Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - What main contactor to use for AC system with regen?

Astro · 07-20-2014, 09:37 PM

I have searched around and i am finding it difficult to select a main contactor.

The main concern i have is that most contactors seem to have polarity preffernces. The main contacts being labelled with + and - or A1 and A2. Because the current can flow in either direction in an AC setup with regen i don't want to damage the main contactor.

Several data sheets for contactors mention things like magnetic blowouts which i have heard don't like reversed current flow.

Anybody with an AC motor setup like to share their contactor experiences?

07-20-2014, 09:37 PM	#1 (permalink)
Astro Dreamer Join Date: Nov 2013 Location: Australia Posts: 350 Thanks: 95 Thanked 214 Times in 151 Posts	What main contactor to use for AC system with regen? I have searched around and i am finding it difficult to select a main contactor. The main concern i have is that most contactors seem to have polarity preffernces. The main contacts being labelled with + and - or A1 and A2. Because the current can flow in either direction in an AC setup with regen i don't want to damage the main contactor. Several data sheets for contactors mention things like magnetic blowouts which i have heard don't like reversed current flow. Anybody with an AC motor setup like to share their contactor experiences?