n7dal
Electrical
- Nov 6, 2001
- 3
I have a friend who needs to specify a system for refrigeration of foodstuff. Apparently the HVAC people are calling for a three-phase vsd to control a 50hp blower. It seems that speed control will be done via a current-loop controller that is making the temperature measurements.
What are the key questions to ask of the system architects?
I realize that the motor must be inverter-rated to avoid overheating.
Is it common for vsd's to be current-loop controlled?
I have 20 years experience in the electronics world but little in the power field.
Suggestions for web-sites to study appreciated.
What are the key questions to ask of the system architects?
I realize that the motor must be inverter-rated to avoid overheating.
Is it common for vsd's to be current-loop controlled?
I have 20 years experience in the electronics world but little in the power field.
Suggestions for web-sites to study appreciated.