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4) If now, the AC pass-through Line Current is increased from 9A to 12A for more than 5 sec, the total
AC input Line Current will be 13A
(12A pass through Line C 1A AC side charging current
corresponding to 3.42A DC side charging current)
. The AC side charging current will be automatically
reduced from 1A
(corresponding to 3.42A DC side charging current)
to 0A. However, now the AC input
Line Current will still be 12A i.e. 2A more than the “GRID MAX” current setting of 10A for more than
5 sec. After 5 sec of operation under this condition, the EVO™ will operate as follows based the option
selected through parameter “INPUT OC PROTECT”
[See details of this parameter under Section 4.5.2.11 in
EVO-RC-PLUS Owner’s Manual]
o
Parameter “INPUT OC PROTECT” set in the Default option “0=Inverter”:
The EVO™ will switch over
to Inverter Mode to ensure that 12A AC load is maintained. If subsequently, the load reduces to 1A less
than the 10A setting of GRID MAX CURRENT for 5 sec, the EVO™ will switch back to Charging Mode
o
Parameter “INPUT OC PROTECT” set for option “1= Shutdown”:
EVO
TM
will be shut down.
•
There will be no AC output because the Transfer Relay will be de-energized, charging will be stopped
and PWM drive to the Inverter Section will be switched off
•
Fault message “Input over current” will be displayed on the LCD screen, Blue LED marked “Status”
will be switched off and Red LED marked “Fault” will be switched on
•
The unit will be latched in OFF condition and will require manual reset by powering off
the unit, waiting for 1 min and then powering on again
5.3 AUTOMATIC REDUCTION OF CHARGING CURRENT IN HIGHER AMBIENT TEMPERATURES
In order to protect against over temperature shut down when operating in higher ambient temperatures of around
50C to 60C, the BULK CURRENT setting
[See section 4.4.2.1 of EVO-RC-PLUS Remote Control Manual]
is automatically
reduced as follows based on temperature sensed at the Power Transformer and at the Heat Sink for the Power Mosfets:
•
Power Transformer:
In case the temperature is >130C, the BULK CURRENT setting is automatically reduced by
2% every 20 sec.
• Heat Sink:
In case the temperature is >90C, the BULK CURRENT setting is automatically reduced by 2%
every 20 sec.
5.4 PARALLEL CHARGING USING EXTERNAL SOLAR CHARGER
The batteries feeding the EVO
TM
can also be charged using appropriately sized external solar charging system. The
output of the solar panels will feed to an appropriately sized external Solar Charge Controller. Output of the external
Solar Charge Controller is fed to the input terminals marked “EXT Charger” (
3,4 in Fig 2.1
).
Maximum charging
current on these terminals is to be limited to 100A. This limit should not be exceeded!
The charging current received from the external Solar Charge Controller is directly fed to the battery terminals (
1,2
in Fig 2.1
) through a series connected Hall-effect Current Sensing IC with integrated shunt. The value of this current
is displayed as “BATT EXT” on the optional Remote Control EVO-RC-PLUS.
When AC input is available within the programmed window of AC input voltage and frequency, the batteries will be
charged based on the following options selected through programming parameter “EXT. CHARGER”:
i) Programming Parameter “EXT. CHARGER” set at Default Option “0 = Affect”
(Section 4.4.2.24 of
Remote-Control Manual EVO-RC-PLUS)
:
SECTION 5 |
Battery Charging in Evolution™ Series
Summary of Contents for Evolution EVO-4248SP
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