Performances and working principle

◆Dynamic continuously speed regulation with frequency conversion

By regulating frequency and speed according to fluid feeding of oil well, the stroke of oil sucker is in the same step with fluid feeding in oil well. This guarantees that the oil sucker always keeps a balance of in and out during a best working state, which proves energy-saving and capacity increasing.

◆Variable frequency speed regulation in section

Setting two different frequency and speed for each stroke, oil sucker could automatically recognize and properly regulate top and down strokes as requirements. Decelerating speed of down stroke could make oil pump fuller while accelerating speed of top stroke could reduce leakage and loss.

◆Automatic function regulation

When oil sucker works, the control cabinet could adapt to motor load and motor’s end voltage automatically, which helps saving electricity and reducing waste.

◆Power factor compensation

Keeping over 0.99 of power factor, the control cabinet could timely regulate output frequency according to loads, which effectively reduces current, loads and wire consumption of transformer and reaches about 60% of electricity saving.

◆Soft-start and soft-stop

The control cabinet, without current shock, has the function of soft start and soft stop, which could save electricity and prolong usage life of mechanical equipment.

◆Energy feedback and utilization

Energy feedback unit in the control cabinet could transmit excessive regenerative electricity to electric power network timely for full utilization and energy saving.

◆ Micro-computer control

Accurate and reliable control cabinet, monitored centrally, could operate in many modes, which changes rough oil-extraction with low efficiency into intelligent oil-extraction with high efficiency.

◆Full protective functions