China Tower Crane 30pqc20 Rcs PC Assembly Hoisting Mechanism

PQC electrical control
PQC tower crane electrical control system is an economical electrical control solution based on the advanced foreign technologies.The system integrates slewing, luffing and hoisting mechanisms and power supply into a case.Compared with RCS,PQC electrical control system is more compact in structure and simper & more economical in circuit. This electronic control cabinet slewing mechanism adopts RCV speed regulation with features of stable operation and accurate positioning.Luffing mechanism adopts 2 control modes:3-gear self-coupling voltage reduction + eddy speed regulation or 2-gear pole-changing speed regulation. Hoisting mechanism adopts 3-speed motor pole -changing speed regulation. The traditional circuit is improved, overcoming problems of easy contactor damage and large impact on the mechanism during hoisting or speed reduction of motor. Temperature range:-20ºC-+40ºCHumidity:lower than 85%RH(no moisture condensation)
Altitude:the attitude of installation location shall not be higher than 1000m. Power grid quality:the voltage fluctuation range shall not exceed ±10% of the rated voltage. Power capacity shall be guaranteed fully.

Model25PC13A33PC1540LVF1340LVF1560LVF25Rated Single Rope Tension KN1315131525Magnification44444Rated Power of the motor KW18/18/3.524/24/5.5303045Working Frequency Hz50506-50-1006-50-1006-50-100Hoisting Speed m/min33.5-17-337.5-19-32.5-18-362.5-20-402.5-20-40Hoisting Capacity t2.5-2.5-53-6-65-5-2.56-6-310-10-5Rope capacity360400360400500Nominal Diameter of Wirerope mm1012101214