tubra®-eTherm S
Power to heat
The tubra®-eTherm S detects surplus electricity from PV systems, determines the available power and passes it on to an electric heater. In this way, excess electricity is converted directly into thermal energy and stored. Power electronics for stepless control of 3 kW electric heating elements for buffer and drinking water tanks.
- increasing the self-consumption of the PV system
- priority for household electricity
- applicable on all potable water and buffer storage tanks with 6/4 socket to accommodate an electric heating rod
- energy storage in hot water tanks with significantly higher storage capacities than in batteries
- optimal for retrofitting to existing storage tanks
- fast power modulation 0 – 3000 W
- exact, fast measurement of the excess current
Power extension
eTherm
optional functions:
- 0 – 10 V Control
- inverter power limitation
- reheating
- smart remote access
| 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.
