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dU/dt output Filters for 3-phase frequency inverter FMAC - 0A Series, Protection Class I Nominal current: Rated voltage UR (Umax): Voltage rise rate dU/dt: Leakage current: Test voltages: Application class: Inrush current: 8 - 32 A @ ϑ ϑa 40°C 550 V 50/60 Hz ≤ 500 V/µs Standard L → E 3 kVDC, 2 sec L → L 2.25 kVDC, 2 sec 25/100/21 acc. to IEC 60068-1 1.5 x IN 1 min. per hour Approvals obtained or pending: TIMONTA dU/dt output filters reduce the voltage rise rate of inverter output voltage and limits the peak voltage, protecting the motor winding. Inverters are powerfull semiconductor devices working in Pulse Width Modulation (PWM), generating very high edge stepness of its output voltage (ca. 3000V/µs). This brings to several disadvantages: overheating and damage of motor windings / bearings, high electromagnetic radiated disturbances (EMI) and also acoustic noise. • Standard versions include insulated safety screw terminals (IP 20) • Key features of this dU/dt output filter range include: − motors can be fed through long cables − enhancement of the system efficiency − reduction of EMI, increased EMC performances − increase the system reliability − 550 Vac rated voltage for world wide applications These disadvantage bring to oversizing the motor and overcost due to the use of screened cables. Timonta dU/dt filters reduce the voltage rise rate down to 500V/µs and limits the peak voltage under 1000V peak (at 550 Vac output voltage). • Range of use: − inverter switching frequency: 4-16kHz − max. lenght of motor cable: 40m − the power dissipation of the filter depends upon the switching frequency of the inverter, the lengh of the motor cable and the voltage. The given values refer to 20m cable and 4kHz switching frequency. For other conditions check the application range table and inquire by Timonta. − Compact cases Technical Data Type IN (1) @ ϑa 40°C FMAC-0A24-0813 FMAC-0A27-1613 FMAC-0A40-2513 FMAC-0A38-3213 UR (Umax) [A] [V] 3 x 8 3 x 16 3 x 25 3 x 32 550 550 550 550 L Resistance L-L -30%+50% ± 15% [mH] [mΩ] N 3 3 3 3 x x x x 0.2 0.2 0.2 0.2 22.0 11.6 9.2 9.2 Max. leakage current @ 50 Hz In 3-phase systems (2) 440 VAC [mA] < 0.5 < 0.5 < 0.5 < 0.5 (1) Current derating depening upon application conditions (2) Measured according to IEC 60950 - 5.2.4 - 5.2.5 Circuit diagram Drive Rating Converter Motor rating [PS / HP] [kW] 5 10 15 20 90 3.7 7.5 11 15 Recommended Filter Type Converter rating [kVA] to to to to 6.8 12.2 20 26 Recommended filter IN [A] 8 16 25 32 C Case Terminal blocks ±10% 2 [nF] 4.7 4.7 4.7 4.7 [mm ] 24 27 40 38 4 4 6 10 Block diagram Voltage at the motor Application range with output voltage 400 VAC, @Ta 40°C, function of type, motor cable length, switching frequency and duty cycle. Type Motor cable length [m] at inverter switching frequency continuous operation FMAC-0A24-0813 FMAC-0A27-1613 FMAC-0A40-2513 FMAC-0A38-3213 4 kHz 8kHz duty cycle 25%, 60min. 16kHz (*) 30 30 40 40 10 10 20 20 10 10 20 20 (*) These filters can also work at 16 kHz switching frequency with same cable length specified for 8 kHz, but with reduced duty cycle (25%, 60min.) or with filter cooling to limit the case temperature to 85°C max. Mounting instructions The filter case has hot points when working: do not mount it near to inflammable objects. Leave free space around it for air circulation and mount it on a metal surface. Case 24 Case 27 Case 40 Case 38 91