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  1. MrJam

    I need help determining cause of wave form distortion

    This is really great, I appreciate everyone’s input. I would love to track down the source of this anomaly, but unless it has anything to do with the burnt circuit boards I can’t really justify doing so. Is there anyway for these anomalies to effect the units if there not on the same branch...
  2. MrJam

    I need help determining cause of wave form distortion

    I would appreciate if you could explain what you mean when you say it’s a monitor problem. Also I'm not sure what you mean by a strong system.
  3. MrJam

    I need help determining cause of wave form distortion

    Heres the Picturehttp://files.engineering.com/getfile.aspx?folder=4635b08a-a559-475b-9a3f-fafc866cafd4&file=Example_1.bmp
  4. MrJam

    I need help determining cause of wave form distortion

    If it is a single piece of equipment causing the event, why would the load be distributed in such a way that it first spikes on C phase and B phases and then on A phase and B phase. Why wouldn’t it spike on all three at the same time? Is this because of rotor position at start up (assuming it’s...
  5. MrJam

    I need help determining cause of wave form distortion

    The below wave forms where captured with a hioki 3196 attached to the load side of the service disconnect of a 300 amp service. The service feeds a lot of computer equipment 3 liebert units and a large Mitsubishi U.P. S system. The distortion occurs at irregular patterns 2 to 4 times an hour...
  6. MrJam

    Power problem involving liebert Units circuit boards frying

    PSU was fried along with, what I believe is, a transistor on circuit board
  7. MrJam

    Power problem involving liebert Units circuit boards frying

    Here is figure 1 http://files.engineering.com/getfile.aspx?folder=608b9ce6-303b-4f2e-be32-9be1c3f4b9ff&file=Figure_1.bmp
  8. MrJam

    Power problem involving liebert Units circuit boards frying

    These readings where taken from a 300amp main on the line side of the disconnect. The building owner has had two liebert units circuit board fried and asks me to monitor the incoming lines. The voltage continually glitches as in figure one. I don't know what’s causing it but I suspect a large...
  9. MrJam

    Possible Power quality problems with cable company signal

    The problem is intermittent. I had one of the residents keep a log. I don't have it in front of me, but from what I remember it appeared to happen sporadically through out the day at no set intervals. I believe it was worse late at night. I'm not sure about the clustering. I inspected the area...
  10. MrJam

    Possible Power quality problems with cable company signal

    ADDENDUM: Obviously the pixelation only occurs with a digital signal, but wouldn’t some interference be measurable on the other televisions in the apartment.
  11. MrJam

    Possible Power quality problems with cable company signal

    I recently spoke to an occupant of the apartment complex who is experiencing problems with his reception and he told me that the problem only occurs with digital cable.
  12. MrJam

    Possible Power quality problems with cable company signal

    In my first post I mentioned multiple houses because that’s what I was told by the cable company. I'm sub contracting from the cable company. When I suggested monitoring for RFI, they informed me that they had the equipment to do that. They just wanted me to monitor the power. As a subcontractor...
  13. MrJam

    Problem with cable signal pixelation

    Recently A cable company ask us to do some power monitoring at a few of there subscribers houses. Apparently, their having trouble with the television picture tiling, or pixelating in these houses. They have tried everything they can think of. The company thought that it might be a power quality...
  14. MrJam

    Possible Power quality problems with cable company signal

    I installed a hioki 3196 on sight per-request of the cable company. I sure would like to have the answer for them, even if it’s not the power. Does anyone have any possible answer? The coax is shielded. I did notice the PVC conduit, that the main feed is pulled into the building in, is full of...
  15. MrJam

    Possible Power quality problems with cable company signal

    Recently A cable company ask use to do some power monitoring at a few of there subscribers houses. Apparently, their having trouble with the television picture tiling, or pixelating in these houses. They have tried everything they can think of. The company thought that it might be a power...
  16. MrJam

    What structured network cabling training is the best

    I'm looking for the right training course. The goal of our company is to be able to Bid on install and certify structured cabling systems we are all so interested in getting into fiber optic’s with no prior experience in cabling systems were does some one start. There are so many training...
  17. MrJam

    What training is the most advantageous in the structured cabling indus

    I'm looking for the right training course. The goal of our company is to be able to Bid on install and certify structured cabling systems we are all so interested in getting into fiber optic’s with no prior experience in cabling systems were does some one start. There are so many training...
  18. MrJam

    Power quality analyzers

    That’s just it I'm not sure what type of situation I'll need the meter for I don't want to buy it for the current application and then regret that I can’t use it for anything else I want to buy a well rounded unit I'm not familiar with the isolation rating what exactly does that refer to
  19. MrJam

    Power quality analyzers

    I’m looking for the Power quality analyzer that I can get the most out of We’ve looked at the Fluke, the Ideal, the AEMC, and the Hioki 3196 and have narrowed it down to the Hioki and the AEMC because of the flexibility of these to meters. The hioki is a great deal more then the AEMC. I’d like...
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