Issue:
What is Peak Surge Current rating?
Product Line:
All APC Surge and Back-UPS products.
Environment:
All APC Surge and Back-UPS products.
Cause / Resolution:
Peak Current Rating (Maximum Current Rating) is the most current that the MOV device can handle without suffering irreversible damage.
The conditions are: peak current, wave shape, post test qualification/measurements [voltage & current], and time.
The MOV is subjected to a baseline voltage measurement with 100mA across the terminals. Then a 8x20 mS impulse current waveform with a peak of x kA (perhaps 2,500A) is applied. Then the voltage is remeasured with 100mA across the terminals. If it is still within +/- 10%, that kA rating is OK. The current is then boosted (say x+100A) remeasured, tested, remeasured, ... When the 100mA measurement falls outside the +/- 10% allowable window, the last kA measurement was valid.
Some mfrs state kA ratings with 1 and 2 pulses. You will see a lower kA rating with the 2 impulse because the part has already been hammered once , it is warmed up, the material within the part has not completely 'reset' itself , and
the second impulse must be within a specified time interval. The longer you can wait, the cooler the part, the better it can handle the next impulse.
In conclusion, it's the maximum peak current, using an 8 x 20mS waveform, that a MOV can handle where the 100mA voltage measurement test deviates less-than +/- 10% from the original baseline."
What is Peak Surge Current rating?
Product Line:
All APC Surge and Back-UPS products.
Environment:
All APC Surge and Back-UPS products.
Cause / Resolution:
Peak Current Rating (Maximum Current Rating) is the most current that the MOV device can handle without suffering irreversible damage.
The conditions are: peak current, wave shape, post test qualification/measurements [voltage & current], and time.
The MOV is subjected to a baseline voltage measurement with 100mA across the terminals. Then a 8x20 mS impulse current waveform with a peak of x kA (perhaps 2,500A) is applied. Then the voltage is remeasured with 100mA across the terminals. If it is still within +/- 10%, that kA rating is OK. The current is then boosted (say x+100A) remeasured, tested, remeasured, ... When the 100mA measurement falls outside the +/- 10% allowable window, the last kA measurement was valid.
Some mfrs state kA ratings with 1 and 2 pulses. You will see a lower kA rating with the 2 impulse because the part has already been hammered once , it is warmed up, the material within the part has not completely 'reset' itself , and
the second impulse must be within a specified time interval. The longer you can wait, the cooler the part, the better it can handle the next impulse.
In conclusion, it's the maximum peak current, using an 8 x 20mS waveform, that a MOV can handle where the 100mA voltage measurement test deviates less-than +/- 10% from the original baseline."
Julkaistu: Schneider Electric Suomi
Tarvitsetko apua?
Tuotevalitsin
Valitse tarpeitasi vastaavat tuotteet ja lisävarusteet nopeasti ja helposti.
Pyydä tarjous
Ota yhteyttä myyntilomakkeen kautta. Asiantuntijamme ovat sinuun yhteydessä.
Löydä lähin jälleenmyyjä
Löydä helposti lähin jälleenmyyjä.
Asiakaspalvelukeskus
Löydä tukiresurssit kaikkiin tarpeisiisi yhdestä paikasta.
