ZERO GROUND introduces dBzSHIELD™, three NEW types of shielded flexible liquidtight conduits designed for wiring applications requiring shielding effectiveness from Electromagnetic and Radio Frequency Interference (EMI / RFI)

dBzSHIELD™ EMI/RFI SHIELDED CONDUITS - FREE SAMPLE OFFER There are conduit manufacturers and there are EMI shielding manufacturers, but Zero Ground is the only company that specializes in EMI-shielded conduits. So make life easy for yourself! Try a sample, and see just how effective Zero Ground conduits are, and how easy they are to install. Click here to request your free sample now (please include name and delivery address). Delivery usually within 7 to 10 days.

Choose the dBzSHIELD construction type that meets your shielding requirements;

SBS™– Good Shielding
IBC™ – Better Shielding
BBS™ – Best Shielding

These conduits are used to protect sensitive electronic circuits such as communications, radar, and data transmission from outside interference or "noise". The reverse situation is also an issue. Today's Original Equipment Manufacturers (OEMs) are finding that, if they wish to ship electrical equipment into the European community, they may need to be in compliance with the European CE standard, which reduce the allowable amount of EMI/RFI emissions from electrical apparatus. All dBzSHIELD Shielded Flexible Conduits are RoHS compliant.

dBzSHIELD Shielded Flexible Conduits have been designed for Modified Commercial Off The Shelf (COTS) applications, offering a lower cost and standard fittings alternative to high-end mil-spec shielded conduits, which typically require expensive custom fittings. Complete specifications are available on the links below.

dBzSHIELD Shielded Flexible Conduits are designed to accept industry standard liquidtight connectors (ZERO GROUND recommends Thomas & Betts T&B fittings) and address the problems of assembly and grounding. Connectors of this type include a grounding ferrule, which contacts the internal metallic material of the conduit and the connector body. This produces a direct shield-to-drain or ground, simply by tightening the connector.

All conduits meet NEC 350 Liquid Tight Flexible Metal Conduit Type LFMC.

Listed below are simple product descriptions for dBzSHIELD Shielded Flexible Conduits:

Definitions of Product types:

SBS = Flexible Shielded Steel Conduit with Tinned Copper Braid and PVC Outer Jacket

L-SBS = Flexible Shielded Steel Conduit with Tinned Copper Braid and Polyurethane Outer Jacket

IBC = Flexible Shielded Bronze Conduit with PVC Outer Jacket

L-IBC = Flexible Shielded Bronze Conduit with Polyurethane Outer Jacket

BBS = Flexible Shielded Bronze Conduit with Tinned Copper Braid and PVC Outer Jacket (Also known as ZERO GROUND armor, it is a key component utilized in our HFES™ system solution for VFD’s)

L-BBS = Flexible Shielded Bronze Conduit with Tinned Copper Braid and Polyurethane Outer Jacket

(L = Polyurethane outer jacket)

Click here to request a data sheet on your choice of dBzSHIELD shielded flexible conduits by email.

Are you currently using or evaluating Zero Ground Flexible Shielded Conduits Types LAS, ZHLAS, EMS or EMSP? Please contact us to discuss availability.

Conduit Trade Sizes* (inch):

3/8"
1/2"
3/4"
1"
1 1/4"
1 1/2"
2”

*Larger Sizes Available Upon Request

 

SHIELDING EFFECTIVENESS

The chart above and table below depict the shielding effectiveness (attenuation in dBs) of the BBS, IBC and SBS conduits over a spectrum of test frequencies from 1 MHz to10 MHz Electric field, to 100 MHz to 1 GHz (1000 MHz) Planewave field. Tests were performed per MIL-STD-285 on 1/2" trade size conduit.

	1 MHz	10 MHz	100 MHz	450 MHz	1 GHz
BBS	127	130	136	116	118
IBC	126	122	131	98	97
SBS	126	98	75	76	66
Unshielded	110	80	53	63	51

 

dBzSHIELD Type SBS

Type SBS is a UL Listed liquidtight flexible steel conduit, augmented with a tinned copper shielding braid located over the inner steel core and under its protective PVC jacket. The braid offers a minimum of 90% coverage resulting in a shielding effectiveness range from 126dB @1 MHz to 66 dB @ 1GHz.

