Wiring an 8274 + Albright

1911

chupacabra
 
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Warn 98381 is good for For Zeon 8, 8S, 10, 10S, 12, 12S Truck Winches, according to Amazon. So, it should be good for over 100amps, which is what a loaded winch will usually draw.

For the folks using the now discontinued Albright unit for the 8274 retrofits, looks like your older units are only good for 100amps continuous, if I'm not mistaken.

If anyone has a spec on the Warn 98381, that'd be good.

Albright:

DC88P-1000 is good for 100A, according to Curtis/Albright DC88P-1000 Motor Reversing DC Contactor in a Protective Case. This Albright data sheet shows that 185amps @30% duty cycle but the current vs time graph does show amps in excess of 500amps for a very short time is doable with this unit.

But,

Amazon contradicts and says flat out that DC88P-1000 is good for 500amp, to fit 6000 to 18,000lb winches. Check out the pics at this and also the same current vs time graph Link

My Warn M10,000 winch has drawn near 600amps fully loaded, probably from the outer layer or maybe one layer in of the cable. However, my steel cable is only 80' long on the drum, not the usual 125' or whatever it came with from the factory.
Some years ago, the Overland Journal did a nice test of five different popular winches, including a new 8274-50. The great thing about it was, they rigged up some hard and long pulls that could be duplicated for all of the winches, and they had a big clamp-on ammeter so they measured the current draw and the temperature of all the winches during these substantial pulls. Unfortunately, they have moved or removed the test article from their web site, so that my link to it doesn't work any more.

One of the more interesting things (to me) that came out of the test was that the largest amperage draw by far was on start-up under load. Once the winch gets turning, the amperage draw goes way down, but IIRC the 8274 drew in excess of 500 amps momentarily on start-up, then immediately settled down to about 200 amps for the heavy pull. The 8274 is a very fast winch, so a sustained pull of more than a couple of minutes would be rare. When I looked at the current vs. time graphs on the Albright web site years ago, they showed that the DC88P would handle 200 amps for several minutes, but I no longer have the link to their page (I didn't see it on the Amazon page). All this from my memory though, so subject to error. But it confirms what @alia176 is saying, that you want to size/spec whatever contactor you use for an 8274 to be able to handle 500+ amps momentarily and 200 amps for at least 2-3 minutes.
 

alia176

 
 
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I wonder if the Warn unit which costs way more than the Albright unit is indeed a more solid buy, assuming it has a better load rating. Still, I'd love to see the specs on the Warn unit.
 

1911

chupacabra
 
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I wonder if the Warn unit which costs way more than the Albright unit is indeed a more solid buy, assuming it has a better load rating. Still, I'd love to see the specs on the Warn unit.
You would hope so, though Warn is pretty proud of most of their parts. It's a sure bet that Warn doesn't manufacture their own contactors, surely they just buy them from some source like Albright (or even perhaps some Chinese manufacturer?). If they would publish the specs on it, then you could just source one with the same or better specs from Albright.
 

alia176

 
 
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You would hope so, though Warn is pretty proud of most of their parts. It's a sure bet that Warn doesn't manufacture their own contactors, surely they just buy them from some source like Albright (or even perhaps some Chinese manufacturer?). If they would publish the specs on it, then you could just source one with the same or better specs from Albright.
Yeah, that makes total sense.
 

BROKEROB1

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Good luck finding any specs on the Warn contactor. I went ahead and ordered/installed it on my 8274. Did a couple of test pulls under load and all seems fine.
 
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