Surge energy rating of SYLX

[BillP]

I wonder what is surge energy ratings ( Joules) of SYLX for its frame, power module, SYMIM5?

I can see the approvals on web site, but I am not sure how the approvals corresponds to Joules.
Thank you in advance.

[Erasmus_apc]

We don't have a set joule rating for the SYLX. The power modules and SYMIM5 intelligence modules don't need or have a surge rating as they are not "early" or "high" enough in the power path to be immediately affected by a surge. Do you have a surge-prone environment that you are installing the SYLX into? Why do you need this information, if you don't mind me asking?

I will check with our product team to see if there is any public information we can disclose that is more relevant to your question.

[BillP]

Thank you, I'll try to be more clear.
Generally, UPS for networks like SUA1000I has Surge energy rating ( for eg 320 Joules )

So it is a bit strange that large UPSs do not have the rating. At web site I can see that there is no surge rating for SYA16K16I. On the other hand I can see that the UPS complies with EN61000-4-5 : 1995 Surge immunity Standard. Right?



Unfortunately I do not have the satandard to read, but my question is how the standard correlates to surge energy rating? What is high energy transient characteristic in terms of Joules?


For eg: Surge 10 -700microsecs, High Energy.

[Erasmus_apc · Accepted solution]

Other than the fact that the LX units comply to UL1449 for a strict maximum on let-through voltage during a surge event, we don't have a joules rating on the unit or any part of the unit. This means that the unit has been certified to be safe for all IT loads, and all failure possibilities/modes are acceptable (MOVs burning up, clamping down on a surge, shunting to ground, or sacrificing itself to take the surge). Any other information we have would be in the manuals and online documentation. This is all the information I can give.

From experience in direct technical support and hands-on engineering education with the unit, I can say that I have never seen a SYLX be responsible directly, or indirectly for load damage. I have however, seen plenty of evidence of the unit failing beforehand, in the way of pictures and burnt parts coming back to our facility 😛