Power Transmission
virtually all types of low voltage, 3 phase motor such as Explosion proof; Severe Duty; Vertical duty; 2, 4, 6 and 8 pole; Brake motors; all mounting types and any frame type, NEMA or IEC metric.
What does this mean for OEM Exporters?
By the end of this year, almost all low voltage, 3-phase electric motors exported to the US and Canada will be subject to new legislation. Therefore, it would be wise to be ready for this and review any machinery designs that incorporate such motors as soon as possible. Higher efficiency motors do have many different
characteristics when compared to their lower efficient counterparts such as: lower full load current rating; higher inrush on line starts; possible larger frame sizes for low power motors (not NEMA frames); possible smaller frame sizes for higher power motors (not NEMA frames); different starting, pull out and breakdown torque levels; cooler running, less heat to dissipate. These and other possible design issues will need to be
considered by the OEM in their machinery designs. Other design considerations of the new legislation include: EISA requires that any custom motors included in OEM equipment that fall within the guidelines of the act will comply with the efficiency levels for that type of motor. Each OEM should prepare for the changes well before December of 2010 and develop designs promptly, particularly when UL or CSA approvals are required. EISA makes no distinction for duty cycle rating. The US DOE (Department of Energy) considers motors
built to IEC metric frame dimensions that are equivalent to NEMA T-frame dimension (IEC 90 frames and larger), to fall under EISA. The legistaltion makes no distinction between stock or custom motors. It applies equally to motors manufactured outside of the US and imported for use. This also includes the electric motors ‘as a component of another piece of equipment’. EISA requires that an electric motor’s
USB Isolation: strong enough for medical applications
M
edical systems require at least two independent isolation systems to protect patients and personnel. Some systems must comply with the IEC60601 standard – isolation of all interfaces, peripherals or data collection devices that come in contact with the patient. B&B Electronics’ new Ulinx USB
isolator, with 4kV isolation, conforms to IEC60601 specifications for hospital and medical
applications.The model UH401,
nameplate include the nominal full-load efficiency for that motor rating. The US Department of Energy has issued a notice of
enforcement and are preparing to test motors for compliance. Failure to comply with the EISA legislation may lead to costly problems in getting machinery into the country. Policing in the case of the USA (and most likely Canada), will be at two levels, port of entry customs officials and installation inspection and approvals. Failure to comply will result in rejection of the entire machinery, possible fines and prohibition of future sales into the US market.
Where to find help
But help is available. Your motor supplier should be able to offer help, but independent help is available from the NEMA and ACEEE sites. Baldor is a leader in industrial motor energy efficiency and has led the North American continent into the new MEPS age; as such we are able to provide guidance into the preparation for and meeting of the new legislation. Baldor Brochure MS501 has been produced specifically for OEM’s to help them understand the EISA legislation and is available to download from our web site. This document includes the NEMA efficiency tables to assist in motor selection and a full overview of the EISA legislation regarding electric motors. In addition, Baldor has added the Nema Premium Efficient motors to Its European stock range in order to provide immediate delivery to OEM’s now and in the future. l
Enter 37 or ✔ at
www.engineerlive.com/ede
Robin C H Cowley is Industrial Marketing Manager – Europe, Baldor UK Ltd, Bristol, UK.
www.baldor.co.uk and
www.baldor.com/support/literature_loadasp?LitNumber=MS501; NEMA Premium Motors:
www.nema.org/gov/energy/efficiency/premium/index.cfm; American Council for an Energy Efficient Economy:
http://aceee.org/motors/prmtrs.htm
The ultra-compact design inserts directly into the USB signal lines of existing medical applications - without additional components or software modifications. High retention USB connectors provide solid connections that won’t pull loose easily.
features up to 4kV isolation, ensuring high reliability and protection from damaging electrical storms, spikes, power surges and other high EMI/RFI disturbances. The isolation barrier eliminates disruptive ground loops in measurement applications.
Operating temperature of -40 to 80°C adapts to a wide range of applications. LED indicates power supplied via upstream USB port. Up to 100mA of current to attached downstream devices. With USB bus powering, no external power is needed. Includes one-meter, Type A to Type B USB cable. l
Enter 37A or ✔ at
www.engineerlive.com/ede
B&B Electronics is based in Galway, Ireland.
www.bb-europe.com www.engineerlive.com 37
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