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BATTERY SIZING
PUMP SIZE (WATTS) Minimum battery size Combined maximum battery size
250 1 x NorthStar NSB 60FT 400 Ah
400 1 x NorthStar NSB 100FT 700 Ah
750 1 x NorthStar NSB 190FT 1200 Ah
BATTERY CHECKING WITH VICTRON BMV600S BATTERY MONITOR
The BMV600S provides real time information for the battery or bank of multiple batteries:
• Battery voltage
• Discharge current
• Capacity as a %
Please refer to product Operational Manual.
BATTERY CHECKING WITH BATTERY TESTER
To check the voltages of a battery, (the following is only a guide to the battery performance) test the battery
voltage with the Power Inverter on. Voltage should be approximately 13.5-14.5 Volts. Turn off the Power Inverter,
load the battery and test the new voltage (to load the battery the pump must be on and pumping water). The
new voltage should read between 12 and 13 Volts. If the battery reads below 11 Volts, the battery should be
tested using professional testing equipment and possibly replaced.
CABLES
Battery cables have to carry very large currents and will get warm if the inverter is at full capacity. The cables
must be checked for any damage and not used if damaged. If two batteries are used, the linking cables must
NOT be smaller in size than the cables supplied with the Power Inverter. Power Inverter cables should not be
extended as the voltage drop may affect the unit’s electronics.
PERFORMANCE EXAMPLES
The table below is test data from our pump testing rig and conrms the volumes of water that should be
removed with the specied system. The test rig was set with a pumping head of 4 m with 4 pump starts per
hour, approximately 66 litres of water discharged at each start, water discharge temperature of 20ºC and
standard DC power cables. 400 watt pump ow rate was 137 litres per minute. 750 watt pump ow rate was 225
litres per minute, measured by ow per metre.
400W Pumps 750W Pumps
Start
Volts
Starts Hours Litres
Start
Volts
Starts Hours Litres
1 x NorthStar NSB 60FT 12.84 56 14.2 3825 12.98 48 12.0 3154
2 x NorthStar NSB 60FT 12.71 104 26.6 7035 12.84 102 25.7 6879
1 x NorthStar NSB 100FT 12.98 106 27.1 7295 13.08 87 21.9 5803
2 x NorthStar NSB 100FT 12.85 212 54.0 14417 12.90 180 45.5 11992
1 x NorthStar NSB 190FT 12.80 182 46.7 12394 12.82 162 41.0 11002
2 x NorthStar NSB 190FT 12.84 395 101.5 26822 13.10 353 89.6 23936
1 x NorthStar NSB 190FT 12.80 2568 642.0 282480 13.10 1632 408.0 244800
POWER INVERTER SIZING
PUMP SIZE (WATTS) POWER INVERTER SIZE
250 MultiPlus 12/800/35
400 MultiPlus 12/1200/50
750 MultiPlus 12/3000/120
Use only Newton Victron Power Inverters with this Control Panel. Newton Power Inverters have an adaptive four-
stage charging circuit: Bulk - for when the battery is very depleted; Absorption - for a nal top up charge, Float -
a trickle-charge that replaces lost charge and nally, storage mode. This 4th stage will reduce the oat voltage to
that of an open circuit of a fully charged battery if a discharge has not happened within 24 hours.
Corrosion and gassing are therefore reduced and after one week the absorption level is raised back up to
compensate for self discharge and will in-turn stir up the internal electrolyte.
The Inverters are silent, except when in Bulk Mode.
INSTALLATION OF POWER INVERTERS
The Inverter/Charger units are mains powered and should be installed by persons who are electrically competent
by way of appropriate training to either t a fused plug or wire directly to a fused spur. Knowledge of DC input
by battery and the connection of DC battery leads to both the battery/batteries and the Inverter/Charger is
required.
The product must be installed in a dry and well-ventilated area, as close as possible to the batteries. There
should be a clear space of at least 100 mm around the appliance for cooling.
Excessively high ambient temperature will result in the following:
• Reduced service life
• Reduced charging current
• Reduced peak capacity, or shutdown of the inverter
The unit must be installed in a vertical position. Never mount the appliance directly above the batteries.
Always read the Newton Victron Inverter Data Sheet and Operational Manual prior to installation
SIZING OF NEWTON VICTRON POWER INVERTERS SIZING OF NEWTON POWER CONVERTERS
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