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Model:

BMPPT800

800W Solar Battery Charger

Booster Maximum Power Point Tracker

Operating Instructions

Please read these instructions before use

Unit 2, 110 Station Road, Seven Hills ,NSW,  2147, Australia

BMPPT800-R2

    Important notes: 

   The panel open circuit voltage MUST be below 27V on battery systems or below 54V on 48V 

      battery systems. 

 

   Use only sealed or vented 24V or 48V lead acid batteries and confirm the BMPPT settings, 

    charge voltages and currents are correct for your battery system – if in any doubt seek 

    qualified advice!

   This equipment must be installed by qualified personnel only and incorrect wiring can cause 

    fire, injury or death – GSL will accept no responsibility for BMPPT misconnection or misuse.

   Use wires suitable for at least 30A, but if wire runs are over 3m then larger wires are 

    recommended to limit voltage drop and losses. 

   Install the unit in a dry place out of direct sunlight and away from flammable liquids or gases.

   Battery fuse ( BF ) is always required and must be located as close to the battery as possible, 

    its sizing depends on the wire size and load ratings. Typically a 30A 60VDC fuse would do.

   The lowest Maximum Power Point reqired for proper operation is 14V.

BMPPT800 Specifications 

Efficiency typical

 96%

Input voltage 

14V to 54V

Output voltage 

 Float 

 27V / 54V 

 Absorption

 

- Vented LA Batteries

 29V / 58V

Sealed - LA Batteries

 28.4V / 56.8V

Output Current

14A @ V

out

 / V

in

 ≈ 2  ,  7A @ V

out

 / V

in 

≈ 4 

Quiescent current

0.04A  (0.08A with MCM)

Thermal protection

Multilevel Type

Dimensions (mm)

220 X 145 X 67mm

Indications

LED display –  OUTPUT STATUS

BMPPT800 General Information:

• 

Green LED On  – Battery Ok.

 Green LED Flashing – Battery Low.

• 

This MPPT is designed to auto detect 24V or 48V battery systems and select a suitable charge 

   regime.

• 

The BMPPT800 is shipped in a sealed battery setting which is the safest setting but if your 

  batteries are vented then, 

BEFORE

 wiring the BMPPT in, follow the 

  

CHANGING BATTERY TYPE SETTING PROCEDURE.

 The absorption phase is entered following a low battery condition or dawn and is 

  maintained until  the battery demand falls below 1.5A.

 Custom float and absorption voltages and thresholds are possible but minimum orders apply.

 This BMPPT has a built in multilevel over temperature protection to improve product reliability 

  while maximising output power availability. 

Summary of Contents for BMPPT800

Page 1: ...that won GSL Electronics the prestigious 2008 EDN Innovation Award and the 2009 Greentech Consensus Award A simple efficient and low cost alternative to charge sealed or vented batteries from low voltage or parallel panels With built in low voltage disconnect Compatible with our MCM module and PC Based GUI The BMPPT800 is designed to automatically charge 24V and 48V sealed and vented lead acid bat...

Page 2: ...depends on the wire size and load ratings Typically a 30A 60VDC fuse would do The lowest Maximum Power Point reqired for proper operation is 14V BMPPT800 Specifications Efficiency typical 96 Input voltage 14V to 54V Output voltage Float 27V 54V Absorption Vented LA Batteries 29V 58V Sealed LA Batteries 28 4V 56 8V Output Current 14A Vout Vin 2 7A Vout Vin 4 Quiescent current 0 04A 0 08A with MCM T...

Page 3: ...onnected and the batteries are not protected from overdischarge Wiring With Low Voltage Disconnect Figure 2 This option protects the battery from overdischarge by disconnecting the load The LVD option disconnects the load when the battery voltage drops below 0 85 of nominal voltage to protect the battery from damage The load reconnects when the battery voltage exceeds 0 95 of nominal voltage This ...

Page 4: ... any condition Non critical loads are loads which can be disconnected to ensure maximum on time for critical loads as well as to extend the life expectancy and reliability of the system The non critical load can be set up as LVD or Dawn to Dusk loads Figure 3 Wiring with MCM option Connecting the optional MCM to the BMPPT will allow various system parameter display output voltage and alarm setting...

Page 5: ...table to determine the best setup for your situation V O C V M P 2 4 V C h a r g i n g 4 8 V C h a r g i n g 21 16 42 32 63 48 84 64 42 32 84 64 Grid Connect Panel size per cells in grid 1x18 Cell Grid 10 8 1x48 Cell Grid 28 23 2x48 Cell Grid 56 46 3x48 Cell Grid 84 69 1x52 Cell Grid 31 25 2x52 Cell Grid 62 50 3x52 Cell Grid 93 75 1x54 Cell Grid 32 26 2x54 Cell Grid 64 52 3x54 Cell Grid 96 78 1x60...

Page 6: ...dure 1 Ensure all the BMPPT wires are disconnected 2 Remove 7 front panel screws and the front panel and slide out cover see Figure 4 3 Locate connector J4 see Figure 4 4 Shift link on J4 to vented position see Figure 5 5 Slide back cover and fit in front panel carefully insuring led fits properly into housing and screw back the 7 mounting screws The above procedure can be repeated to turn back to...

Page 7: ...ove the input The nominal panel output power can only be ensured with the use of an MPPT Q When is a BMPPT Required The BMPPT is required when the panel voltage is below the battery voltage such as when a 12V panel needs to charge a 24V battery The BMPPT enables the parallel connection of panels which can make the system more tolerant to partial shading when compared to series panel connection BMP...

Page 8: ...ow do PV temperatures affects charge current Temperature increase brings down the PVs maximum power point voltage reducing the BMPPTs current gain available In principle at 25C it is possible to achieve 30 gain but at 40C a more realistic average temperature about 20 is still available Q What sorts of loads can I power with the BMPPT800 1 The maximum bulk charge current with the BMPPT30 on a 24V b...

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