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?
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.
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.
Released for: Schneider Electric USA
