Schurter's popular power entry module, KFA series, is now equipped with an additional ground line choke to suppress high frequency interference arising from ground loops on the ground line. In addition, the newly added ground line choke improves asymmetric attenuation in higher frequencies in medical filter versions. The KFA series with existing common-mode choke on the phase and neutral conductors, together with an additional ground line choke, is well enhanced to address the growing EMC challenges facing compliance engineers today.

Ground loops arise through different impedances of different ground line connections in one or multiple pieces of equipment. While all ground connections have the same potential level for the 50 Hz load current, these can have different potential levels for high-frequency interference. The ground line choke,  which is wired between the power-inlet connector and the filter output, smartly addresses this phenomenon. Because of its placement directly at the power line input, high-frequency interference currents on the ground line are prevented from bypassing the filter through the equipment housing. The ground line choke isolates the equipment chassis against high frequencies and the equipment ground from the ground on the line power connection. This approach effectively breaks any possible ground loops.

Audio equipment for instance is known for being prone to ground loop problems. Often referred to as hum or buzz, the KFA, with ground line choke, is well suited for suppressing interferences that lead to diminished sound quality. The KFA is also well suited for medical equipment required to use low leakage
filters for increased patient safety. The reduced Y capacitance to ground, or absence thereof, leads to reduced asymmetric attenuation in higher frequencies. The KFA with ground line choke helps to compensate for this reduced performance.

The KFA power entry module includes an IEC C14 power inlet connector with a 1- or 2-pole fuseholder and EMC filter and is available in a wide range of models and designs. The series offers current levels from 1A to 10A at 250 VAC according to IEC and UL standards. The series has ENEC and cURus approvals and is suited for applications according to IEC 60950. Special filter versions, M5 and M80, are available for medical devices according to IEC 60601-1. Wiring is done using quick-connect terminals or wire leads. The KFA is compatible with V-Lock cord sets, designed to safeguard against unintentional disconnection of the power.

Technical Data / Approvals / Prices
- IEC C14 power-inlet connector with 1/2-pole fuseholder and a filter
- Filter standard, medical M5 / M80 versions
- Rated currents: 1, 2, 4, 6, 10A (ENEC / UL / CSA) at 40°C
- Screw or snap-in assembly
- V-Lock plug-retention safeguard

Application
- For applications with noise on the ground wire
- For applications with ground loops
- Applications with high asymmetrical attenuation requirements
- Suited for medical equipment according to IEC 60601-1

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Schurter expands its successful range of FMBC NEO 3-phase filters with a low leakage current series for applications where no high leakage currents are allowed. The new FMBC LL series of filters is designed for rated currents between 7 and 180 A. It is ideal for leakage current-critical industrial applications such as drive technology.

Today's electrical industrial installations are increasingly being fitted with residual current devices (RCD) to ensure efficient personal protection. This is also a requirement in certain countries for 3-phase systems, for example plug-in systems up to 32 A. The RCD limits the current to earth to a maximum of 30 mA. This poses a particular problem in drive technology since the frequency inverters that control the engine generate considerable leakage current.
Long motor cables further aggravate the problem since they increase the capacity to earth and hence the currents to earth too. The new series of FMBC LL filters helps reduce the leakage currents and permits compliance with common EMC standards as an efficient input filter.

The compact FMBC LL 3-phase filters have been designed for currents from 7 A to 180 A at an ambient temperature of 50 °C. They have UL approvals for ambient temperatures of +50 °C as well as +40 °C at a higher rated current. The FMBC LL is approved for rated voltages of 520 VAC. This means that they can be used in high-power systems, such as machines used in an industrial environment. Despite their high output performance, they are still compact and
lightweight in design.

The standard FMBC LL is fitted with a screw connection. Other types of connections including wires or copper bars are possible on request as well as customised modifications to the circuit or housing. SCHURTER also offers its own EMC measuring service for an optimum adjustment to the inverter. Therefore the most efficient filter solution for the system can be developed.

Technical Features:
- Rated voltage: 520 VAC
- Rated current: 7 A to 180 A
- Leakage current 7 – 55 A: < 5 mA, leakage current 75 – 180 A: < 20 mA
- Screw connections
- cURus approval: E72928

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When it comes to household appliances used in unattended operation, the provisions of standard IEC 60335-1 have in the past few years placed higher requirements regarding glow-wire ignition temperature (GWIT). These more stringent requirements thus also apply to installed components such as power sockets, fuse holders and connectors. For this reason, all components carrying current must meet the requirements of glow-wire tests as specified in IEC 60695-2-12 and -13.

