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MPPT = Maximum-Power-Point-Tracking Charging Method (up to 98% efficiency)

Sizing the charge controllers in PV off-grid systems:

  • Do not exceed the controller allowed max current and voltage A/V defined as Isc/Voc.
  • In MPPT controller the absolute max allowed voltage is defined in the datasheet.
  • In case of MPPT controllers do not exceed the allowed generator power in accordance to the system voltage. Eg for the CIS-MPPT If 250W for 12V system (=20A) allowed, do not connect 500W to an 12V system, which may result in occuring of 40A and destruction of the controller. This is specific case for MPPT controller with 98% charging efficiency.
  • The real occuring current and voltage of the panel depends on temperature coefficient of the panel. Calculate additional 25% (A/V) which may occur under low temperature, as safety buffer (eg if panel Isc 8A, calculate +25% = 10A which may occur).
  • To choose the correct battery capacity, multiply the controller nominal current x10 (eg for an 10A controller choose 100Ah battery).
  • Always check the controller's datasheet and manual for individual parameters.


 
Diagrams    Guide PV Off-Grid Systems

MPPT

Phocos ECO-N-MPPT 85/15

Phocos ECO-N-MPPT 85/15
Phocos ECO-N-MPPT 85/15

12/24V PV solar/battery systems
Charge current: 15A
Max input voltage: 85Voc
Max input power: 250/500W
Low voltage disconnect: yes
Grounding: common negative
Charging method: MPPT

Availability: require pre order (waiting time ~4-6 weeks)

Limitations: max 3 units per order

€ 115.00

Net Price (without VAT)
pcs.
  • new

Phocos CIS-N-MPPT-LED

Phocos CIS-N-MPPT-LED
Phocos CIS-N-MPPT-LED

12/24V PV solar/battery systems
Charge current: 15A
Max input voltage: 85Voc
Max input power: 250/500W
Low voltage disconnect: yes
Grounding: positive
Charging method: MPPT

Availability: require pre order (waiting time ~4-6 weeks)

Limitations: max 3 units per order

€ 185.00

Net Price (without VAT)
pcs.

Phocos CIS-N-MPPT-85/15

Phocos CIS-N-MPPT-85/15
Phocos CIS-N-MPPT-85/15

System Voltage: 12/24V
Charge current: 15A
Max. Input Voltage: 85Voc
Max. Input Power: 250/500W
Low voltage disconnect: yes
Grounding: common negative
Charging method: MPPT

Availability: require pre order (waiting time ~4-6 weeks)

Limitations: max 3 units per order

€ 134.00

Net Price (without VAT)
pcs.

Phocos CIS-N-MPPT 100/30

Phocos CIS-N-MPPT 100/30
Phocos CIS-N-MPPT 100/30

System Voltage: 12/24V
Charge current: 30A
Max. Input Voltage: 95Voc
Max. Input Power: 450/900W
Low voltage disconnect: yes
Grounding: common negative
Charging method: MPPT

Availability: require pre order (waiting time ~4-6 weeks)

Limitations: max 3 units per order

€ 260.00

Net Price (without VAT)
pcs.
  • new
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