tel : 82-32-817-4325 r esistors a nd fax : 82-32-817-4329 r esistive a pplications website : http://www.raraohm.com email : sg@raraohm.com dbu dynamic braking unit features - used for load with relatively high damping frequency(ed), 20%. - up to a max of 4 parallel dr iving control units is possible. - used for load with high damping frequency. general specifications model max input direct current voltage applicable inverter capacity [kw] damping resistance capacity[kw] min resistance value[ ? ] it150dbu-2h 200v series dc 400v 11 kw 15 kw 3.2 kw 8.5 ? it220dbu-2h 18.5 kw 22 kw 30 kw 4.8 kw 5.7 ? it370dbu-2h 37 kw 45 kw 6.4 kw 4.2 ? it550dbu-2h 55 kw 9.6 kw 2.8 ? it150dbu-4h 400v series dc 800v 11 kw 15 kw 3.2 kw 33.9 ? it220dbu-4h 18.5 kw 22 kw 4.8 kw 22.8 ? it370dbu-4h 30 kw 37 kw 6.4 kw 16.9 ? it550dbu-4h 45 kw 55 kw 9.6 kw 11.4 ? IT750DBU-4H 75 kw 12.8 kw 8.4 ? characteristics dimensions surrounding temp -10 ~ 40 humidity relative humidity of under 90% rh(should be no dew condensation) altitude under 1000m above the sea level cooling way natural cooling surrounding circumstance there should be no corrosive gas inside panel, oil remnant, inflammable gas and dust inside panel. max turn on time 6sec protecting function protection of heat sink?s overheating, over current and output shortcut output signal heat sink heating, fuse open, oc trip signal parallel driving up to a max of 3 parallel driving units is possible. allowed damping frequency without cooling fan, 10% ave damping torque 100%
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