Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. BOBDELL

    Grounding Sola C.V.T.

    I answered my own Question,after looking closer at it I see it is already grounded.
  2. BOBDELL

    Grounding Sola C.V.T.

    Just a quick question,I recently purchased a Sola 500va cvt (mcr) to regulate voltage to a plc,Do I need to ground x2?
  3. BOBDELL

    Voltage Drop when starting large motors

    We had an inared survey done about 10 months ago,and I have had all the problems that showed up in the scan, repaired
  4. BOBDELL

    Voltage Drop when starting large motors

    I have ordered a cvt to solve the plc problem,should be here in about a week.As far as solving the voltage dip problem, I am having a hard to sell the company on the idea of installing RVS on these 2 300hp motors,their reasoning being that we have been starting them DOL for years.Like I...
  5. BOBDELL

    Voltage Drop when starting large motors

    I originally had the plc and remote i/o power supply hooked up to an APC 500va surge suppressor,and it was still dropping the processor.I thought the APC unit was also a UPS (it says it has baterries)
  6. BOBDELL

    Voltage Drop when starting large motors

    About 6 months I had a strange problem with this same 300 hp motor.When the operator tried to start up the motor after alunch break,the size 6 starter for this motor blew up for no apparent reason, and all motors on another MCC that were fed from the same service dropped out.The 300hp motor was...
  7. BOBDELL

    Voltage Drop when starting large motors

    I am going to install a cvt to eliminate the problem of the PLC dropping out for now,,but I think I need to re-evaluate the complete service. I am sure it is overloaded.It's the same old story,the company thinks that power is like a well that never runs out of water,they keep saying (we only...
  8. BOBDELL

    Voltage Drop when starting large motors

    What size cvt would you install for an A/B series 5/40 10 slot rack
  9. BOBDELL

    Voltage Drop when starting large motors

    I"m not sure if there are 6 leads, I think there may only be three. The motors have been rewound in the past. I like your forums and I look forward to being a member,Thanks again
  10. BOBDELL

    Voltage Drop when starting large motors

    Tahnks for your input I kind of thought that the load that is on that trans bank is on the high side and starting those 300hp motors,Is definitely causing these dips. I will look into installing soft starts for these motors. In the meantime I need to install some thing to maintain the 120v to...
  11. BOBDELL

    Voltage Drop when starting large motors

    I amhaving a problem with my 120v power dropping to 98.5v when starting up large (300 HP across the line 480v) motor in a sawmill. The lighting trans is fed from the same 480v distribution as the 300 hp motor. Total connected on the 1500 Kva transformer bank is 3132 H.P. Fla 4055, Any suggestions?

Part and Inventory Search

Back
Top