Shield-Flex® Flexible Conduit

Shield-Flex, by Electri-Flex Company, represents a line of three shielded conduits, SLA, EMS and EMCS, and is designed to protect sensitive electronic circuits from electromagnetic and radio frequency interference (EMI/RFI).

Shielded conduit provides exceptional shielding effectiveness from electromagnetic and radio frequency interference (EMI/RFI). Use it to protect sensitive electronic circuits from outside noise in such applications as communications, radar and data transmission. But shielded conduit doesn’t just keep interference out; it also keeps emissions in, which is vital to meeting European CE standards – an important issue for OEMs. Additionally, shielding conduits provide a redundant EMI/RFI system protection when using shielded cables with EMI/RFI shielded enclosures.

Cost Effective System Solution

Shield-Flex shields sensitive equipment and circuits from EMI/RFI emissions; both ingress and egress. Connector assemblies include a grounding ferrule that contacts the conduit’s internal metallic material with the connector body, producing a direct shield-to-drain (ground) simply by tightening the connector. Its flexibility and simple assembly means it takes less time to install. It uses off-the-shelf (OTS) connectors that are less expensive than high-end, mil spec shielded conduit that require costly custom fittings.

Markets and Applications

Shield-Flex is ideal for the following Applications and Markets:

• Aerospace
• Air Handling Equipment (HVAC)
• CE – European EMI Requirements
• Commercial-off-the-shelf (COTS) (CAGE Code: 09641)
• Data Centers
• Defense/Military/Government
• Healthcare/Medical
• Industrial
• Radio Broadband/Antenna
• Ship Building
• Solar/Wind Energy
• Telecommunications
• Test & Measurement Equipment
• Transit
• Utilities
• Variable Speed Drives
• Wireless Communications

Three Levels of Shielding Effectiveness

With three levels of effectiveness to choose from, Shield-Flex can meet your needs.

Good Shielding:  Type SLA is UL Listed, similarly to standard Type LA liquidtight flexible steel conduit, but is augmented with a tinned copper shielding braid located over the inner steel core and under its protective PVC jacket. It has a working temperature range of -30°C to 80°C dry / 60°C wet /70°C oil and the shielding braid offers a minimum of 90% shielding coverage.

Better Shielding:  Type EMS offers a better shielding effectiveness than Type SLA and has a working temperature range of -55°C to 105°C. Type EMS has an inner core made from a fully interlocked bronze strip and does not contain a braided shield. An all-temperature PVC jacket is extruded over the core, resulting in a sealed, waterproof raceway when assembled with liquidtight fittings.

BEST Shielding: Type EMCS is a hybrid of SLA and EMS because it utilizes the same bronze core and PVC jacket as EMS but gets further screening protection from a tinned copper braid as found in the SLA product. Type EMCS offers the same working temperatures as EMS.

Halogen-Free (HF) Series: For a low-smoke, low-flame spread, zero-halogen version, ask for HFSLA, HFEMS, or HFEMCS. It’s ideal for field installation in confined, public areas such as subways, tunnels, etc. The jacketing material virtually eliminates the release of acidic gases found in PVC products.

*Shield-Flex, SLA, EMS, EMCS, HFSLA, HFEMS and HFEMCS are trademarks of Electri-Flex Company, registered in the U.S. Patent and Trademark Office.