Specialty Concepts PPC - Manual (Page 3)

R E L A T E D S Y S T E M E Q U I P M E N T
The PPC is an integral part of a solar electric power system that includes a PV solar array, a
battery and a load. These items should be installed in accordance with the National Electrical
Code, and with the instructions provided by the equipment supplier.
SOLAR ARRAY PANELS: The PPC is compatible with all makes and models of PV panels,
provided the open circuit voltage and the maximum power current of the array does not
exceed the maximum open circuit voltage (Array Voltage, Max Voc) and the maximum charge
current (Charge Current, Max) specifications for the PPC being used.
HIGHER CHARGING CURRENTS : For arrays exceeding the maximum power current of the
PPC, the array can be divided into smaller parallel sub-arrays. A PPC can be wired in parallel
to each sub-array, provided the sub-arrays do not exceed the rating of the individual PPC.
BATTERIES: The standard PPC is designed to be used with the most common lead-acid
batteries. These are wet cell batteries using pure lead, lead antinomy and/or lead calcium
grids. For sealed, maintenance free batteries, or vented pocket plate nickel-cadmium
batteries, the charging set-points should be adjusted to maximize performance and battery
life. For sealed, maintenance free batteries or nickel cadmium batteries, consult the battery
manufacturer for recommended set-points and refer to Table 2 for appropriate settings.
LOADS: The load is considered the item or equipment that the PV system is powering. System
loads such as lights, radios, DC/AC inverters, etc. must be rated for the proper DC input
voltage. DC loads not exceeding the rated PPC load current (see specification section) can be
connected to the load terminals of the PPC and they will automatically be disconnected in the
event of a low voltage condition. Higher current, or inductive loads such as pumps, motors or
inverters should be connected directly to the battery, using properly rated over current
protection devices (fuses or circuit breakers).
OTHER CHARGING SOURCES: Do not use the PPC to regulate a power source other than a
photovoltaic array, such as a hydro or wind generator/alternator or an AC battery charger.
This could result in damage to the PPC and/or the generating equipment. Connect other
charging sources with their own regulation devices directly to the battery, using properly rated
over current protection devices.
The PPC and array can remain connected to a battery being charged by other sources,
(alternator, battery charger, etc.) without damage to the control or solar array.