When not in use, the proper long-term storage is essential to help prevent failures upon startup, protect your warranty, and make sure you get the best performance over the lifetime of your gearbox. This video features long-term storage information and procedures related to Falk and Falk Renew Enclosed Gear Drives manufactured by Rexnord. Decatur Industrial Electric is an authorized Falk Select Partner repair service center (Click HERE to learn more). Rexnord is a leading manufacturer of gear drives and gear sets for the heavy-duty industrial market. Rexnord's Falk® and Falk Renew® Gear Drives are engineered to minimize stress and wear, as well as to extend service life.
Sometimes your six lead motors are configured to start in a Wye configuration and switch to a Delta configuration during the start-up known commonly as Wye Start/Delta Run. This starting method minimizes current demand during starting and reduces the impact on the power system, therefore, reducing the chance of the motor tripping off-line in a distressed power system. As motor analysts and technicians we need to remember that when de-energized the three phases are completely disconnected from each other. Connecting your MCE® test leads to motor leads 1,2,3 will indicate an open phase with no conductivity. The recommended approach is to move your test leads to each phase and test that phase separately. Referring to the handy dandy EASA Electrical Engineering Handbook we can determine which motor leads make up the three independent phases. Motor lead 1 and 4 (phase 1), motor lead 2 and 5 (phase 2), and motor lead 3 and 6 (phase 3). Also, remember that each phase can have its own independent resistance and capacitance-to-ground reading as a result of being disconnected from the other phases. From our friends at PdMA.
You guessed it. Heat. Excessive temperature is the #1 killer of electric motor insulation. However, not always does the remaining evidence lead the investigator to the root cause. So what could be the root cause of excessive heat? High resistance connections, severe rotor bar defects, improper ventilation, poor power quality, etc. With so many root causes resulting in high temperatures it is no wonder heat is the #1 killer of your electric motor. Get a handle on these root causes with your pdm technologies and you will get a handle on the heat. Info courtesy of our friends at PdMA. Click HERE to learn more about our electrical testing and PdM reliability services!
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We are committed to conducting our operations and problem solving products and service for our customers in an environmentally sensitive and responsible manner. A fundamental part of that commitment is being a proper steward of the natural resources. Furthermore, we believe that sound environmental policy advances our competitive strengths and benefits our customers, employees, stakeholders, and our company.
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An AC drive is a device used to control the speed of an electrical motor in order to:
- Enhance process control
- Reduce energy usage and generate energy efficiently
- Decrease mechanical stress on motor control applications
- Optimize the operation of various applications relying on electric motors
Drives can also be utilized to convert energy from natural and renewable resources like the sun, wind or tides, and transmit it to the electrical network or use it for local consumption. In hybrid technologies, AC drives are used to combine conventional energy sources and energy storages to create total energy management solutions.
AC drives are also known by various other names such as adjustable speed drives, adjustable frequency drives, variable frequency drives, variable speed drives, frequency converters, inverters and power converters.
Did you know?
- Emerging economies are driving the increase in energy consumption
- 20% of the world’s energy consumption is electrical energy
- 40% of electrical energy is used by electrical motors
- 75% of AC drives are used on pumps and fans
- Global electrical energy consumption could be reduced by 10% if AC drives were used in every suitable application
Contact our Danfoss factory trained team can help you analyze your processes and help you determine the right drive. To learn more about Danfoss, click here.