Danfoss VLT FC 102 Operating Instructions Manual

Also see for VLT HVAC Drive FC 102: Operating instructions Service guide Programming guide Installation guide Installation guide

Contents

4.6.14 FusesBranch circuit protection:In order to protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines etc., must be short-circuitedand over-current protected according to national/international regulations.Short-circuit protection:The frequency converter must be protected against short-circuit to avoid electrical or fire hazard. Danfoss recommends using the fuses mentioned belowto protect service personnel and equipment in case of an internal failure in the drive. The frequency converter provides full short-circuit protection in caseof a short-circuit on the motor output.Over-current protectionProvide overload protection to avoid fire hazard due to overheating of the cables in the installation. The frequency converter is equipped with an internalover-current protection that can be used for upstream overload protection (UL-applications excluded). See par. 4-18Current Limit. Moreover, fuses orcircuit breakers can be used to provide the over-current protection in the installation. Over-current protection must always be carried out according tonational regulations.Non UL complianceIf UL/cUL is not to be complied with, we recommend using the following fuses, which will ensure compliance with EN50178:P160 - P250 380 - 480 V type gGP315 - P450 380 - 480 V type gRUL Compliance380-480 V, frame sizes D, E and FThe fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), 240V, or 480V, or 500V, or 600V depending on thedrive voltage rating. With the proper fusing the drive Short Circuit Current Rating (SCCR) is 100,000 Arms.Size/TypeBussmannE1958JFHR2**BussmannE4273T/JDDZ**SIBAE180276JFHR2LittelFuseE71611JFHR2**Ferraz-ShawmutE60314JFHR2**BussmannE4274H/JDDZ**BussmannE125085JFHR2*InternalOptionBussmannP160 FWH-400JJS-4002061032.40 L50S-400 A50-P400 NOS-400170M4012 170M4016P200 FWH-500JJS-5002061032.50 L50S-500 A50-P500 NOS-500170M4014 170M4016P250 FWH-600JJS-6002062032.63 L50S-600 A50-P600 NOS-600170M4016 170M4016Table 4.3: Frame size D, Line fuses, 380-480 VSize/Type Bussmann PN* Rating Ferraz SibaP315 170M4017 700 A, 700 V 6.9URD31D08A0700 20 610 32.700P355 170M6013 900 A, 700 V 6.9URD33D08A0900 20 630 32.900P400 170M6013 900 A, 700 V 6.9URD33D08A0900 20 630 32.900P450 170M6013 900 A, 700 V 6.9URD33D08A0900 20 630 32.900Table 4.4: Frame size E, Line fuses, 380-480 VSize/Type Bussmann PN* Rating Siba Internal Bussmann OptionP500 170M7081 1600 A, 700 V 20 695 32.1600 170M7082P560 170M7081 1600 A, 700 V 20 695 32.1600 170M7082P630 170M7082 2000 A, 700 V 20 695 32.2000 170M7082P710 170M7082 2000 A, 700 V 20 695 32.2000 170M7082Table 4.5: Frame size F, Line fuses, 380-480 VSize/Type Bussmann PN* Rating SibaP500 170M8611 1100 A, 1000 V 20 781 32.1000P560 170M8611 1100 A, 1000 V 20 781 32.1000P630 170M6467 1400 A, 700 V 20 681 32.1400P710 170M6467 1400 A, 700 V 20 681 32.1400Table 4.6: Frame size F, Inverter module DC Link Fuses, 380-480 V*170M fuses from Bussmann shown use the -/80 visual indicator, -TN/80 Type T, -/110 or TN/110 Type T indicator fuses of the same size and amperagemay be substituted for external useVLT HVAC Low Harmonic Drive Operating In-structions 4 How to InstallMG.16.A1.02 - VLT® is a registered Danfoss trademark 554