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  • Navitack or SR-20?

    Newly release SR-20 would be better than NaviTrack for tracing and locating the low voltage underground cable?

    Please advise me to select the better solution.

    Thanks in advacnce

    Sparkie

  • #2
    Sparky,

    Thank you for your question. Sorry for the delay in responding. We typically wait to see what types of responses you may get from end users before replying.

    The question of NaviTrack versus SeekTech is really a question of how you plan to use this equipment.

    NaviTrack has features designed to make the professional plumber’s job easier and more effective. Its primary use is to locate Sondes (remote transmitters) and conduct line tracing from the house or facility to the street.

    The SR-20 is our Utility Line Locator designed for those who primarily want to locate energized lines (any where at any time). It has more diagnostic features to help understand complex locates and may be a bit too much machine for those who simply want to locate Sondes and occasionally want to locate energized lines.

    If your primary purpose in purchasing a locator is to locate low voltage lines, both locators will work if you are able to put a signal on the line. The SR-20 will have some advance passive modes that may be able to help in those situations where putting a signal on the line is difficult.

    If you would like a demonstration of either product, you can always register on-line at www.ridgid.com/seektech. Select the request demo icon and our local district manager should contact you to set up a time.

    Sincerely
    Mark
    Mark F. Fleming<br />Product Manager<br />RIDGID/Kollmann

    Comment


    • #3
      LV Live Line Locating

      We purchased one unit of SR-20 with transmitter ST-510 & Inductive Clamp

      We are planning to trace the energized underground low voltage cables from the transformer to each customers by using direct signal connection to the LV terminal on the transformer based on your comment "The SR-20 is our Utility Line Locator designed for those who primarily want to locate energized lines (any where at any time)"

      1. But we saw the note in your manual saying that "The user is cautioned not to deliberately connect to live power lines. The protection is not intended to be used continuosly", this means we can not use ST-510 to trace the energized 220V ac power line ?

      2. When we wrap the inductive clamp around the power cable which flows 120A, we can hear the vibrating noise from the clamp, is it safe to conduct the survey with ST-510 with high ampacity live cable?

      3. Kindly explain more regarding "The SR-20 will have some advance passive modes that may be able to help in those situations where putting a signal on the line is difficult"

      Kind regards,

      Sparkie

      Comment


      • #4
        Thank you for your purchase of an SR-20. Hopefully I can clear up your issues.

        Before answering point 1, a question. Do these lines you are tracing have a hot, a neutral and a ground? Why wouldn't you connect to the ground to coduct your trace? The lines you are trying to trace should be grounded to your trasnformer pedistal. Hook up to the transformer's outer shell ground the transmitter and you should be able to trace these lines using any of the four active line trace frequencies.

        As for the discrepency between what I previously typed "energized lines" and the manual cautioning not to connect to "live power lines" - when a transmitter, like the 510, places a tone on a line, that line is considered to be energized. If you cannot put a tone on the line (energize it), you cannot trace it. For example, plastic lines cannot be traced with an electro-magnetic locator like the SR-20.

        On point 2, Our inductive signal clamp is a very powerful clamp. It is optimized to transmit at 33 kHz. It will work well at 8 kHz but due to the power of the clamp, it will make a noise and slightly vibrate at the 8 kHz setting.

        On point 3, We have a pure 60 Hz passive and a fifth harmonic (300 Hz) passive that will work well in well ballanced electric systems in picking up the magnetic energy given off by these systems. We also have the nineth harmonic (540 Hz) which is good at picking up general, active, electric lines. Most locators locate on the nineth harmonic when they do passive power. Some have the fifth. In addition to these passive modes, we can pick up rectified, cathodically protected lines at 120 Hz, we have a broad band passive electric that picks up signals at <4 kHz, and we have two radio modes. The radio modes pick up random signals between 4 kHz and 15 kHz (low radio) and 15 kHz to 38 kHz (high radio). Although all of these passive frequencies are available, by cycling through these various passive bands, you can find the ones that work best for your situation and then set up your SR-20 to utilize the best passive modes for your area.

        Our receiver works exactly the same in passive as it does in an active line trace in which you are using the 510 transmitter to energize a line.

        If you would like one of our salesmen to come out and demonstrate the passive modes, you can request a demo on-line at www.ridgid.com/seektech.
        Mark F. Fleming<br />Product Manager<br />RIDGID/Kollmann

        Comment


        • #5
          Mark,

          Thank you for kind reply and heres the answer to your questions

          1. Yes we have neutral but differs from your view are

          a. Our LV network uses TNC configuration and neutral wire is direct multiple grounded over the network. Without isolation of neutral wire from the bonding, the signal might be spreaded over whole neutral system and don't think we can trace the exact cable we're looking for among several service cables.

          b. Our plan was applying the tracing signal between the hot and ground(neutral) to maintain the signal level while in service

          c. If we could inject your unique signal (as lower as possible to avoid the bleeding over) to the hot and neutral directly then we can trace the cable without confusion.

          2. We could hear the sound when we closed the clamp probably from the EM from the live line current flowing. Isn't 60Hz induced energy from the 120A current harmful to the 510?

          If we are not able to inject the signal directly to the hot and neutral, our next option might be clamping around the live power line.

          Wouldn't EM created by high current(the worst case the current will be more than 1000A) destroy the transmitter?

          3. The last choice might be the passive mode tracing but at the moment we don't think this technology might be helpful at the highly density arera

          Thank you very much and look forward to hearing the good news from you

          Sparkie

          Comment

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