Float
Cum Boost Battery Charger
Float and boost or float-cum-boost, constant voltage, constant
current& constant potential, thyristor controlled, upto 100kw rating for
lead acid, SMF or Ni-cd batteries ranging from 20AH to 5000 AH and 12V, 24V,
48V, 110V and 220V or any custom range.
In the said charger there are
two separate sections namely float charger and boost charger housed in the same
sheet steel cubicle. Float charger delivers requisite voltage to the equipment
and simultaneously keeps the battery in trickle charge condition. Whenever main
supply goes of battery sub-starts supplying the equipment load. When power
supply resumes boost charger is switched on and battery bank is connected to
the discharged battery. Again when battery gets charged it is transferred back
to the float section to maintain its terminal voltage by applying trickle
charge to it.
Technical Specification
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Input
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Single phase 230V or Three phase 415V/440V
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Frequency
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50Hz/ 60 Hz + 5%
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Input voltage variation
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- 30% To + 10%
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Battery type
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Lead Acid/SMF/Ni-CD/VRLA/Plant
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Battery voltage
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As per customer requirement
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Rectifier configuration
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Full wave half control in 1 phase thyristor bridge OR
Full wave half control in 3 phase thyristor bridge OR
Full wave full control in 3 phase thyristor bridge.
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Transformer
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Copper Double wound-Heavy duty
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Control mode
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Constant voltage, current limiting OR
Constant current, voltage limiting
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Boost current
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10% of Battery AH Capacity
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Trickle current
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1% of battery AH capacity.
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Dynamic load
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10% to 90% range + 10% typical
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Efficiency
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HRC Fuse, Circuit breaker and electronic
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Overload
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110% for 10 minutes and 200% for 200 mili
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Ambient condition
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-10 TO 40oC optional up to 65oC
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Humidity
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96% non condensing
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Audible noise
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Less than 60dB at 1 meter
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Altitude
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UP To 1000 mts
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Voltage regulation
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+ 1%
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Current regulation
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+ 2%
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Riple voltage
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1 3% RMS (normally)
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Indication instruments
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Indications for 3 phase mains supply
Float/Boost Section
AC volt meter with selector switch
DC voltmeter with selector switch and battery volt
DC Amps meter for lead
DC Amps meter for Charging
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Protection
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Electronic trip against input fail/ Wrong phase
Gate pulse inhibit AC under voltage/ over voltage
High speed semiconductor fuse at rectifier input
(optional)
HRC fuse at output and filter circuit
Soft start with current limiting circuitry against
over load and short circuit
Device over temperature shut down (optional)
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Annunciation
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Audio - visual annunciation with flashing LEDs and piezzo buzzer
Fuse failure relay
DC earth fault Relay
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Termination of charging
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Automatic annunciation with flashing LEDs and piezzo buzzer
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Trickle/boost change over
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Automatic/Manual
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Construction
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Folded construction with CRCA sheet steel
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Degrees of protection
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Folded construction with CRCA sheet steel
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Construction
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IP-42
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Cooling
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Air natural or forced cooling
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Finishing
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Epoxy powder coated paint. Normally RAL 7032, Siemens grey OR as per
customers requirement.
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Note - Product will be provided as per customer requirement.
