Ultra high-performance filter for the highest shielding demands

The Ultra high-performance filter is a superior filter housed in a three-compartment casing with bolted covers and accessible terminals that achieves 100 dB insertion transmission loss at 14 kHz and above.

This series is offered as a two-line filter (single-phase and neutral) or as a four-line filter (three phases and neutral). The two-line filter can withstand up to 230 Volt, 1-150 amp, and 46 kW. If you are looking for a filter that can withstand more power we have the four-line filter, this filter delivers up to 400 Volt, 1-150 amp, and 138 kW. The neutral line is always attenuated and all conductors are decoupled from each other. This allows the conductors to operate independently without attenuation loss.

The filter is made to withstand the harshest environment and is very economical. Because of the custom design for your filter, the assembly is very simple and always with very low leakage. This filter is also a stock item and therefore always available quickly.

The circuit is designed as a symmetrical double- circuit with high-quality rod cores providing inductance. These cores do not saturate due to their large air gap and they are insensitive to asymmetrical load.

Foil capacitors ensure a long operating life by their self-healing features even after voltage transients. A seamless fixing of the filter casing to the shielded room is very important to ensure the correct operation. The filter is housed in a casing that has a base flange which provides stable mounting and excellent earthing when bolted to the shielded room via the mounting bolts.

Please note: EMP protection is available on request.

Technical data

Advantages

• For harsh environment
• Very economical use
• High performance
• Low leakage
• Easy mounting
• Stock item
• Custom design
• Insertion loss: 100 dB @ 14 kHz-40 GHz (MIL-STD-220C).

Applications

• EMC test laboratories
• Anechoic chambers
• Tempest rooms
• facilities

Rated current is available from 6 amp to 3000 amp in both single and three-phase versions. Filters are ideally suited for applications where the very highest performance is demanded.

Mounting

These protections are designed for mounting on the penetration panel or directly on the non-painted wall of the Faraday cage. Mounting terminals are dependent on the amount of power. Please see Connection in the Product range table.

Installation diagram

The technical drawing below shows how a power line filter is mounted on the wall of your Faraday cage.

General characteristics

For a clean main supply into a shielded room, high-performance filters are indispensable. Usually, these filters are directly mounted on the shielding wall. It is recommended to route filtered lines into the shielded room (Faraday cage) through the wall with an optional flexible metal conduit.

• Mains filter for single and three phase systems
• Insertion transmission loss 100 dB @ 14 kHz
• Double - ∏ circuit
• Rod cores allow asymmetrical load
• Self-healing effect of foil capacitors

Shielding performance

Circuits

2 line filter

4 line filter circuit

Single phase and neutral filter types: 230 Volt | 1-150 amp | 34 kVA

Three phases and neutral filter types: 400 Volt | 1-150 amp | 103 kVA

Outline drawing 2

Outline drawing 3

* If voltage between neutral and earth is 0V