Strange frequency and voltage on paguro vte 4000 diesel generator *with video*

[aerobat]

Hello friends !

Maybe some here have an idea what it could be .

My ( 240v 50hz ) genny has 265volts and a wild frequency with no load but returns to ~ normal values when a load is put on it . Voltage is controlled here by a capacitor , no avr . I replaced the capacitor with a new 25uf one ( should be correct ) but the voltage is still too high so a risk to connect something sensitive on it .

I made a video when you can see the values of shore power line and generator line with and without a 1.5kw kettle on it .

Thanks for any ideas !

Best regards

 

[dingbat]

International Voltage and frequency standards are typically plus and minus 10% but have run into some weird situations with industrial power over the years.

There are a number of VFR schemes on the market. The fact that it works only under load would suggest the VFR circuit is switched on demand or using some of feed back loop.