As a leading producer of fuse holders and power sockets, Schurter manufacturers a large number of products made of plastic materials with high glow-wire ratings. These are above all shock-safe fuse holders in the successful FPG series, which are available in a wide range of shapes and sizes as well as fuse blocks for assembly on circuit boards. Power connectors rated for 10 A and 16 A, including with a wide range of assembly types and various terminals, also meet these stricter requirements.

Schurter thus fulfills and exceeds the strict guidelines concerning fire prevention for electrical devices that are operated in households unattended. Which appliances are considered to fall under the «unattended» category and thus need components of this glow-wire category is defined in standard IEC 60335-2. Examples of such appliance types are dishwashers, coffee machines, washing machines and kitchen stoves.

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To assist in the simulation of circuits, Schurter now offers SPICE libraries for common-mode chokes on circuit boards.  The new SPICE library contains simulation models for all common-mode chokes on circuit boards up to a rated current of 10 A. Also included are example circuits with which it is possible to examine the operational properties of various chokes before they are actually used in the circuit.

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FMCC SOL: 3-phase high-current filter
* Compact for highest performance
* 150 - 2500 A
* 520 or 760 VAC

Schurter is expanding its successful FMER SOL DC filter with a series for applications using 3-phase AC. The new FMCC SOL high-performance filter series is designed for rated currents from 150 to 2500 A. The devices are ideal for increasingly powerful inverters that require filters on both the AC and DC sides. Large inverters find use in photovoltaics, wind energy systems as well as in industrial applications and quick-charge stations for electric vehicles.

The very high-performance FMCC SOL 3-phase high-current filters are designed to handle currents from 150 to 2500 A at an ambient temperature of 50 °C. With a voltage rating of 520 V or 760 V, they can be used in all high-performance systems such as inverters for photovoltaic and wind power systems. Despite this high performance, they feature a compact, lightweight design.

The amount of renewable energy is constantly growing. As a result, ever more powerful and physically larger systems are being built such as for photovoltaics and harvesting wind energy. All these systems need high-performance inverters that are designed for optimal energy efficiency. Modern inverters with
MPP (maximum power point) trackers generate interference in both directions: on the AC grid side and the DC panel side. On the DC side, a filter in the FMER SOL series can be used for currents from 25 to 2300 A. These are enhanced very nicely on the AC side with the new FMCC SOL high-current series for
3-phase AC from 150 to 2500 A. Filtering on both sides of the connection lines helps to meet common EMC standards.

The FMCC SOL filter family has UL approvals for ambient temperatures of +50 °C as well as +40 °C with higher rated current. They are approved for voltage ratings of 520 VAC and 760 VAC. The high voltage rating of 760 VAC allows their use in IT power grids.

The FMC SOL up to 250 A is equipped standard with M10 screw connections and starting at 320 A with copper bars. Other connection types (stranded wire or copper bars for current levels less than 320 A) are available on request. In addition, customer modifications to the switching or the housing are also possible on request.

For optimal matching to the inverter, SCHURTER offers its own EMC measurement service. In this way,
the most efficient filter solution for a system can be easily determined.

Technical features:
- Rated voltage: 520 or 760 VAC
- Rated current: 150 A to 2500 A
- Connection versions 150 - 250 A: M10 screw connections
- Connection versions 320 - 2500 A: copper bars
- cURus approval: E72928

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Parlex is a leader in technology & process development in polymer thick film circuits and assemblies. We offer a full range of capability including circuit design & engineering, design for manufacturing, circuit fabrication, die-cutting, and surface mount technology.  Custom circuit are developed based on proprietary polymer thick film technology and the expert formulation of inks and the selection of dielectric materials. We provide unique circuit and sensor designs as an integral part of our customers’ advanced system products. Parlex is in the forefront of circuit and sensor product development that take advantage of our silver/silver chloride ink technology and medical hydrogels expertise.

Our flexible printed circuit capabilities includes a wide range of design choices including line spacing, materials, surface finishes and panel sizes.  Our broad ranging experience in laminated flexible flat cable provides superior reliability solutions in dynamic flex and service loop applications. The Parlex custom engineering capability includes unique solutions incorporating laminated flat cables, printed circuit boards and connectors, flexible printed circuits and EMI/RFI shielding.

