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PWM MPPT 3KW Heater Charge Controller for Photovoltaic Solar Panels ACTii AC7392
zł1,268.41
Tax included
PWM controller for heaters with an MPPT maximum power point tracking algorithm from photovoltaic panels.
The controller enables powering standard domestic hot water (DHW) electric boilers from solar panels.
A photovoltaic panel operates at maximum power only at the optimal voltage. Connecting a heater directly to a photovoltaic panel causes too much load and, as a result, a voltage drop. At a reduced operating voltage, the panel produces even several times less current than at the optimal voltage. Using a charge controller eliminates this problem. Even on cloudy days, it will be possible to heat water in the boiler.
Built-in charge buffer, which allows for higher efficiency (up to 30%) and reduces interference caused by PWM regulation.
The controller is equipped with a temperature sensor, which allows for stopping the boiler heating above the set temperature.
The device is equipped with an additional relay output (potential-free) allowing notification of external devices that water heating has finished (target temperature reached) or that a device failure has occurred. This output allows for connecting additional devices.
PWM MPPT 3KW Heater Charge Controller for Photovoltaic Solar Panels
Model: ACTii AC7392
EAN: 6931240073926 SKU: 739260731
- PWM controller for heaters with an MPPT maximum power point tracking algorithm for photovoltaic panels. The controller enables powering standard domestic hot water (DHW) electric boilers from solar panels.
- The controller is equipped with a temperature sensor, which allows stopping the boiler heating above the set temperature. It is possible to change the set temperature.
- Two displays - one shows the current DHW temperature, the second defaults to current power or, when switched, panel voltage and peak power.
- Built-in charge buffer. It allows for higher efficiency (up to 30%) and reduces interference caused by PWM regulation. Transistors with a large margin (ensure long, trouble-free operation).
- The controller is powered by PV panels. There is no need to connect an external power supply. (The RJ45 socket can also be used to power the controller when there is no voltage from the panels).
- Large heatsink ensuring passive cooling, thanks to which there is no need to use a controller fan.
- The controller has thermal protection and active cooling dependent on the actuator temperature and power.
- RS485 communication port allowing reading of operating parameters from a computer.
- Heatsink and housing interior temperature monitoring. Built-in acoustic alarm.
- The controller can be turned off and on (plus and minus buttons).
- Relay output informing about the interruption of the heater's heating. It can be used to connect external devices.
- Made in EU
Description
PWM controller for heaters with an MPPT maximum power point tracking algorithm from photovoltaic panels.
The controller enables powering standard domestic hot water (DHW) electric boilers from solar panels.
A photovoltaic panel operates at maximum power only at the optimal voltage. Connecting a heater directly to a photovoltaic panel causes too much load and, as a result, a voltage drop. At a reduced operating voltage, the panel produces even several times less current than at the optimal voltage. Using a charge controller eliminates this problem. Even on cloudy days, it will be possible to heat water in the boiler.
Built-in charge buffer, which allows for higher efficiency (up to 30%) and reduces interference caused by PWM regulation.
The controller is equipped with a temperature sensor, which allows for stopping the boiler heating above the set temperature.
The device is equipped with an additional relay output (potential-free) allowing notification of external devices that water heating has finished (target temperature reached) or that a device failure has occurred. This output allows for connecting additional devices.
Specification
Parameters
Supply voltage: controller powered from PV Panels
Panel voltage: From 10V to 350V DC
Panel current: MAX 13A
Maximum heater power: 3kW
Maximum panel power: 3kW
Current draw: 0.08 A
Temperature measurement accuracy: 0.1 degree
Method of operation
Configuration consists of setting the target temperature that the domestic hot water should reach. This is done by pressing the MENU button until an intermittent sound appears from the controller. Then the upper display will show "S.tE", which means setting the target temperature. It is possible to decrease the operating voltage threshold of the controller, but this option is recommended when using an external power source. The start voltage can be decreased by holding the minus button until an intermittent signal appears from the buzzer. The default starting voltage is 150V.
Turning the controller on and off:
The controller can be turned off by a short press of the MINUS button (voltage stops being supplied to the heater).
Turning it on is done by a short press of the PLUS button. By default, after turning on the power, the controller automatically starts working (supplying power to the heater using the MPPT maximum power point tracking algorithm) if the voltage exceeds the minimum value. The controller can work only and exclusively with photovoltaic installations, it cannot be used for wind turbines. Apart from the settings described above, the controller does not require any additional maintenance. Adjustment of operating parameters happens automatically and is dependent on the capabilities of the panels and the load. The controller must absolutely be loaded ONLY with heaters used in boilers. Do not use air resistance heaters or other electronic devices.
Additional information
Temperature sensor cable length: approximately 100cm
What heater should I use, AC or DC, and what power?
Since the only parameter describing a heater is resistance, you can use an AC or DC heater.
The heater must be matched to the photovoltaic panels.
If your photovoltaic panels nominally provide 140V DC 7.14A 1000W, the most appropriate will be to use a 140V DC heater with a power of 1000W,
but you can also use a 230V AC or 110V AC heater. You only need to match the heater power to the PV panels. (we provide an online calculator to calculate the proper heater).
According to the above, (since the only parameter of the heater is its resistance, as well as current intensity), it is possible to match a 230V heater to work with PV panels of a different voltage, using Ohm's law. 140V / 7.14A = 19.61 Ohm. Our heater is to have 19.61 Ohm. For a 230V heater P=U*U/R. P=230*230/19.61=2697W. For 140V 7.14A PV panels, we can therefore use a 230V AC heater with a power of about 2700W.
Heaters can have two independent spirals. One spiral can be used to heat water from PV panels and the other from the 230V network.
During normal operation, the following parameters are displayed on the screen: current power and DHW temperature. The flashing OUT diode indicates that power is being supplied to the heater.
The device is equipped with an additional relay output (potential-free), allowing notification of external devices that
water heating has finished (target temperature reached) or entry into emergency mode (actuator failure).
Set contents
Controller with charge buffer
Packaging
Manual
Temperature sensor
Cable connectors
Certificates and standards
CE, RoHS
Dimensions, Weight
Product dimensions: 130 x 140 x 120 mm (D x W x H)
Packaging dimensions: 140 x 150 x 140 mm (D x W x H)
Product weight: 930 g
Weight with packaging: 950 g
Zum Download
739260731
Specific References
- EAN13
- 6931240073926
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PWM controller for heaters with an MPPT maximum power point tracking algorithm from photovoltaic panels.
The controller enables powering standard domestic hot water (DHW) electric boilers from solar panels.
A photovoltaic panel operates at maximum power only at the optimal voltage. Connecting a heater directly to a photovoltaic panel causes too much load and, as a result, a voltage drop. At a reduced operating voltage, the panel produces even several times less current than at the optimal voltage. Using a charge controller eliminates this problem. Even on cloudy days, it will be possible to heat water in the boiler.
Built-in charge buffer, which allows for higher efficiency (up to 30%) and reduces interference caused by PWM regulation.
The controller is equipped with a temperature sensor, which allows for stopping the boiler heating above the set temperature.
The device is equipped with an additional relay output (potential-free) allowing notification of external devices that water heating has finished (target temperature reached) or that a device failure has occurred. This output allows for connecting additional devices.