Staying Ahead of the Electrical Trends and Standards

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Staying Ahead of the Electrical Trends and Standards

Last month, at our St. Louis branch, we offered customers the chance to learn about the latest trends and standards within the electrical industry at our Trends and Standards Update. Attendees gained knowledge on the latest innovative products that can help customers stay compliant with standards and the latest trends to help drive safety, technology and efficiency.

These high-level presentations offered cutting edge solutions to help customers stay ahead of the electrical trends and standards.  The seminar offered updates from Mersen, SolaHD, Thomas & Betts, Hubbell Wiring Device- Kellems and LUTZE.

These presentations covered the following:

Mersen covered SCCR codes and standards, including UL 508A standards. The UL 508A marking confirms that the industrial control panel has been certified by inspection. If the UL 508A’s construction requirements are followed, then a panel builder is eligible to have their panel listed by UL. Mersen also explained short circuit current rating (SSCR) and the importance of properly labeling panels for Arc Flash compliance.

SolaHD has updated its SDU Series DIN rail AC UPS. Their A Series still combines an industry leading compact design with a wide operation temperature range and unique installation options. The SDU provides protection from impulses and power interruptions that could be potentially damaging. This updated product also offers a new interchangeable optional “COMM Card” accessory, that allows communication between fieldbus protocols and industrial Ethernet. SolaHD has also introduced a new CF Relay Card option that has replaced the RELAYCARDSDU option.

Thomas & Betts has created an evolution of compression tools. Their Color-Keyed coding system allows high quality UL-compliant connections at a low installed cost. Thomas & Betts covered the basics on how to properly prepare cable, determine the proper connector, choose the correct tool/die and crimp inspection. They covered how the Thomas & Betts Blackburn Color-Keyed® compression connector system can make inspections and certified installations easier.

Hubbell Wiring Device-Kellems recently released the first UL Listed pop-up receptacle for countertops. To protect against spills, the receptacle assembly is sealed with patent pending silicone gaskets to repel liquids in both the down and up positions. The countertop receptacle is UL Listed to 498 Section 146 to be water resistant to a half gallon of liquid spilled on the device.

Hubbell also recently introduced both their Advantage Pin & Sleeve product line to promote safety and provide line of site disconnect and their inSIGHT Circuit-Lock™ Disconnects with LED indicators to promote workplace safety and improve troubleshooting time.

LUTZE covered the evolving NFPA 79 standard. The recent changes to this standard aligns with IEC 60204-1. A change to Section 6.6 states that an arc flash hazard warning requires “warning qualified individuals of a potential arc flash hazard” pertaining to emergency stop or emergency off situations. New work space rules for enclosures with feeder conductors have been revised to align with section 110.26 of the NEC. To help users avoid dangerous errors the requirement for “width of working space” has been revised to specify the required opening and clearance into the control cabinet. LUTZE has a variety of cable offerings that meet the NFPA 79 standard.

Be sure to check out our website for information on upcoming events.  If you have questions or would like more information on products or concepts covered in this recent event, please contact your French Gerleman account manager or e-mail info@frenchgerleman.com.

 


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New Teal Ethernet Cat5e Cable from LUTZE

Reliability is one of the most important features any product can have, especially in a manufacturing environment. Reliability in data transmission has become increasingly critical. LUTZE has come out with a new Ethernet cable to help provide the reliability you need. LUTZE’s new flexible teal Cat5e Ethernet Cable is specially engineered to provide long-term protection and uninterrupted data transmission.

This new Cat5e AWM 600V Ethernet cable (part#104349) introduces a teal-colored PVC jacket (RAL 5021). This teal jacket has a matte, adhesion-free surface for ease of use. The Ethernet cable has maximum flexibility due to its 22/7 copper stranding. Its small outer diameter (OD) also aids flexibility and accommodates applications where easy routing is a requirement.

With Lutze’s new cable, there is no need to separate wires internally in machinery and electrical panels, thanks to its AWM 600V rating. This makes installation safer, easier and less expensive. The cable features 100% foil and 85% braid shielding for protection from harmful electrical interference, is capable of speeds up to 1 Gigabit per second and has a bandwidth of 100MHz per Cat5e. This cable can also go directly into the power limited section of a cable tray because of its PLTC listing.

These features make this Teal Ethernet Cat5e Cable perfect for anyone installing Ethernet cable industrially who are looking for functionality and ease of use. LUTZE’s new Teal Ethernet Cat5e Cable cuts costs in both material and labor, and is quick and easy to install.

Other features include:

  • UL AWM 2570 600V external use allows for installation alongside 600V power cables in accordance with NFPA 79 and UL508A, Clause 29.5.1A
  • Per NEC article 800, UL listed Type CMG allows for installation in communications cable trays
  • Per NEC article 725, UL listed Type PLTC allows for installation in power limited cable trays

If you need an Ethernet cable that provides flexibility, reliability and is easy to route, the LUTZE Cat5e AWM 600V Ethernet cable may just be the perfect fit for you. Contact your French Gerleman Account Manager to learn more about this capable Cat5e Cable.


