M_A_A
Member
- Location
- Western MA.
Could someone please help me with this?
Last week at the plant we were testing out a used mixer powered by a 50HP 480v 3p motor and a VFD.
When it was running at full speed under no load the amp draw on all phases was less than 3 amps on the input of the VFD and 20+ on the output side phases.
I presume this is because the mixer was not under load. As the load increases the input amp draw should increase as well, correct?
It has been a while since I worked on such a large unit and was wondering if the readings sound normal or maybe there is a problem with the VFD.
The unit is older and documentation is somewhat unclear as it only states maximum specs. All of the parameters have been doublchecked to be correct.
Last week at the plant we were testing out a used mixer powered by a 50HP 480v 3p motor and a VFD.
When it was running at full speed under no load the amp draw on all phases was less than 3 amps on the input of the VFD and 20+ on the output side phases.
I presume this is because the mixer was not under load. As the load increases the input amp draw should increase as well, correct?
It has been a while since I worked on such a large unit and was wondering if the readings sound normal or maybe there is a problem with the VFD.
The unit is older and documentation is somewhat unclear as it only states maximum specs. All of the parameters have been doublchecked to be correct.