Limiting Values on Transformer Inrush

[ThePunisher]

One of our vendors has claimed that they can design the input transformers of their large rectifiers to be able to "limit the AC inrush up to 50% of FLA (68V pk-pk) and 100% asymmetrical max. (136Vpk-pk).

The input voltage to the transformer is 208V, three phase, 3 wire.

Based on the pk-pk voltages stated, I understand that they are reducing the voltage input to reduce the inrush current at the primary. What I am not sure of is the term "100% asymmetrical max.". Does this mean 100% of FLA?

Am chasing the vendor for to clarify this but a separate experience on this forum may also help. Thanks

 

[Skogsgurra]

V or A?

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[ThePunisher]

Its V, Im guessing this might be an wave capture calibration (could havemade more sense to be in mV).

 

[ThePunisher]

I got confirmation from the vendor that its 68Apk-pk and 136Apk-pk....it then implies that they are trying to design to limit the inrush current to within 50%~100% FLA RMS (or equivalent pk-pk value).

Thanks...

 

[h0001244]

So sorry, I have no idea what FLA is. Can anyone explain a bit more here, please?

 

[DTR2011]

FLA=Full Load Amps