Coil voltage

My Nissan Leaf Forum

Help Support My Nissan Leaf Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Kornman

Member
Joined
Apr 18, 2013
Messages
5
Hi.
Does anyone know the coil voltage of the contactors in a Leaf -12 battery pack? Google is not my friend in this case (Panasonic AEV6505A seems unknown....).
 
Don't know if it will provide any useful information, but this blog post has an image of the relay, along with a lot of other good information:

https://www.summet.com/blog/2015/04/17/how-to-open-a-2013-nissan-leaf-battery-pack-and-remove-the-modules/

I noticed that there is a QR code sticker on the relay - maybe scanning the QR code would take you to a spec sheet? Worth a shot...
 
Thanks. But this guy, like me, writes that he cant find any specs on the contactors..... I have read the QR-code but it only states the serial number, already printed on the contactor.
I have tried different voltages, and the contactor "snapps" at 9 volts, so i guess it meant for 12V but i am not sure. Over- and under-voltage may overheat the coil.
 
Wolftronix posted that these are 250 to 300 Amp contactors with 12V coil voltage; need to have a flyback diode in your drive circuit; and recommends to PWM at 6V to hold it closed after pull-in.

Do you have a meter that you could measure the coil resistance? this would help calculate the power needed and the heating that would occur.

The contactors are polarized if you intend to use them in a diy project.
fsFous1.png
 
nlspace said:
need to have a flyback diode in your drive circuit;

Always the case when driving an inductive element, i.e. the relay coil, to protect the driver from the inductive overvoltage
at turn-off. A zener diode can also be used to clamp the inductive spike.


nlspace said:
and recommends to PWM at 6V to hold it closed after pull-in.

Would not recommend PWM @ 6V (~50% DC @ 12V) because of potential for continued contact bounce resulting in early relay failure.

nlspace said:
Do you have a meter that you could measure the coil resistance? this would help calculate the power needed and the heating that would occur.

The relay is rated for 12V, so the only issue would be the minimum coil holding current from the coil driver device, and avoiding
the coil driver's power dissipation.
 
Thank you all for very good answers!
Yes, i am using the contactor in a DIY project.
A 4WD, 4WS, fully electric mini loader. No hydraulics at all.
If anyone interested, scroll down to bottom of: https://www.maskinisten.net/viewtopic.php?f=98&t=311533&lv=0&start=120

Thanks again.
 
Hi. I was also looking the datasheet and found here and also this. They say 400V 200A with 12V coil.

http://www.electricvehiclewiki.com/wiki/bms/

good luck.
 
Back
Top