KWDY-420 Series Noise testing balanced load system

Overview

The system is equipped with a touch - screen control operation device. Testers can complete operations such as digital power switching, digital power output adjustment, compensating reactor group switching, total output switching, and emergency stop through the embedded touch - operated human - machine interface in cooperation with the PLC programmable logic controller. At the same time, they can view the three - phase voltage and current of the system input, digital power output, and total output.

The digital power supply equipped in the system has a fully digital structure. Its output adjustment is accurate and linear, the output power quality is high and not affected by the power quality of the input side, and the frequency output is stable. When the load of the digital power supply changes within 20% - 100%, the power factor on the power supply side reaches 0.96. It has a low demand for power capacity and does not need to add a harmonic suppression device when the power quality is poor. At the same time, the harmonics generated by the digital power supply on the power supply side are less than 2%, which will not affect the operation of other devices in the network. The digital power supply has complete hardware protection measures. Its electronic protection method has a fast execution speed and has multiple protection measures such as power device overload fault protection, over - current fault protection, over - voltage fault protection, phase - loss fault protection, short - circuit fault protection, and over - temperature fault protection. There are also zero - start voltage - rising protection and automatic zero - return functions set in the system.

The three - phase compensating reactors equipped in the system have a rated voltage of 400V, with capacities of 50kvar, 100kvar, and 200kvar respectively. There are 3 reactors in total with a total capacity of 350kVar. The full - load operation time can meet more than 30 minutes, and the contactor controls the combined switching of the 3 reactors.

Parameters