{}

המותגים שלנו

Impact-Company-Logo-English Black-01-177x54

ברוכים הבאים לאתר האינטרנט של שניידר אלקטריק

ברוכים הבאים לאתר שלנו.
שאלות נפוצות
Why is line current of Altivar drive ATV340D30N4E, especially in heavy duty (HD) lower than line current of ATV340D22N4/E?
The RMS value of line current is affected not only by Altivar size but also by harmonics.
In drives up to 22kW (up to D22N4/E), the charging current during ATV power-up is limited by a pre-charging resistor that is bypassed after charging the DC bus.
In drives above 22kW, there is no pre-charging resistor but there is a semi-controlled input rectifier (thyristor + diode bridge) and moreover built-in DC choke. This DC choke is responsible for a significant drop in harmonics when comparing:
ATV340D22N4/E with THDi above 100% in HD (at 400V/50Hz)
ATV350D30N4E with THDi below 48% (at 400V/50Hz)
To express the exact ratio between ATV340D30N4E and ATV340D22N4(E) line current look at attached file.

שניידר אלקטריק ישראל

קבצים מצורפים
Line current of ATV340D30N4E vs ATV340D22N4.pdf [113.21 KB]
גלה עוד
טווח:
מאמרים שעשויים להיות מועילים
גלה עוד
טווח: