en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
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97Calculation exampleDrive:• <strong>ACS800</strong>-<strong>04</strong>-0075-3• supply voltage U = 410 VTransformer:• rated power S N = 600 kVA• rated voltage U N = 430 V• transformer impedance z k = 7.2%.Supply cable:• l<strong>en</strong>gth = 170 m• resistance/l<strong>en</strong>gth = 0.398 ohm/km• reactance/l<strong>en</strong>gth = 0.082 ohm/km.Z k = z k · UN 2= 0.072 ·S N(430 V) 2600 kVA= 22.19 mohmR c = 170 m · 0.082m · 0.398 ohmkm= 67.66 mohmX c = 170ohmkm= 13.94 mohmI k2-ph=410 V= 2.7 kA2 · (67.66 mohm) 2 + (22.19 mohm + 13.94 mohm) 2The calculated short-circuit curr<strong>en</strong>t 2.7 kA is higher than the minimum short-circuit curr<strong>en</strong>t of the drivegG fuse type OFAF00H160 (2400 A). -> The 500 V gG fuse (ABB Control OFAF00H160) can be used.Technical data