480v Surge protectors

[titan1021]

So what do you guys do for 480v whole panel surge protection?

I've got a client with a food processing facility with multiple 480v panels, they are wanting to add surge protection to there equipment as they have been subjected to surges coming from the utility provider. I am considering using a surge protector like the one in the attached photo, (1) at each panel.
Anyone use these or have any input on another way to provide the surge protection.

Thanks

 

[electrofelon]

I recently used an Eaton cvx100-480y. I think it's just a matter of how much you want to spend.

I asked your same question a few months ago if you want to read over the thread:

SPD for 277/480

I have a customer that is hounding me to put in an SPD on a 277/480 wye 200 amp service. The service equipment is a Siemens MLO panelboard that currently has 3 service disconnects (BQD). Questions: 1. Any product suggestions? I am generally a subscriber to 'you get what you pay for'...

forums.mikeholt.com

 

[petersonra]

I doubt it makes any real difference what brand you use. Internally they are the same MOV's..

 

[paulengr]

I doubt it makes any real difference what brand you use. Internally they are the same MOV's..

The size of the MOV and the MCOV (cutoff voltage) matters. You want the biggest size and lowest MCOV. That’s why Walmart $12 power strips are throwaways while substation arresters have almost unlimited life. It’s all sintered metal oxides (mostly zinc) but how much you are paying for matters.

 

[petersonra]

The size of the MOV and the MCOV (cutoff voltage) matters. You want the biggest size and lowest MCOV. That’s why Walmart $12 power strips are throwaways while substation arresters have almost unlimited life. It’s all sintered metal oxides (mostly zinc) but how much you are paying for matters.

There's a big difference between a type 1 surge suppressor and a type 4, but for surge suppressors of similar ratings there is not much difference between brands.

 

[tom baker]

Mike Holt once said regarding SPDS
You get what you pay for
More is better

I used and installed 75+ of the Leviton 32,000 and 42,000 series, and a few of the 52,000. The 52,000 have replaceable modules, and all have dry contacts for monitoring
I would use a 42277 on the 277/480 and a 32120 on the secondary of any transformers. For a service over 200 amps I used the 52,000 series
After I started using the SPDs I noted that the failure of electronic power supplies stopped. I had a lot of small 60 amp services, maybe 15 for water reservoirs and those got the 32120 and the advantage was the dry contacts would indicate if there was a power failure, and of course if the SPD failed.
I had two SPDs that failed due to a car pole accident and overvoltage.
SPDs, or the MOVs inside, every day they see "hits" and eventually they quit, so monitoring the SPD is a must.
But at 480V, thats not big box stuff so most any SPD will work. Seems like the Leviton 32000 series is about $400 the 52000 are $500.
So a really robust SPD at the service entrance, and one at every panel.