1. Water filled, water cooling, no pollution to pumping water 

2. Reliable double Shield structure: Shield stator & Shield rotor 

3. Insulation class F, 180℃ temperature resistant copper wire 

4. Stator & rotor core: Good cold rolled 600 silicon steel

5. Ceramic plating process for AISI304 shaft, more wear resistant

6. Graphite bearings have strong self lubrication & corrosion resistance, Can operate reliable with water lubrication.

7. Max. Submerging depth: 150m

8. IP68 Protection class

1. Hybrid powered by AC/DC, AC/DC auto switch

2. Auto On/Off  according to solar power strength

3. With MPPT function, efficiency can reach to 99%

4. Soft start: no impact current, no water hammer damage.

5. Wide Open Circuit Voltage: DC: 60~440V, AC: 90~220V

6. Multi-protect functions: 0ver-voltage/Under-voltage/Over-current/Phase loss/Short circuit/Water shortage/High temperature, etc.