Sensor (shown in Figure 2-7) provides the inverter with precise battery
temperature information to automatically adjust the battery charger’s bulk, absorb, and
fl
oat voltage
set-points. This allows the batteries to be correctly charged under extreme temperature changes.
If the temperature sensor is NOT installed, and the batteries are subjected to large temperature
changes, the battery life may be shortened.
To install the BTS:
1. Attach the ring terminal end of the Battery Temperature Sensor (BTS) to the negative battery
terminal (see Figure 2-5 for proper connection to the battery terminal).
2. Route the BTS cable to the inverter following existing wire runs.
3. Connect the RJ11 connector end of the BTS cable to the BTS port (yellow label) on the inverter.
FRONT VIEW
SIDE VIEW
~2" (5.1 cm)
(2.5 cm)
~1"
~½”
(1.3 cm)
0.375" diameter
(~1 cm)
Cable
~¾”
(1.9 cm)
Figure 2-7, Battery Temperature Sensor
