vanguardviper

I don't have access to online purchase where I am ... and thanks for reply , but that was not my question ! I need to know if I can replace mosfets with deferent parameters , even if they are lower than originals . the original mosfet has a current (Id) of max 200 amps , the closest I could find has 180 amps of max current .

Switching from grid to battery is a signal from control to Relay ... If we assume the relay is working fine, then we check load. you said Load is 500 to 1 Kw .. that shouldn't make that problem for a 10KW inverter .. so I advise: - check grid status (Voltage, Frequency) if the grid voltage is lower than normal that could cause that delay (solution is a good regulator) - check Cables, if cables diameter is not well calculated or the length between inverter and load is big, that will cause drop voltage which get us back to first case. - check inverter settings, especially the response time (usually there are two options, one for appliance (20ms) and one for sensitive devices like PCs (lower than 10ms) - check battery condition, and concentrate on terminal connections, also check connections on circuit breakers if there is any. - If your system is NOT a common Neutral (combined grid Neutral with inverter output Neutral) that could cause such a problem (thou I don't recommend that kind of install) I advise you to use a small UPS for sensitive devices (routers, PCs .. etc.) Actually, I've done this with my own system because I have the same problem you have, SPECIFICLY when gaming on my PC hope that help ...

Hi I have a solar invertr : Felicity IVEM5048 the unit is damaged (lost nutral from grid) after testing the board I found : 4 Damaged Mosfets on INPUT side ( Mosfet : NCEP026N10) 4 Damaged Mosfets on OUTPUT side ( Mosfet : MIW75N65F) I checked drive section (resistors , npn+pnp transistors , optocoupler ... ) nothing damaged I couldn't find the same mosfet equivalent for damaged parts , and the closest equivalent has lower Id paramiter (Drain Current-Continuous) my question : can I replace mosfet with same voltage and Rds but with lower Id ?