Mitsubishi problem

[rynorshine]

Hi Guys!

I recently installed 5 units of MHI's KX4 inverter type AC system and i got the shock of my life. The units are 24Hp, with 380V, 3 phase power supply. The units were suppose to operate between 60 to 120 Hz.

These units are dual inverter type units and it is the upgraded version of the KX2 that had one constant speed compressor.

Mitsubishi Heavy Inc engineers advised me that the required circuit breaker is 200A and that would 1000A on my 5 units! Correct me if I'm wrong but a usual 24hp unit would usually require a 75A circuit breaker from a 3phase 380V supply.

I'm wondering if anyone have an idea with the dual inverter system. Pardon for the intrusion, this is my first post.

Thanks,

Rynor

[superswill]

sorry to come into this one abit late but ive a great inverter pcb checker from dakin given to me that i use on all makes of ac,will find the part nymber out if anyone wants it(about £40)

[Brian_UK]

sorry to come into this one abit late but ive a great inverter pcb checker from dakin given to me that i use on all makes of ac,will find the part nymber out if anyone wants it(about £40)

Yes please.

[superswill]

Yes please.

brian that part number is 1225477 and they call it a power transisto checker,bar the flask its the best bit of kit going in my eyes