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the motor connection are delta-delta/wye-wye/delta 220/380/440V respectively.

400V 60Hz was the clients requirement and yes it is not a common voltage here in the Philippines. The motor was designed with triple voltage 220/380/440V 60Hz. Are those effects will still happen even if the motor has 5% voltage tolerance?

will there be any long time effect if we connect 380V 60Hz motor to 400V 60Hz supply? Thank you.

we are going to test these motors under load and we are hoping that the current will not increase as we applied load. i will post the result as soon as i get it. by the way, the motor has no running capacitor. its a squirrel cage induction motor, 3Phase/220V/2.51Amp/0.67PF/1750RPM/60Hz/1.15SF

recently we tested the motors using VFD, setting the voltage to its rated voltage but where still getting the same result and the motors are not running very hot. If hot rolled sheets have higher losses, then why would they use it? I already ask the manufacturer the same question, and still...

the PF = 0.67 (nameplate). we also tested several 0.5Hp 3ph induction motor from the same manufacturer but the no load current was fine, around 20-30% of the FLA. the motors were rated at 230V (+/-)5%. We measure the actual voltage around 220-222V. By the way, all motors i mentioned were 3phase...

does hot rolled sheet stator lamination has something to do why no load current = full load current? We are testing (no load) several 0.75 4Pole 220V induction motor and we are getting no load current = FLA rating. The manufacturer told us that this was part of the design since they used hot...

Can anyone help me to differentiate in terms of properties of these two (2) materials usually used in air ducting. im surfing the net but i cant find any substantial information. im hoping you guys can help me. Polyurethane vs the common GI Sheets Air Duct. Thanks, JK

Thanks for all the reply. Really appreciated guys. I attached here the UPS & Automatic maintenance bypass panel connections. Im confused where we can connect the AVR in bypass mode? Without them connected at the same line? Because we eliminated all transfer switches since we will replace them...

We already have the AVR sir. Will the AVR act as a load? and if we connect the 33kva avr before the 30KVA UPS to 100AT lines, can the breaker sustain the current draw?

Im new here in the forum, and i've learned a lot of things by simply reading all posted threads. So, Thank you. Can you guys help me on this. We need to upgrade our data center 30KVA UPS to 30KVA SMART UPS VT. this model include an automatic maintenance bypass panel. i attached here the existing...