electrical repair

1500 HP Aggregate Mill Motor

A large aggregate company in Southern Indiana that Horner Industrial has serviced for years contacted Horner as they had a 1,500 HP 180 rpm Open Frame AC Wound Rotor/Synchronous motor that needed to be removed, rewound, and reinstalled. This motor was manufactured in the 1950’s and it was one heavy piece of iron. (42,000lbs) Once it was removed, transporting it posed a challenge to Horner’s Logistics Department as it had to be transported on a special “low-boy” semi-trailer due to its size. We had to make sure that it would pass under all the overpasses on I-65 from Louisville to Indianapolis. [...]

1500 HP Aggregate Mill Motor2019-09-10T16:00:16-04:00

52 to 2 Amps 1500 HP DC Drive Project With CoolBLUE

In September Horner was called out to a rubber manufacturer in Tennessee to measure common mode currents on a 1500HP DC Drive. The drive end gearbox had just failed. It was found that they had bearing fluting that went through the DC motor into the shaft of the gearbox and into the bearing. The DC drive was connected to the gearbox and that gearbox was connected to a mixer. It mixed raw rubber for the plant.  They measured that the amps were destructive and could cause damage by bearing fluting in the future and they would have the same problem all [...]

52 to 2 Amps 1500 HP DC Drive Project With CoolBLUE2019-09-18T15:36:46-04:00

1000 HP Challenge

We have a saying that “if you are not making mistakes, you are not doing much.” Well, that holds true for our customers, as well. Recently, a customer connected a 1000 HP DC motor improperly and the motor was operated until the field and interpole coils failed. Dan Sneary inspected the motor out on-site and determined the windings had failed. The customer did not have a spare motor so this job turned into a full overtime repair job. Bill Roper handled all of the customer communications so our shop could concentrate on the repair work and meeting a one-week deadline. This [...]

1000 HP Challenge2019-09-10T16:00:18-04:00
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