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LUTZE DRIVEFLEX® Cable for VFD and Motor Applications

Variable frequency drive (VFD) cables have distinct advantages over traditional cables when used in drive and motor applications. When installed properly, VFD cables reduce cross coupling between drives and the shield contains and drains the electrical noise created by the drive. Their noise mitigation helps with the proper function of adjacent control systems and they help to reduce motor shaft voltage and bearing currents.

LUTZE DRIVEFLEX® cables are designed to cope with the power distortions in VFD applications. They offer superior electrical values for VFD or servo applications and are UL listed type “Flexible VFD Servo Cable, Flexible Motor Supply Cable” to comply with codes and standards regarding electrical wiring of VFDs. DRIVEFLEX® XLPE insulation has very low capacitance, high impedance and high voltage breakthrough resistance.  DRIVEFLEX® cables are safer and more efficient compared with traditional PVC/Nylon power tray cables or THHN wires in conduit.

LUTZE has recently expanded their DRIVEFLEX® line to include series A106 and A107, which are smaller diameter, general purpose series drive cables. Which type you use will depend on your specific project and requirements.

  • A106 series is great for most VFD applications and motors up to 40 HP and features a small outer diameter (OD) for easy routing and use in conduit.
  • A107 series cable is similar to the A106, but includes one shielded pair for brake or control signals.

Don’t trust your VFD and motor operations to tray cable or THHN.  Interested in learning more about DRIVEFLEX® or ordering it for your next project? Give your French Gerleman Account Manager a call today!


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Electric Motor Bearing Failure and Use of the Proper VFD Cable

What causes bearing failure to occur between the variable frequency drives (VFD) and electric motors?  What can be done to minimize the potential for failure?

ball bearing

For starters, the ball bearing is the connection between the shaft and the motor frame.  There are two rings: an inner ring (which is in contact with the shaft) and an outer ring (which is in contact with the motor frame).  The shaft turns due to electromagnetic interaction between inductors on the shaft and inductors on the frame. When the shaft turns, it drives the machine.

The problem lies in the connection between the VFD and the motor.  The VFD send power to the motor and some signal contents reflect off the motor and move back towards the VFD.  The reflected waves collide with the upcoming waves and this causes high voltage spikes.  The high voltage spikes cause strong electric fields which then influence the motor.

The voltage spikes and strong electric field then produce a high frequency flux around the stator.  If this frequency flux becomes high enough to overcome the impedance of the bearings’ oil film, a current starts to flow.  The end result is spark erosion.  Tiny metal particles of steel balls and rings melt and the bearing eventually fails.

LUTZE Driveflex VFD XLPE A216

However, LUTZE has come up with the perfect solution and that is to minimize the electric field.  A symmetrical construction results in a smaller electric field. The DRIVEFLEX® A220 is the most capable solution thus far of preventing bearing currents.  It connects all three earth wires and connects the cable shield to PE on both cable sides.

So, there you have it! LUTZE has created the solution to your bearing current problems with the DRIVEFLEX® A220.

LUTZE presented this information in an educational session at our recent Product and Technology Expo.  Check out the full presentation here.

Are you interested in learning more about this VFD cable solution?  Contact your French Gerleman Account Manager or contact us.

 


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Product Spotlight: LUTZE DRIVEFLEX®

Lutze

New from LUTZE is their DRIVEFLEX®, the most flexible drive cable in its class! DRIVEFLEX® is a family of drive cables designed to meet the unique electrical challenges in VFD and Servo applications. All DRIVEFLEX® cables use a special formulation of cross linked polyethylene insulation (XLPE), which provides exceptional electrical characteristics while maintaining superior flexibility.

Advances in VFD cable design offer the safest and most reliable solution to wire AC motors to VFDs, saving your time and avoiding safety hazards.

LUTZE Driveflex VFD XLPE A216

What can you use DRIVEFLEX® for and what are the benefits?

  • For VFD, servo and motor applications
  • For harsh industrial environments
  • For operating conditions with high interference noise levels
  • Specially formulated jackets for oil resistance and easy strip design
  • Sunlight resistant
  • XLPE thick wall insulation with low capacitance
  • Designed for long cable runs
  • UL listed “Flexible VFD Servo Cable”
  • WTTC for use in wind turbines
  • NFPA 79 compliant for wiring of industrial machinery
  • TC-ER for use with cable trays without conduit

5 reasons why you want a “true” and modern drive cable like DRIVEFLEX®:

  1. UL listed “Flexible VFD Servo Cable” for its intended use as VFD and servo cable.
  2. High impedance values and low capacitance values.
  3. Very flexible for routing and easy to strip. There is no conduit needed due to TC-ER listing and it is faster to install.
  4. Cuts down on electrical noise thanks to foil and braid shield.
  5. It provides the safest and most reliable connection from your drive to the motor.

Ready to learn more about DRIVEFLEX® or to place an order? Give your French Gerleman Account Manager a call today or contact us.