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I'm looking into building a contactor controller, but after looking at the costs for high amperage/voltage contactors made me think why anyone would want to build this?
I plan on using a 96V or 120V battery pack and placing contactors to get 24V, 48V, 72V and 96V speeds (maybe another 120V speed if I choose to go with that size). Do I need to get a contactor for each set of battery pack series?
This is the link I was consulting for contactor pricing: http://www.evsource.com/tls_relays.php
Also, I read that contactors sometimes come with built in diodes to prevent back emf. Is this standard for all contactors or should I consider getting some diodes separately?
Do I need to worry about "smoothing out" the power delivered to the motor after the contactor is switched?
Is it possible to "blow out" a contactor from too much current through the device?
I plan on using a 96V or 120V battery pack and placing contactors to get 24V, 48V, 72V and 96V speeds (maybe another 120V speed if I choose to go with that size). Do I need to get a contactor for each set of battery pack series?
This is the link I was consulting for contactor pricing: http://www.evsource.com/tls_relays.php
Also, I read that contactors sometimes come with built in diodes to prevent back emf. Is this standard for all contactors or should I consider getting some diodes separately?
Do I need to worry about "smoothing out" the power delivered to the motor after the contactor is switched?
Is it possible to "blow out" a contactor from too much current through the device?