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  1. tedzrt800

    Switchgear Maintenance

    What is the standard and referrence for existing panelboard and switchgear electrical testing & maintenance? What is the desired interval for this maintenance? I have searched Manufacturers, NFPA, NEC, Nema and found little instruction yet, I am certain there must be an authority with multiple...
  2. tedzrt800

    Lighting/Surge arrestors in pump drive systems

    I have a well pump that has a ITT, Aquavar drive pump/motor assembly. It has a line reactor on the lineside of the drive. In the past 3 weeks we have had a couple lighting storms which have taken out the drive twice, (according to the vendor). Presently, we are installing a 3 phase Flowtronex...
  3. tedzrt800

    Speed control of single phase motor

    Thank you both for the reply. What I found was that even with a variable transformer the single phase motor had two issues. 1. It overheat 2. There was a loss of torque in this application. My solution was to couple and additional 5:1 ratio gearbox on to the existing 30:1 that gave me the...
  4. tedzrt800

    Speed control of single phase motor

    I have a 115volt 1750 rpm 8.2 amp single phase motor. What options are available to control the motors speed, excluding sprocket sizing? Where it is a single phase motor is a drive possible?
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