Browse FAQs

Where can one go to obtain the peak energization inrush of a Square D low voltage dry type distribution transformer? When does the peak energization inrush occur and how long does it take before it settles down to the normal energization current?

Published date: 09 June 2020

Issue:
Product Characteristics

Product Line:
Low Voltage Dry Tpe Transformers

Environment:
UL 1561, NEMA ST-20, U. S. Fed Govt DoE 10 CFR 431


Cause:
Inrush information is useful when decision-making for overcurrent protection.

Resolution:

Since transformer inrush is design specific, the only place to request this data is from Product Marketing/Support.

Peak transformer inrush occurs in the first half-cycle of the applied sine wave, and reduces to the normal energization current within the first 6 cycles, or about one tenth of one second.


 

Was this helpful?

What can we do to improve the information ?

Can't find what you are looking for?

Reach out to our customer care team to receive information on technical support, assistance for complaints and more.