Power Quality Monitoring
Power Quality Monitoring Power Quality Monitoring
▼Chapter 4Dynamic power factor correctionApplicationsTrawlersONDynamic PFC systems are particularly used in applications with ↑Controller signalrapid and high load changes. In such cases, conventional PFCsystems are not fast enough to follow the load changes whichNetwork current withoutmeans that these systems are either undercompensated or overcompensated.dynamic PFCWith dynamic PFCElectromechanical contactors are not suitable for these types offrequent switching cycles. If contactors or capacitor contactorsare still used in such applications, the contactors are worn outvery quickly and this can lead to significant safety risks for thewhole system. Dynamic PFC systems avoid this problem withthe help of semiconductors. Semiconductors gently connect thecapacitors to the network i.e. without network perturbationsand capacitor stresses.Illustration: current reduction through dynamic PFCThis results in the following advantages: Improved power quality i.e. high inrush currents from power capacitors are avoided The lifespan of PFC systems is increased The safety of the full system is significantly increased (i.e. damages due to defective contactorsand as a result of exploding capacitors are avoided) Extremely rapid regulation of the power factor and therefore consequential reduction ofreactive power costs and kWh losses Voltage stabilisation (e.g. network support during the start-up phase for large motors) Improved utilization for energy distribution (transformers, cable, switch gear etc.) throughthe elimination of power peaks Process times can be shortened (e.g. welding)Typical applications Automobile industry (welding machines, presses...)With dynamic PFC Elevator systems and cranes Start-up compensation for larger motorsWithout dynamic PFC Drilling rigs in oil production Wind power plants WeldingWithout dynamic PFC Steel production Plastic injection moulding unitsWith dynamic PFCVoltageCurrentI in A↑ in secIllustration: comparison of current and voltage with andwithout dynamic PFC when starting up a large motor.139
▼Extractable modular designDe-tuned dynamic capacitor module in extractable modular designApplicationAutomatically regulated dynamic PFC modules in extractable design for applications with rapid and high load changes.This is an extractable module for use in existing cabinets or low-voltage main distribution systems.Nominal voltage 400 V, 3-phase, 50 HzProtection class IP00Reactor 5 ... 14%7 % ReactorCapacitor module M086FK7Th (width 800mm, depth 600mm)NominalpowerkvarSteppowerkvarSwitchingratioTypeItemnumber10 10 JF440/10EK1MO86FK7Th 50.18.650 2612.5 12.5 JF440/12.5EK1MO86FK7Th 50.18.680 2820 20 JF440/20EK1MO86FK7Th 50.18.710 3525 25 JF440/25/EK1MO86FK7Th 50.18.740 3540 40 JF440/40EK1MO86FK7Th 50.18.770 4550 50 JF440/50EK1MO86FK7Th 50.18.800 4720 10 1:1 JF440/20/2EK2MO86FK7Th 50.18.801 4025 12.5 1:1 JF440/25/2EK2MO86FK7Th 50.18.830 4230 15 1:1 JF440/30/2EK2MO86FK7Th 50.18.860 4640 20 1:1 JF440/40/2EK2MO86FK7Th 50.18.890 5750 25 1:1 JF440/50/2EK2MO86FK7Th 50.18.930 5875 25/50 1:2 JF440/75/2EK2MO86FK7Th 50.18.932 7680 40/40 1:1 JF440/80/2EK2MO86FK7Th 50.18.933 77100 50/50 1:1 JF440/100/2EK2MO86FK7Th 