Johnson Electric has introduced the Parlex Secure-Flex™ product as an innovative technology to increase security and  provide the highest protection against intrusion and tampering of critical areas within payment terminals.  Parlex Secure-Flex can be customized for any payment terminal, to protect the printed circuit board, smart card connector and keypads from tampering and data theft.  Secure-Flex is the Point of Sale industry’s only technology to offer protection against peeling, drilling and piercing intrusion.  Parlex Secure-Flex employs a unique breakable conductor technology, which disables the payment terminal if intrusion is attempted.  The increased level of security provided by Secure-Flex exceeds industry standards including PCI PTS and Union Pay. Secure-Flex technology also allows the option to deploy random security circuit patterns as an additional barrier to potential intruders.

The EMI-Flex product  is  an innovative electromagnetic shielding technology.  This technology improves the electromagnetic interference (EMI) and electromagnetic compatibility (EMC) characteristics of flexible circuits and laminated cables used in critical applications such as are found in the medical point of care and defense industries.  The Parlex EMI-Flex technology applies a highly conductive and flexible coating directly to the flex circuit for 360o shielding.  A precision production process allows custom shielding and impedance solutions to be designed and modified rapidly. Parlex EMI-Flex is ideal for applications requiring high EMI suppression and high EMC performance in conformable, compact, and lightweight designs.  Parlex EMI-Flex deployed early in the design cycle can avoid costly redesign due to EMI/EMC problems being discovered in product qualification tests.  The EMI-Flex technology provides cost effective shielding without bulky mechanical components.

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Power Entry Module Type 5707 combines an appliance inlet, shock-safe fuse holder, and standard or medical EMC filter. It offers IP65 seal protection and IP54 dripping water protection. V-Lock, an optional retaining device, prevents the power cord from unintentional disconnection. Several country-specific power cables are available with this option. The compact module is ideally suited for use in medical applications

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Given the high levels of integration in electronic systems, the demand for electrical components for use in higher temperature environments is continually increasing. This is where the new C22F appliance inlet and filter fills a gap. The first product of its type on the market performs exceptionally well in applications with higher ambient temperatures.

The new C22F filter series combines an IEC C22 high temperature appliance connector with a high quality power-line filter. The combined inlet and filter are especially suited for use in applications with nominal currents up to 16A at 75°C ambient and 20A at 65°C ambient. The unique design provides higher temperature ratings over comparable filtered inlets, while maintaining a similar compact size.

The combination power entry module integrates the EMC filter directly at the line input, providing an optimal effect on electromagnetic compatibility. The broad metal flange features a large amount of contact area, which further optimizes filtering and shielding effects. Wiring is done using quick-connect or solder terminals.

The standard C20F and new C22F series are designed for operating currents up to 16A at 250 VAC according to IEC standards and 20A at 125/250 VAC according to UL standards. They are ENEC and cURus approved. The two series are available in standard and medical versions suitable for applications according to IEC 60950, and medical applications according to IEC 60601-1. Such applications include power distribution units, servers, medical heating appliances and imaging systems.

- For high ambient temperatures
- Nominal current: up to 16A (ENEC/UL/CSA) at 75°C and 20A (UL/CSA) at 65°C ambient temperatures
- Version available with extra large X capacitor of 330 nF
- Filters available in standard and medical versions

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 Chasis Mount Filters

   ---------->  Schurter Chassis Mount Filters Overview

Power Entry Module Filters 

  ---------->   Schurter PEM Filters Overview

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Schurter expands its filter product portfolio, introducing EMC filters for DIN rail mounting series FMAB-RAIL and FMBB-RAIL for 1-phase systems, FMAC-RAIL for 3-phase-systems and FMAD-RAIL for 3-phase-systems with neutralline.

The FMAB-RAIL and FMBB-RAIL 1-phase filters are designed for use with 1x 250 VAC installations and the FMAC-RAIL 3-phase filters and the FMAD-RAIL 3-phase filters with neutralline are designed for use with 3x 277/480 VAC installations.

These new compact EMC filters are especially suited for use on TS35 (EN60715) DIN rails in industrial equipment and control systems. The DIN RAIL fixture and fitting concept facilitates simple and time-saving snap-in of the SCHURTER FMAB-, FMBB-, FMAC- und FMAD-filters

The FMAB-, FMBB-, FMAC- and FMAD-RAIL series possess UL-and ENEC Approvals.

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