Campbell Scientific Morningstar SunSaver-10 10A 12V Regulator - Manual (Page 7)

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5.0 INSTALLATION INSTRUCTIONS
5.1 R ATINGS AND L IMITS
• The SunSaver is rated for 12 volt (or 24 volt) PV systems. Do
not connect to a PV array with open circuit voltage (Voc)
greater than 25 (or 44) volts.
• Maximum array short circuit current rating:
S
UN
S
AVER
-6 8.1 amps
S UN S AVER -10 12.5 amps
S
UN
S
AVER
-20 25.0 amps
• Because the SunSaver is a series controller, the PV current
rating is specified at the PV array’s peak power (Ipp). The
SunSaver does NOT short the PV array for regulation, and
it is not necessary to derate the controller for short-circuit
current (Isc) as is commonly done with shunt controllers.
• SunSaver models with an automatic low voltage load discon-
nect function (LVD) are rated for either 6, 10 or 20 amp loads
depending on the model.
• SunSaver models without an LVD capability are rated for a
maximum load of 10 amps. All loads connected to the SunSaver
LOAD terminals should not exceed 10 amps of current.
N OTE : It is not necessary to use the SunSaver load
terminals. Loads that exceed the load rating of the
SunSaver can be connected directly to the battery.
• The rated PV input current and the rated load current can
both be exceeded by 25% for up to 5 minutes. This 25%
overload will reduce the safety margins for surges and will
cause heating that can shorten the life of the controller.
For the reasons noted above, these higher overload ratings
should NOT be used for routine operation. They are only to
note overload capability for system design purposes.
• The SunSaver is designed to operate continuously in 60°C
ambient temperatures. However, do not install the controller
near heat generating sources or in direct sun. This could
cause the temperature rating to be exceeded and damage
the controller.
• The date of manufacture can be found on the serial number
(bottom of case). The first 4 digits are the year and week.