Vacon NX Active Front End User Manual

Contents

Active Front End (AFE) vacon • 3524-hour support +358 (0)201 212 575 • Email: vacon@vacon.com44.11 Active Front End unit – Fuse selection4.11.1 IntroductionAC fuses are used to protect the input network in case the Active Front End unit or the LCL filter isfaulty. DC fuses are used to protect the Active Front End unit and the LCL filter in case there is ashort circuit in the DC buses. If DC fuses are not used, short-circuit in the DC buses will cause aloading of the Active Front End unit. Vacon Plc will not assume any responsibility for damagescaused by insufficient protection.4.11.2 Fuses; mains voltage 380–500 V4.11.2.1 AC fusesNOTE! Fuses for FI9 and FI10 are blade type and for FI13 flush-end type. If some other type is needed, pleasecontact Vacon.NOTE! All fuses are blade type. If some other type is needed, please contact Vacon.Table 10. Ferraz Shawmut AC fuse selection, mains voltage 380–500 VacModule AC fusesType Code Frame Ferraz Shawmuttype [aR]*UN[V]I N[A] Size Q'tyAFENXA_0261 5 FI9 NH2UD69V500PV 690 500 2 3NXA_0460 5 FI10 NH3UD69V800PV 690 800 3 3NXA_1300 5 FI13 PC44UD75V22CTQ 750 2200 44 3Table 11. Bussman AC fuse selection, mains voltage 380–500 VacModule AC fusesType Code Frame Bussmantype [aR]*UN[V]I N[A] Size Q'tyAFENXA_0261 5 FI9 170M6202 1250 500 3SHT 3NXA_0460 5 FI10 170M6277 1250 1000 3SHT 3NXA_1300 5 FI13 170M6277 1250 1000 3SHT 3x3