Danfoss VLT Aqua Drive FC 202 Operating Instructions Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

5. Electrical installation5.1. How to connect5.1.1. Cables GeneralNB!Always comply with national and local regulations on cable cross-sections.Details of terminal tightening torques.Power (kW) Torque (Nm)Enclosure 200-240 V 380-480 V Line Motor DC connec-tion Brake Earth RelayA2 0.25 - 3.0 0.37 - 4.0 1.8 1.8 1.8 1.8 3 0.6A3 3.7 5.5 - 7.5 1.8 1.8 1.8 1.8 3 0.6A5 0.25 - 3.7 0.37 - 7.5 1.8 1.8 1.8 1.8 3 0.6B1 5.5 - 7.5 11 - 18.5 1.8 1.8 1.5 1.5 3 0.6B2 111522302.54.52.54.53.73.73.73.7330.60.6C1 18.5 -22 37 - 55 10 10 10 10 3 0.6C2 304575901424142414141414330.60.6Table 5.1: Tightening of terminals.5.1.2. FusesBranch circuit protection:In order to protect the installation against electrical and fire hazard, all branch circuits in an in-stallation, switch gear, machines etc., must be shortcircuit and overcurrent protected accordingto the national/international regulations.Short circuit protectionThe frequency converter must be protected against short-circuit to avoid electrical or fire hazard.Danfoss recommends using the fuses mentioned in tables 4.3 and 4.4 to protect service personnelor other equipment in case of an internal failure in the unit. The frequency converter provides fullshort circuit protection in case of a short-circuit on the motor output.Over-current protection:Provide overload protection to avoid fire hazard due to overheating of the cables in the installation.Over current protection must always be carried out according to national regulations. The fre-quency converter is equipped with an internal over current protection that can be used forupstream overload protection (UL-applications excluded). See par. 4-18. Fuses must be designedfor protection in a circuit capable of supplying a maximum of 100,000 Arms (symmetrical), 500 V/600 V maximum.Non UL complianceIf UL/cUL is not to be complied with, Danfoss recommends using the fuses mentioned in table4.2, which will ensure compliance with EN50178:In case of malfunction, not following the recommendation may result in unnecessary damage tothe frequency converter.VLT ® AQUA DriveOperating Instructions 5. Electrical installationMG.20.M2.02 - VLT ® is a registered Danfoss trademark 235