Fantastic Explanation. Every Oil well and Punch press uses a design D motor. Large Screw Header's as well. Many painful lessons of electrical maintenance engineers trying to replace a design D motor with new A or B. Many times it cant be done, even with an AC drive. Reciprocating loads, Heavy Fly-wheels, and Large startup torque prove the grave yard to the New Drives. Its Best to rewind the old dogs, or oversize drive and motor, with DB resistor, and overvoltage Supression Software in the Drive.
Thank you for a well done, informative, & easy to understand video. You would make a good school teacher or college professor.
Thanks a lot for watching!
Fantastic Explanation. Every Oil well and Punch press uses a design D motor. Large Screw Header's as well. Many painful lessons of electrical maintenance engineers trying to replace a design D motor with new A or B. Many times it cant be done, even with an AC drive. Reciprocating loads, Heavy Fly-wheels, and Large startup torque prove the grave yard to the New Drives. Its Best to rewind the old dogs, or oversize drive and motor, with DB resistor, and overvoltage Supression Software in the Drive.
great video zack solid lecture love your videos they help alot!
super