Search results for query: *

This is not the only UPS load but would be our first motor to be operated under / after a UPS. All great suggestions - just wish it would be a standard option from a drive manufacture.

Should have stated that already have a VFD on the motor. This UPS is needed to keep the motor running during loss of utility power till the back-up generator is on-line. Since the generator should be on-line in a couple of minutes, the UPS would be sized for to keep the motor running for 5...

Been asked to determine a budget cost to provide a UPS feed motor as listed above. Never sized a unit of this size before so not sure where to start. Any suggestions / thoughts would be nice.

Refer to NFPA 497 Recommended Practice for the Classification of Flammable Liquids, Gases, or Vapors and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas and then referring to figure 5.9.1a you would have a 10' C1D2 circle around the pump for 18" above...

NFPA 33 Standard for Spray Application Using Flammable or Combustible Materials

The EE rated forklift is acceptable to be used in a C1 D2. A EX forklift is rated for use in a C1D1 rated area. We also have some EE rated propane lifts. We have both propane and electric EE rated units but only electric EX rated units. Hope that this helps.

We have a drum filling area that is C1D1 for 5' beyond the scale. The only reason that it is a C1D1 is that the filling operation is filling a 55 gallon drum through the bung opening and venting into the building. Once the drum is full, can we use a EE rated forklift to move the drum off the...

Watching Power Co test neutral with their 20 amp "unbalancer" I saw the loaded leg drop about 4 volts to approx 116 while the unloaded leg rose 4 to approx 124 volts. Since this is still within spec range of 120V +/- 5% they are satisfied that it works. Is it normal for the unloaded...

The unit is feed from a 40 amp 2 pole breaker (240 volt single phase) with #8 wire. Smallest wire in the system is #12. Did have a Oscope on the feed line. Waveform kind of looked like a chair with the back to the left. Not very sinusoidal. Only found this waveform with the Dyno running.

Follow this post on another site for more details http://forum.thedieselpage.com/cgi-bin/ultimatebb.cgi?ubb=get_topic&f=3&t=007460#000006 Any suggestions??

Superflow SF 840, Have had factory engineer out to try to resolve problems. Keep blowing rectifier units at low current flow. Presently have one controller that does seem to work but not at a steady state.

Friend has a new Dyno unit (device that measures HP of auto). It has a 20 amp 220 volt main feed and a seperate 120 volt control unit feed. Unit works properly with a generator but not from the utility feed. This is at his house in the country so has a utility pole transformer with a 200 amp...