27
Battery Maintenance
Maintain the batteries in your battery storage system according to the battery
manufacturer’s recommendations. In particular, monitor the water level in the batteries
as described on the previous page.
Battery Temperature Sensor
A Battery Temperature Sensor (BTS) is included with the MPPTsolid charge controller.
Battery temperature affects the ideal charging voltage, the cooler the battery
temperature the higher the ideal charging voltage. MPPTsolid, with a properly installed
BTS, will protect the batteries from overcharging by adjusting the charging voltage to
match the battery temperature. One of the setup values in PowerWizard is the battery
temperature coefficient. This value should be supplied by the battery manufacturer and
used during setup. There is no need to use a minus sign when entering the coefficient.
The coefficient is the value recommended by the manufacturer times the number of
batteries in series.
The BTS should be firmly attached to a battery in a central part of the pack by double
sided tape, either on the side or on the top of the battery.
System Calculations
Loads
The first step in planning a PV system is to determine the load. What is the power
intended for? How much power will be required and for how long? There are many
resources available in print and on-line to help determine average and peak load
requirements. It is recommended that you use these resources to calculate anticipated
load requirements and that your system planner designs for load growth. Experience has
shown that loads rarely remain static over time, and most often increase. Once the load
characteristics are determined your system planner can make decisions about the
appropriate battery voltage, and hence the number and arrangement of batteries that
can meet the anticipated demands. This leads to the charging current and voltage
needed from the MPPTsolid to charge the batteries.
Maximum Voc
The maximum operating input voltage of the MPPTsolid is 230 V. Above this voltage the
unit will shut down to avoid damage. The absolute maximum input voltage the controller
can accept without damage is 250 V. In practice the actual voltage should never reach
the Voc point as MPPTsolid will be loading the array down to the maximum power point
at all times unless the batteries reach full charge and will not accept any more charge
current.
Summary of Contents for MPPTsolid
Page 2: ...2 Contents Bedienungsanleitung 3 21 User Manual 22 38 Manuel de l utilisateur 39 57 58 71...
Page 3: ...3 Ansichten Frontansicht R ckansicht...
Page 22: ...22 PanelView Front panelview Back panelview...
Page 33: ...33 Opening screen Opening screen with data logging enabled Help About...
Page 39: ...39 Diff rentes vues Vue panneau avant Vue panneau arri re...
Page 58: ...58...
Page 61: ...61 MPPTsolid MPPTsolid MPPTsolid MPPT MPPTsolid PowerWizard...
Page 68: ...68 edit OK Set MPPTsolid MPPTsolid Configuration Exit...