Email us to request Type SBS data sheet.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in INCH-POUND measurements, click here.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in METRIC measurements, click here.

For cutting instructions and conduit capacity chart, dBzSHIELD Shielded Flexible Conduits, click here.

APPLICATION:

-Meets NEC 350 Liquid Tight Flexible Metal Conduit Type LFMC
-This Conduit is intended for installation in accordance with Article 350 of the NEC (ANSI/NFPA-70)
-Suitable as an equipment grounding conductor per Article 250.118(7).
-Suitable for use in Hazardous Locations: Class I, Div. 2 and Classes II and III.
-PVC jacket is resistant to a wide variety of Oils, Acids, Alkaline and Ultraviolet Light. Polyurethane Jacket (ZHLAS) available.
-Listed and marked for Direct Burial and in Poured Concrete
-For a low smoke, low flame spread, zero halogen version, ask for Polyurethane jacket Type L-SBS
-Accepts Standard Liquidtight Fittings
-Consult factory for CSA information
-ROHS and WEEE compliant

STANDARD COLORS:

Black. Other colors and jacketing materials available upon request.

WORKING TEMPERATURES:

-20°C to 60°C. Optional ratings available.

Listed. Conforms to UL360 for liquidtight flexible steel conduit.

 

dBzSHIELD Type IBC

Type IBC has an inner core that is made from a fully interlocked bronze strip. Even though it does not contain a braided shield, it offers a shielding effectiveness from 126 dB @ 1MHz to nearly 100dB @ 1GHz. Email us to request information on compatible metallic brass (nickel-plated) fittings available for this bronze conduit.

Email us to request Type IBC data sheet.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in INCH-POUND measurements, click here.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in METRIC measurements, click here.

For cutting instructions and conduit capacity chart, dBzSHIELD Shielded Flexible Conduits, click here.

APPLICATION:

-Meets NEC 350 Liquid Tight Flexible Metal Conduit Type LFMC
-For a low smoke, low flame spread, zero halogen version, ask for Polyurethane jacket Type L-IBC
-Consult factory for UL and CSA information
-ROHS and WEEE compliant

STANDARD COLORS:

Gray. Other colors and jacketing materials are available upon request.

WORKING TEMPERATURES:

-55°C to 105°C

 

dBzSHIELD Type BBS

Type BBS is a hybrid of SBS and IBC. It utilizes the same bronze core and PVC jacket as IBC, but gets further screening protection from a tinned copper braid as found in the SBS product. Its range of shielding effectiveness is from 126 dB @ 1MHz to 120dB @ 1GHz. Three sizes of BBS (3/4”, 1” and 2”) are now UL listed. Email us to request information on compatible metallic brass (nickel-plated) fittings available for this bronze conduit.

Email us to request Type BBS data sheet.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in INCH-POUND measurements, click here.

For dBzSHIELD Shielded Flexible Conduits Trade sizes, Dimensions, Bend Radius and Weights in METRIC measurements, click here.

For cutting instructions and conduit capacity chart, dBzSHIELD Shielded Flexible Conduits, click here.

APPLICATION:

-Meets NEC 350 Liquid Tight Flexible Metal Conduit Type LFMC
-For a low smoke, low flame spread, zero halogen version, ask for Polyurethane jacket Type L-BBS
-Consult factory for UL and CSA information
-ROHS and WEEE compliant

STANDARD COLORS:

Black. Other colors and jacketing materials available.

WORKING TEMPERATURES:

-55°C to 105°C

Type BBS is also used as a component in a unique, patented wiring system solution called ZERO GROUND HFES™. ZERO GROUND HFES™ addresses issues associated with Adjustable Speed Drives in BJT, IGCT and IGBT technology(s), in conjunction with motors, motor cables, as well as PE ground grids, and rapid rise pulse phenomenon. ZERO GROUND HFES™ offers Safety & Reliability by reducing High Frequency Ground Currents to Zero and by directing fault currents away from hazardous locations. In addition, ZERO GROUND HFES™ extends motor life and significantly reduces unplanned downtime, due to issues associated with ASD’s / motor installations.