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Model:

MPPT12-1

200W Solar Charger

Maximum Power Point Tracker

Operating Instructions

Please read these instructions before use

Warranty Conditions:

 The product is warranted to be free from defects in materials and workmanship under normal use and 

service for a period of 24 months from the date of sale. This warranty covers defective parts and workmanship provided that 

the product is shipped prepaid to the seller within 24 months of purchase of goods. This warranty is limited to the repair or 

replacement (at the manufacturers’ discretion) of parts and shipping prepaid to the original despatch destination. We regret that 

no liability can be accepted for consequential or special damages of any kind howsoever arising in connection with products 
supplied by the seller. This warranty is in lieu of all other warranties expressed or implied. No representative is authorised to 

assume for the seller any other liability in connection with the seller’s products.

MPPT12-1 Specifications 

Efficiency typical

 96%

Input voltage 

16V to 55V

Output voltage 

 Float 13.5V / 27V  Absorption 14.5V / 29V

Output power

 Peak 250W, constant 200W @29V / 150W @ 14.5V

Quiescent current

0.04A 

Thermal protection

Multilevel type

Dimensions (mm)

35 X 75 X 100mm

Indications

Dual LED display – battery OK / LOW

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

recommended battery capacity of at least 60AH. 

2.

 A larger battery will not only give longer run time during low light but also will be able to 

avoid available PV power being unstored such as when battery reaches the float stage.

Q: How does PV temperatures affects charge current?

Temperature increase brings down the PVs maximum power point voltage reducing the 
MPPTs 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 happens at low PV currents?

The MPPT will outperform the conventional regulator above 4% of nominal panel power. 
Below 4%, 6W in a 150W panel, the MPPT will have a slightly lower output current than a 

non MPPT. 

Q: Is interference possible? and If so what do I do?

 

GSL’s MPPTs produce far less interference than conventional solar regulator during the 
absorption and float stages, that is during most of its operating time, and its designed 
to comply with local and international EMI standards however some interference is still 
possible. If interference occurs first try and reorient the aerial or move the sensitive 
equipment away from the MPPT wires. Ensure the MPPT chassis is grounded. 
Grounding a battery terminal may also help and finally you can try adding ferrite clamps. 

MPPT12-1-R5

Summary of Contents for MPPT12-1

Page 1: ...n 17V for 12V Charging and 34V for 24V Charging Use wires suitable for at least 15a 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 si...

Page 2: ...aintained for approx 1 5 hours This MPPT has a built in multilevel over temperature protection to improve product reliability while maximising output power availability The peak maximum output power is 250W and the continuous output power is 150W on 12V systems and 200W on 24V over 20 The fuse PVF can be replaced by a suitably heatsinked 20A 60V schottky diode its anode connected to the panel and ...

Page 3: ...xpect about 30AH which is a 40W load for about 15 hours Q Why are MPPT used mainly in high power systems Until now and despite their overwhelming advantages MPPTs have been excluded from low power systems because of cost The new GSL MPPT specifically designed for low power makes economic sense even in small systems Q What sort of batteries should I use 1 A deep cycle battery is a must due to the c...

Page 4: ... 35 X 75 X 100mm Indications Dual LED display battery OK LOW Unit 2 110 Station Road Seven Hills NSW 2147 Australia recommended battery capacity of at least 60AH 2 A larger battery will not only give longer run time during low light but also will be able to avoid available PV power being unstored such as when battery reaches the float stage Q How does PV temperatures affects charge current Tempera...

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