Switching the multimeter to Diode position and test as follows:
1. Set the multimeter to Diode position, connect the black hand with "+", then connect the red hand with R、S、T、U、V、W in order, if all the values is between 0.3--0.5V, both the rectifier and IGBT upper bridge are good.
2. Contrary, connect the red hand with "--", then connect the black hand with R、S、T、U、V、W in order, if all the values is between 0.3--0.5V, both the rectifier and IGBT lower bridge are good.
If the test values is highly unbalance, the rectifier or the IGBT must be broken. And you can't power on in this situation.
More details, please see the attached file.
Notice: Please make sure that the inverter no power, so we call it static test.
Yes, but the battery only supports up to 1C discharge, that is, the discharge power will not be bigger than the battery power. If the battery power is less than the power of the machine, the machine excess power will be wasted.
Thyristor switching module can achieve seamless switching, switching time is less than 10ms; Contactor switching module time is longer, there may be adhesion in the switching process. From 2020, the switching modules of PCs products will be upgraded to thyristor switching modules.
PCS above 500kW are not equipped with transformers, because in most cases, the power grid will have high-voltage transformers.
Under 500kW, compared with the equipment without power frequency isolation transformer, THDu and THDi are smaller, output characteristics are stable, load adaptability is stronger, and power quality is higher, which is more suitable for industrial applications.
Reset the time and date, power off 10 minutes and then start to see if the clock can be real-time timing.
The output power in the grid parameters is set to 0%. If the grid connected power needs to be reduced, this parameter can be modified to the required percentage.
No, the photovoltaic input can only be used to charge the battery and cannot generate electricity to load.
No, there is no internal outpuit terminal for wake up generator.
GD5000 comes standard with built-in PID regulator, which can realize closed-loop control.