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tubra®-eTherm P
Power to heat
The station for storing surplus electrical energy as heat in the buffer or hot water tank
- stepless power modulation according to VDI guidelines
and EMC compliant => CE mark - loading the buffer tank for high storage capacities
through target temperature control - a system controller for current measurement, power control and storage charge management
- independent of PV components, completely pre-assembled
Power extension
eTherm
optional functions:
- reheat function
- additional consumers – up to 12 kW stepless modulation
- inverter power limitation
- remote control Smart Remote
- adjustable reserve power for peak shaving of PV peaks
- combination with heat pumps – Smart Remote ready
- combination with batteries – maximum PV self-consumption
- cascading of one eTherm P and one eTherm C possible
Power extension
eTherm cascade
combination of tubra®-eTherm P and tubra®-eTherm C
- total thermal power 12 kW
- stepless modulating
- recommended for buffer tanks from 1500 liters
- PV systems up to 30 kWp, incl. sensors and power electronics
- independent of the inverter or energy management systems
| Typ | tubra®-eTherm P | tubra®-eTherm C 3 / 9 | tubra®-eTherm S |
|---|---|---|---|
| Design | Heating water | Heating water | Drinking- or Heating water |
| VDE-compliant modulation | Yes | Yes | Yes |
| Usable storage capacity | 100% | 100% | 40 - 80 % |
| Target temperature control for use of accumulator layering | electronic | electronic | - |
| max. operating pressure | 3 bar | 3 bar | - |
| max. accumulator charging temperature | 80 °C | 80 °C | 80 °C |
| Rated output | 0 - 3 kW (13 A) | 3 kW (0,8 / 0,8 / 1,4 kW) 9 kW (3 x 3 kW) | 0 - 3 kW |
| Dimensions H x W x D | 605 x 400 x 240 mm | 605 x 400 x 240 mm | 226 x 302 x 84 mm |
| Electrical connection | 1-phase PE 230 V AC 50 – 60 Hz | C 3: 1-phase / C 9: 3-phase PE 230 V AC 50 – 60 Hz | 1-phase PE 230 V AC 50 – 60 Hz |
| Measurement | 3-phase | * | 3-phase |
| Required Conductor cross-section | 2,5 mm² | 2,5 mm² | 2,5 mm² |
| Rated capacity | 0,2 l | 0,2 l | - |
| Weight | 13 kg | 13 kg | 9 kg |
| Radiator | 0,1-0,8 kW / 0,8 kW / 1,4 kW | 0,8 / 0,8 / 1,4 kW / 3 x 3 kW | 3 kW |
| max. flow rate | 300 l/h | 900 l/h | - |
| Residual delivery head | 100 mbar | 100 mbar | - |
| Target temperature | 30 – 70 °C | 65 °C | - |
| Water connection | G1 AG, Rp 3/4 IG | Rp 3/4 IG | G1 1/2 |
| Circulation pump | Para 15/7 iPWM2 | Para 15/7 iPWM2 | - |
| Power consumption | 3 - 45 W | 3 - 45 W | < 1 W |
| Materials | Brass, stainless steel, copper | Brass, stainless steel, copper | - |
| Interfaces | V-BUS, PWM, S0, 0-10V and zero-potential contacts prepared for remote control and as a communication interface. | Pump connection 230 VAC PWM Heating connection 1 / 3-phase 230 VAC 50Hz, controller V-BUS, SD card | None |
Product portfolio Power to heat
Power to heat stations from tuxhorn store energy in heat accumulators with significantly higher storage capacities than in batteries. They are used exclusively for heating water by means of electric heating element in the flow-through principle.
