Programmable AC power supply in order not to form overcurrent short interruption conditions under voltage and current waveform. A short interruption of 10ms occurred at a 90 degree phase Angle at 50Hz.

 

500kW load bank
 

As you can see, the voltage peaks are the same. That is, the magnetic flux on the positive and negative sides of the programmable AC power supply is the same, and the magnetic flux will be reset (cancel each other out).

As mentioned above, the programmable AC power supply does not overcurrent when the positive side voltage waveform is contrasted with the negative side voltage waveform in a cycle.

In practical standrds,such as voltage drop/short outage,the following precautions are required to alert the committee of various electrical products.

When setting performance standards of class 0.5 for products containing power transformers, it is recommended that special attention be paid to the effect of the inflow current from the programmable AC supply. In the above products, The overcurrent may reach 10 to 40 times the rated current due to the saturated magnetic energy of the transformer core after the voltage drop.

In addition, if overloading problems with programmable AC power cannot be avoided, the best approach is to increase the AC power rating. If you use the company's programmable AC power supply, you can solve this problem by running the replenished capacity deficient model in parallel. For example, 2000VA models and 4000VA models can be connected in parallel using a separately sold programmable AC power supply (parallel operating drive) as a 6000VA AC power supply.

In this case, it is necessary to ensure that the firmware versions of the two models of programmable AC power supply are the same. Also, upgrade to the latest version of firmware and use it.