6, hoisting load:
Winch load adopts frequency conversion speed regulation, stable and reliable. The blast furnace lifting equipment is the main iron-making raw material conveying equipment. It requires smooth starting and braking, uniform acceleration and deceleration, and high reliability.
Most of the original use of cascade, DC or rotor series resistance speed regulation, low efficiency, poor reliability. The ideal effect can be obtained by replacing the above speed regulation mode with AC frequency converter.

7, pump load:
Pump load, large volume and wide range, including pumps, oil pumps, chemical pumps, mud pumps, sand pumps, etc., there are low pressure medium and small capacity pumps, but also high pressure large capacity pumps.
Many water company pumps, chemical and fertilizer industry chemical pumps, reciprocating pumps, non-ferrous metal and other industries of mud pumps using frequency control, have produced very good results.
8, crane, dump truck load:
Cranes, dumpers and other load torque is large and stable, positive and negative frequent and reliable requirements. Inverter control crane, dump truck can meet these requirements.