Re: Oil filled transformer with pressurised nitrogen of 4psi then too vaccum is creating inside transformer, why? Home › Electrical Engineering Forum › General Discussion › Oil filled transformer with pressurised nitrogen of 4psi then too vaccum is creating inside transformer, why? › Re: Oil filled transformer with pressurised nitrogen of 4psi then too vaccum is creating inside transformer, why? 2011/11/16 at 8:40 am #12628 adminKeymaster observe the oil temp. and oil pressure of the transformer at night and day .. usually during night time oil temp. go down… i wonder this transformer is outdoor type.
