QTZ series tower crane electrical control cabinetDetailed product description：

The QTZ series electrical control cabinet (box) is suitable for various large and medium-sized tower cranes, controlling the starting, speed regulation, braking, and reversing of the crane. Currently, it can be divided into more than 10 specifications such as QTZ16, 25, 30, 40, 50, 63, 80, 100, 125, 160, etc.

structural characteristics
The electrical control cabinet of the QTZ series tower crane adopts the GB9462-88 "Technical Conditions for Tower Cranes" standard, which can be made into different external dimensions and installation dimensions according to user needs. The installation method adopts wall mounted or pedestal type, and the internal electrical components can choose different models of products, such as CJ20 series, LC1 series, B series, etc. The contactor can also choose imported components.

Principle Overview
The QTZ series tower crane electrical control cabinet, in conjunction with the crane control console, controls the lifting, slewing, trolley amplitude, and starting, speed regulation, braking, and reversing of the tower crane. It also provides protection for the crane's power supply and distribution, short circuit, overcurrent, overvoltage, undervoltage, zero position, phase failure, and phase misalignment. This series of electrical control cabinets adopts a combination of eddy current brakes and switching motor rotor resistors for starting, speed regulation, pole changing speed regulation, or autotransformer voltage reduction starting with switching rotor resistor speed regulation, electromagnetic slip, torque motor voltage regulation speed regulation. Variable frequency speed regulation and PLC control methods can also be used. Different speed regulation methods can be adopted for various motion mechanisms of tower cranes.

QTZ series tower crane electrical control cabinet（No image available）