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Home: SLE Solar Catalog: Solar: Charge Controllers:
Flexcharge™ NC25A Ultra High Efficiency Charge Controller (Regulator)
Cat. No. SC20NC25/xxF
Weight 2 lbs | |
The
NC25A-(X) is series regulator designed for alternative energy charging
systems ranging in size from 0.1A to 25A. It is the ideal
regulator for Solar (PV) and Permanent Magnet Generators (Including
outboard motors and smaller wind generators). The NC25A also includes
the Charge Divert feature. Charge Divert allows you to use the
excess charging source energy for other tasks, or for placing a load on
permanent magnet charging sources such as wind generators to prevent
over speed conditions. The Divert connection is only activated
after the charging source is making energy and the batteries are not
using the energy (i.e. A wind generator will not be starting into the
divert load). Divert Resistor This controller can easily and
inexpensively be expanded to handle one or more banks of 100A charging
sources. (1000A max charging current in this
configuration). Multiple battery banks can be charged with the
use of a standard battery charging isolators.
Years prior to the sale of the first NC25A, the SES Flexcharge product
development team took a hard look at what a new alternative energy
charge controller's performance level would need to be to give the user
the best possible controller for there needs. From that effort
came the following design criteria;
Charge Efficiency
Highest Possible Charging Efficiency . The NC25A holds a Patent for its innovative and efficient charging circuitry.
Most alternative energy charge controllers operate at an efficiency of
97%. Off hand, this sounds pretty good but lets go through the
numbers for a typical charge controller.
Power Wasted = (Total Charging Current) x (100% -
96%) x (Typical Battery
Voltage). P = 25A x
0.04 x 12.6V = 12.6W of wasted energy.
The NC25A operates at 99.5% typical charging efficiency. (99.9% at its best).
P = 25A x 0.005 x 12.6V = 1.57W
In comparing the numbers we see a 11 watt gain in charging energy that
is available for your battery bank with the NC25A over the Typical
Charge controller.
Question: How much does an 11W solar panel
cost? This is precisely why controller
efficiency is so critical.
With a peak charging efficiency of 99.9% and an operating current of
only 4mA, more of the systems charging energy will get through a NC25A
into your batteries than with any other regulator on the market.
Models are available for charging 12V, 24V, 36V, and 48V systems.
Use with Lead Acid, Gel, or Flooded Nicad battery technologies.
Dependability
There should never be such thing as a compromise to dependability when
it comes to an alternative energy system charge controller as these
systems are often located in hard to reach locations (mountain tops,
ocean navigation buoys, polar regions, etc...). We took great
care to design the NC25 for long term unattended operation;
extensive transient voltage protection; high steady-state voltage
protection (it is not affected by continuous charging input voltages up
to 100V, the point where the transient voltage protection kicks in);
reverse polarity protection on battery connections; fully sealed
electronics for 100% humidity operation; etc... The NC25A is
designed for Install and Forget operation.operation; etc...
Simple to Operate
The NC25A includes easy to read Charge and Divert Indicators, an
adjustment for peak charge voltage, and an easy to use terminal strip
for the system wire connections. Because the system charge
controller is usually located near the battery bank in a remote
structure we chose not to incorporate power consuming monitors such as
volt meters or current monitors. If this type monitoring
equipment is desired it should be installed after the system disconnect
switch and located where you can view them.
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SL Enterprises