50.18.931 90kg14 % ReactorCapacitor module M086FK14Th (width 800mm, depth 600mm)NominalpowerkvarSteppowerkvarSwitchingratioTypeItemnumber10 10 JF525/10EK1MO86FK14Th 50.12.650 3612.5 12.5 JF525/12.5EK1MO86FK14Th 50.12.680 3720 20 JF525/20EK1MO86FK14Th 50.12.710 4225 25 JF525/25EK1MO86FK14Th 50.12.740 4340 40 JF525/40EK1MO86FK14Th 50.12.770 5450 50 JF525/50EK1MO86FK14Th 50.12.800 5620 10 1:1 JF525/20/2EK2MO86FK14Th 50.12.803 5725 12.5 1:1 JF525/25/2EK2MO86FK14Th 50.12.804 6430 15 1:1 JF525/30/2EK2MO86FK14Th 50.12.849 6940 20 1:1 JF525/40/2EK2MO86FK14Th 50.12.850 7150 25 1:1 JF525/50/2EK2MO86FK14Th 50.12.890 7375 25/50 1:2 JF525/75/2EK2MO86FK14Th 50.12.893 8280 40/40 1:1 JF525/80/2EK2MO86FK14Th 50.12.896 84100 50/50 1:1 JF525/100/2EK2MO86FK14Th 50.12.892 96Other nominal voltages, frequencies, outputs, reactors, mechanical designs or versions with circuit breakers are availableupon request. Refer to page 144 for accessories.kgH=330, W=703, D=550,A1=290, A2=14, A3=26,5All measurements in mm140
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▼Extractable modular designDe-tuned dynamic capacitor module in extractable modular designApplicationAutomatically regulated dynamic PFC modules in extractable design for applications with rapid and high load changes.This is an extractable module for use in existing cabinets or low-voltage main distribution systems.Nominal voltage 400 V, 3-phase, 50 HzProtection class IP00Reactor 5 ... 14%7 % ReactorCapacitor module M086FK7Th (width 800mm, depth 600mm)NominalpowerkvarSteppowerkvarSwitchingratioTypeItemnumber10 10 JF440/10EK1MO86FK7Th 50.18.650 2612.5 12.5 JF440/12.5EK1MO86FK7Th 50.18.680 2820 20 JF440/20EK1MO86FK7Th 50.18.710 3525 25 JF440/25/EK1MO86FK7Th 50.18.740 3540 40 JF440/40EK1MO86FK7Th 50.18.770 4550 50 JF440/50EK1MO86FK7Th 50.18.800 4720 10 1:1 JF440/20/2EK2MO86FK7Th 50.18.801 4025 12.5 1:1 JF440/25/2EK2MO86FK7Th 50.18.830 4230 15 1:1 JF440/30/2EK2MO86FK7Th 50.18.860 4640 20 1:1 JF440/40/2EK2MO86FK7Th 50.18.890 5750 25 1:1 JF440/50/2EK2MO86FK7Th 50.18.930 5875 25/50 1:2 JF440/75/2EK2MO86FK7Th 50.18.932 7680 40/40 1:1 JF440/80/2EK2MO86FK7Th 50.18.933 77100 50/50 1:1 JF440/100/2EK2MO86FK7Th 50.18.931 90kg14 % ReactorCapacitor module M086FK14Th (width 800mm, depth 600mm)NominalpowerkvarSteppowerkvarSwitchingratioTypeItemnumber10 10 JF525/10EK1MO86FK14Th 50.12.650 3612.5 12.5 JF525/12.5EK1MO86FK14Th 50.12.680 3720 20 JF525/20EK1MO86FK14Th 50.12.710 4225 25 JF525/25EK1MO86FK14Th 50.12.740 4340 40 JF525/40EK1MO86FK14Th 50.12.770 5450 50 JF525/50EK1MO86FK14Th 50.12.800 5620 10 1:1 JF525/20/2EK2MO86FK14Th 50.12.803 5725 12.5 1:1 JF525/25/2EK2MO86FK14Th 50.12.804 6430 15 1:1 JF525/30/2EK2MO86FK14Th 50.12.849 6940 20 1:1 JF525/40/2EK2MO86FK14Th 50.12.850 7150 25 1:1 JF525/50/2EK2MO86FK14Th 50.12.890 7375 25/50 1:2 JF525/75/2EK2MO86FK14Th 50.12.893 8280 40/40 1:1 JF525/80/2EK2MO86FK14Th 50.12.896 84100 50/50 1:1 JF525/100/2EK2MO86FK14Th 50.12.892 96Other nominal voltages, frequencies, outputs, reactors, mechanical designs or versions with circuit breakers are availableupon request. Refer to page 144 for accessories.kgH=330, W=703, D=550,A1=290, A2=14, A3=26,5All measurements in mm140
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