General
Nominal voltage	520 VAC
Frequency range	48 to 63 Hz
Nominal current	180 A
Reduction range	2–16 kHz
Reduction capacity	up to 90 %
Degree of protection	IP20
Construction	Metal housing
Approvals	CE, UL
Standards	EN 60939, UL 60939-3, CSA 22.2 Nr. 8, RoHS
Voltage range	400–520 V AC
Operating frequency	50/60 Hz

The ABG NF-DAR-180-3 from EPA is a three-phase leakage current reduction filter, specifically developed for reducing high-frequency leakage currents in electrical installations. It supports the function of residual current circuit breakers, particularly type B and B+, in systems where increased leakage currents occur due to non-linear loads or other sources. The filter is designed for a rated voltage of 520 VAC (±10 %) and a rated current of 180 A, operating in the frequency range of 48 to 63 Hz. It reduces leakage currents in the frequency range of 2 to 16 kHz by up to 90 %, thereby increasing the reliability of residual current devices and reducing the risk of false tripping.

Applications

The filter is suitable for industrial and commercial electrical installations, especially in environments with many electronic devices that generate non-linear loads, such as frequency converters, LED lighting, computers, or switch-mode power supplies. In such installations, high leakage currents can occur, impairing the function of residual current circuit breakers. The ABG NF-DAR-180-3 enables the safe use of these protective devices by reducing the high-frequency components of leakage currents. It is designed for use in 3-phase networks and is suitable for installations with a voltage of 400 to 520 V AC at 50/60 Hz.

Functions and Equipment in Detail

The filter works by absorbing high-frequency interference currents occurring in the network. It is designed as an absorption filter, thereby directly reducing disturbances in the network without requiring additional filters or external measures. The reduction occurs in the range of 2 to 16 kHz, covering the typical frequency range of leakage currents from electronic devices. The maximum reduction reaches up to 90 %, representing a significant improvement in network cleanliness. The metal construction ensures a robust and long-lasting design, meeting the requirements of industrial environments.

Technology Explained Simply

The filter uses passive electrical components to absorb high-frequency interference currents. These disturbances are generated by rapid switching operations in electronic devices and result in leakage currents flowing through the earthing system. The ABG NF-DAR-180-3 reduces these currents by converting the energy of the disturbances into heat. The protection class IP20 means the filter is protected against contact with fingers or similar objects, but not against dust or water. It is therefore intended for indoor use, where no direct moisture or mechanical impact occurs. The rated voltage of 520 VAC (±10 %) covers the typical voltage range in 3-phase industrial networks.

Compatibility and Accessories

The filter can be combined with EPA EMC power filters, enabling the creation of a comprehensive interference protection solution. This combination allows targeted adaptation to the specific requirements of an installation, especially when both low-frequency and high-frequency disturbances need to be considered. The certifications CE and UL, along with standards EN 60939, UL 60939-3, CSA 22.2 No. 8, and RoHS, guarantee compliance with European and North American safety and environmental standards. Compliance with the RoHS directive means the filter is manufactured without hazardous substances.

Mounting and Installation

The filter is integrated into the electrical network, typically before distribution or before the residual current circuit breaker, to reduce leakage currents before branching. Dimensions are 512 mm (length) × 180 mm (width) × 115 mm (height), allowing installation in standard enclosures. Mounting is usually done by securing to a control panel or within an enclosure, with electrical connections made at the designated terminals. Installation requires no special tools or additional components, as the filter is designed as a standalone device.

Advantages in Operation

By reducing high-frequency leakage currents, the reliability of residual current circuit breakers is increased, improving the safety of the installation. The reduction of up to 90 % minimizes the risk of false tripping, especially with loads that generate high leakage currents. Compatibility with EMC power filters allows flexible adaptation to different requirements. The robust metal construction and compliance with international standards ensure a long service life and safe operation in industrial environments. Protection class IP20 is suitable for indoor use, where no direct exposure to moisture or dust is expected.