Battery Charger Rectifier for Lithium Ion Ni Cd Battery
1. Battery charger application
Self-regulated rectifier automatic battery charger, IGBT power supply converter, especially developed for powering critical loads associated to Sealed rechargeable battery, Lithium ion battery (Li-lon), Ni-Cd battery and Pb-acid battery bank, such as secure energy systems for substations, emergency lighting, communications etc.
2. AC/DC converters and battery charger description
Green Power broad range of ac/dc converter and battery chargers, with power ratings from 3kwto 500kw, are suitable for almost any battery charging application where robust design and high reliability are required. The DC power supply has demonstrated to be a secure, reliable and economic way to provide reserve power supply for critical consumers. Used as a power supply of critical loads associated to a bank of batteries, of high reliability and great connectivity with data transmission networks for monitoring and parameter control.
3. battery charger Features
Robust design, High reliability
The reliability of the DC network will depend on the quality of the selected batteries, as well as the charger equipment that operates as charging system and maintenance.
Custom design battery charging curve
Normalized load curve, work with a characteristic voltage-current output curve, the output current remains constant while the charger voltage does not surpass the established maximum. If this maximum voltage is surpassed, the charger behaves as a constant voltage supply, keeping the value of the output voltage constant for the protection of the equipment and the batteries connected to it.
Automatic/Manual mode running
In the automatic mode, once primary energy has been reinstalled and with dead batteries, the rectifier is positioned in trickle charge delivering constant current to the batteries, until the established trickle voltage is reached, and from this moment on the rectifier switched to constant voltage. This situation is maintained during the time established by the equipment operator and defined from the control panel. That is, the trickle charge is timed.
In the manual mode, the transfer from float charge to trickle is made by the operator from the control panel. This trickle load will also be timed during the preestablished period by the user or he could end it by a resetting action.
Modular structure, parallel connection to expand output current. Compact size.
Flexible and friendly programming, a microprocessor-based control composed by a master control and an interface unit with the user that acts as a control panel.
All controls and displays on touch screen
-Output voltage and current display
-Charger time display
-Ampere hour display
-Rectifier status indication
-Auto/Manual mode display
When the rectifier is charging battery, the red light is on. When it is not charging, the color is grey.
When the rectifier finishes charging, the red light is on. Otherwise, the color is grey.
When there is no alarm, it shows red color continuously, when there is alarm, it is flashing.
It shows number of series connected cells.
Charging, charged, stop.
-When there is fault with battery, it will show battery status, including:
When actual battery voltage exceeds set max. Voltage*cell number, it will show incorrect battery voltage.
When actual battery voltage is lower than set min. Voltage*cell number, it will show no battery.
The min. and max. voltage is set on touch panel.
4.Battery charger Technical Specifications
Custom design, power 3kw-500kw
3-Phase AC Input
3 phase 230VAC, 380VAC, 415VAC, 440VAC, 480VAC, 550VAC, 600VAC, 50-60Hz
Operator Panel Controls and Indications
AC Isolator MCB : This MCB isolates the input power to the charger.
Mains On Lamp : this lamp indicates the charger input power is on. Auto/Manualswitch: shift between AUTO and MANUAL modes of operation. In order to change the mode charger should be powered off , select the desired mode and then power the charger on again.
Start Stop Switch : This push button switch is used to give start and stop charging command in MANUAL mode of operation. This switch is inactive in AUTO mode.
Current Set: used to set the charging current in MANUAL mode of operation. Current set is inactive in AUTO mode.
Output regulation range
0-100% of max currentor voltage
1/1000 of max current or voltage
Constant current and constant voltage, constant power
<3% on request
>90% (typ.) @ rated load
Degree of Protection
IP30 for air cooling
>0.93 @ rated load
100% 24 hours continuous running
Audible and visual alarm
Air cooling/water cooling
Available Interfaces with PLC
Short circuit protection
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