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xEffect Residual Current Devices RCDs for machines and equipment with electrical drives

Challenges for machine builders The use of an RCD is an effective instrument for protection against electrical shock and fire prevention. Innovative electrical drive systems offer specific application solutions and improve the energy efficiency. In modern electrical equipments and machineries both components are used together in more and more cases. Thereby it is mandatory to consider the compliance with all standards and regulations. Especial attention must be paid here on the usual technical compatibility problems between RCDs and electrical drive systems. Unwanted trips of the RCDs can...

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Definition Benefits: • Reliable protection for machines with 1 phase frequency converters • Increased protection due to - detection of mixed frequencies - higher load rating with DC residual currents up to 10 mA • Reduction of nuisance tripping thanks to - time delayed tripping - high current withstand capability The type F RCD is defined according to IEC/EN 62423. It provides safe and reliable protection against sinusoidal residual currents and pulsating DC fault currents (like type A devices). It is also capable of handling residual currents with mixed frequencies of up to 1 kHz (10, 50,...

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Residual Current Devices Type B, Bfq and B+ Benefits: • Reliable protection for machines with 3 phase frequency converters • Safe power disconnection at smooth DC and AC residual currents • Detection of high frequency residual currents • Highest system availability by digital technology and pre-warnings Definition The RCCB type B detects (acc. to IEC 62423) beside AC and pulsating DC residual currents also smooth DC residual currents. With the extended sensitivity of the RCCB type B, electrical installers and machinery builders can increase the safety considerably in power distribution and...

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RCD Type B (acc. to IEC 62423) Standard type, sensitive to all residual currents up to 1 kHz RCD Type F (acc. to IEC 62423) Standard type, multi-frequency residual currents up to 1 kHz • PV systems • Battery banks • UPS units • EV charging • Medical devices • etc. RCD Type Bfq (acc. to IEC 62423) Non-sensitive against system caused earth leakage currents at high frequencies up to 50 kHz • 3 phase motor applications • Speed regulated machine tools Industrial applications which contain high-power frequency converter controls such as: RCD Type B+ (acc. to VDE 0664-400) For superior fire...

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Electrical loads that can generate smooth DC residual currents in the event of a fault must be assigned to their own circuit with a universal current-sensitive residual current protective device (type B, type Bfq or type B+). They are not suitable for installations in networks with frequencies that deviate from the rated frequency 50/60 Hz (not at the outgoing terminal of a frequency converter). RCDs type F are not suitable for appliances that can generate smooth DC residual currents, e.g. 1 phase FC with PFC or 1 phase FC supplied between phase/phase. In general, RCDs type F are designed...

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Possible residual current waveforms and suitable RCDs Circuit Suitable RCD - Type Suitable RCCB – Type B RCDs type F are not suitable for applications that can generate smooth DC residu- In general, RCDs type F are designed for applications with 1 phase frequency converters. But there are also 1 phase FC (frequency converters) designs which require RCD type B protection. The table shows the possible residual current waveforms and the suitable RCDs. Residual Current Residual Current LoadLoad Current Current al currents, e.g. 1 phase FC with PFC or 1 phase FC supplied between phase/ phase...

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Eaton hat sich das Ziel gesetzt, durch den Einsatz seiner Energiema-nagement-Technologien und -Dienstleistungen fur mehr Lebensqualitat zu sorgen und die Umwelt zu schutzen. Die nachhaltigen Losungen helfen den Kunden, elektrische, hydraulische und mechanische Energie sicherer, effizienter und zuverlassiger zu nutzen. Eaton erzielte im Jahr 2019 einen Umsatz von 21,4 Milliarden Dollar und verkauft Produkte in mehr als 175 Landern. Weltweit arbeiten rund 95.000 Mitarbeitende bei Eaton. Weitere Informationen finden Sie unter Eaton.com. To contact us please visit...

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