Nedap PowerRouter PR50SB-PR/S24, Installation Manual

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4 Installation PowerRouter • Back-up / Stand-alone • Installation Manual
22
EN
DANGER
The wires from the solar panels are always energised.
CAUTION
• Do not connect a single solar panel string to both solar panel string terminals simultaneously (parallel
connection).
• Do not connect a single solar panel string to both solar panel string terminals in series.
• To prevent static charge you must ground the supporting frame of your solar panels. Read the
instructions of the manufacturer.
• Solar panel strings may be grounded (negative) with a 66 kOhm resistor, or grounded (positive) with a
66 kOhm resistor and a diode in series. Grounding sets can be orderd via your local Business
Partner.
i
The PowerRouter PR30SB model has one solar panel string input.
4.7 Connect the 24V lead-acid batteries
See figure 3 for the connection overview.
1. Install a Battery Disconnect Switch (2-pole isolation) between the PowerRouter and the batteries. Use
battery cables with a cross sectional area of 70 mm
2
to 95 mm
2
and a maximum length of 2.5 m per
cable.
2. Install a fuse (300 A slow-blow) in series with the positive battery cable. It must be installed on a fixed
surface, as close as possible to the battery.
3. Strip approximately 25 mm of insulation from the cable.
4. Insert the cable into the terminal of the PowerRouter (red to the positive terminal, black to the
negative terminal).
5. Tighten the cable connection with a torque between 15 Nm and 20 Nm.
6. Use cable lug (eyelet terminal) on the other end of the battery cable.
7. Insulate the battery poles.
8. Clean the surface where you will place the temparature sensor.
9. Stick the self-adhesive battery temperature sensor onto the battery near the (+) pole.
10. Connect the sensor wires to the TMPS (red wire) and GND (black wire) terminals of the PowerRouter.
WARNING
• Batteries must be located in designated battery areas, and must comply with the local requirements.
This is because of a possible build-up of hydrogen gas and battery acid.
• Do not smoke or bring open flames near hydrogen gas.