Vacon NX User Manual
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5vacon • 62 INSTALLATION5.4 Input chokesThe input choke carries out several functions in the Vacon NX Liquid-Cooled frequency converter.Connection of the input choke is necessary except if you have a component in your system thatperforms the same tasks (e.g. a transformer). The input choke is needed as an essential componentfor motor control, to protect the input and DC-link components against abrupt changes of currentand voltage as well as to function as a protection against harmonics. In chasses with multipleparallel line rectifiers (CH74) AC-chokes are required to balance the line current between therectifiers.The input chokes are included in the standard delivery of Vacon liquid-cooled frequency converters(not inverters). However, you can also order your frequency converter without the choke.The Vacon chokes listed below are meant for supply voltages of 400-500 V and 525-690 V.Table 25. Input choke dimensioning, 6-pulse supplyConvertertypes(400—500 VAC)Converter types(690 VAC) Choke typeThermalcurrent[A]Nominalinductance [0H]A/B*Calculatedloss [W]0016…0022 0012…0023 CHK0023N6A0 23 1900 1450031…0038 0031…0038 CHK0038N6A0 38 1100 1700045…0061 0046…0062 CHK0062N6A0 62 700 2100072…0087 0072…0087 CHK0087N6A0 87 480 2500105…0140 0105…0140 CHK0145N6A0 145 290 3800168…0261 0170…0261 CHK0261N6A0 261 139/187 4600300…0385 0325…03850820…11801850…2340CHK0400N6A0 400 90/126 6100460…05201370 (CH74)0416…05021300…15002700…3100CHK0520N6A0 520 65/95 8100590…065016400590…06501700CHK0650N6A0 650 51/71 890073020600750 CHK0750N6A0 750 45/61 97008202300- CHK0820N6A0 820 39/53 10200920…1030 - CHK1030N6A0 1030 30/41 11701150 - CHK1150N6A0 1150 26/36 14202470…2950 CHK0520N6A0 520 65/95 8103710 CHK0650N6A0 650 51/71 8904140 CHK0750N6A0 750 45/61 970Converter types written bold italic require three (3) chokes of the designated kind per unit with 6-pulse supply.Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com |
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