Recent content by vsdguy

I am like a 1000 miles away from the motor and the drive. Customer called that by mistake they received a 2pole instead of a 4 pole. I was just curious if someone ran into a similar experience. The application is for pulling vesels and loads at the worst case scenario 600 tons. As I...

Hi all, I have a 75kW high load Ac drive and a 75kW 4 pole 3 phase motor that is supposed to be used for a winch pulling horizontaly. The customer connected the Vfd to a 75kW 2 pole 3 phase motor. Now the question is will this 2 pole motor be capable to develop enough torque to pull a...

Thank you all, I am specificaly interested in controls. More specificaly in control engineering. PID, AC/DC controls, automation, AC drives, Power electronics. I will check the site you provided Astronuc. Thank you all again for sharing information. Regards, vsdguy

Ranger, I checked your link to have lots of information but noticed that the Knowledge of Lair link does not work. The previous day I checked that forum out it was rich with lots of information almost for every subject that I am aware. Any idea where the forum has moved and how I can...

Hi again, Just wanted to say thank you again Nikola-Tesla for your help along with Wolram. Kind Regards, vsdguy

Hi, Thank you for your responses. The current CB was already sized to 40amps. I think the 125% of FLC would suit for any CB rating. ****The current comming in the building is 60 amps which means that that 60 amps is split into 40 amps for the three phase and the remaining is 20 amps for...

Hi all, I am curious to know if anyone can provide me with a formula or a rule that sizes the circuit breaker so the circuit is protected during inrush currents. The supply is 415VAC, 50Hz. The current comming from the buildings main distribution panel is around 60 Amps. The...

Thank you all, I have the same thing happening to me berkeman. I guess I spent a lot of time out in the field working with various industrial applications. I guess after all as long as I fixed the problems and got production up and running it all that mattered. The environment I have...

Hi all, I am new to this forum and always wanted to participate and become a member of an engineering forum. I used to work as a Field Engineer for a company that creates control engineering systems. I spent a lot of time out there in the field fixing and repairing a lot of VFD's. I have...

Hi all, I am new on the forum and was wondering if there is a source where I can download or get engineering ebooks? Any help would be appreciated. Regards, Vsdguy

Hi all, I am new on the forum. I have a customer who is having some problems with running their motor with the VFD. I realized they had tampered with the setup parameters and luckily we corrected all the parameters. However, they have gained control on the motor, but the motor is...