The static compressor converter PSK2-25-550/380 is designed to power the air conditioner of the passenger compartment of a trolleybus with an alternating voltage of 3x380V, with a controlled frequency of 25 ... 50Hz from the contact network of urban electric transport with a voltage of 550V DC. The product complies with modern trends in world technology and is based on a 32-bit microprocessor specialized for working with three-phase motors and a power transistor IGBT module. The microprocessor performs the function of a regulator, a generator of a pulse-width modulated signal that forms a sinusoidal current in the motor, provides communication with the control panel, and also performs the necessary protective functions.

The control panel allows you to change and save the parameters of the converter in the non-volatile memory, as well as view the accumulated messages about emergency situations.

The converter has all control and diagnostic functions that allow protecting both the converter and the asynchronous machine from damage. It is resistant to short circuits in the load circuit, motor jamming, power supply overvoltage, wire breakage that feeds one of the motor phases, converter and motor overheating.