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Thanks for the webinar! Certainly useful information to have or revisit. A few topics that I believe would have been useful to address (and could be done so in a future webinar?), and/or maybe mention the reference material(s) where answers to the subsequent questions could be found: 1. Which fall-of-potential does Glen recommend using during the aforementioned HM scenarios? As in, how many measurements are being taken (10, 3...the 52%-62%-72% method, or one...the very truncated 62% method)? In the field, it seems as though the 62% method is the most common. Doesn't strike me as being sufficient (to trust 1 reading, rather than establishing a curve), especially in light of the notion of redundancy for safety purposes. 2. Is there an assumption being made about where the damaged container came to rest, and the direction of static dissipation flow? More specifically, is the ground upon which the container sits being tested (especially considering the potential for varying soil types on a given scene)? Is it possible that the grounding field established to dissipate the static charge is actually higher than the ground upon which the damaged container is sitting? 3. Do the leads need to be 10 times the diameter of a grounding field in an emergency situation? What are the potential issues of having leads that don't meet that, or there's no suitable place to at that distance to set up a grounding field? Moreover, how much does the length of the cables used to ground the containers affect relaxation time? Is there a direct correlation, and what consideration needs to be given to gpm as it relates to cable length (50 ft can handle x gpm in regards to dissipation, does a 100 feet cut that gpm in half, etc.)? 4. Glen mentioned testing the resistance between the container and the clamps/cables. That is not something that I've ever seen in practice. Is there a reference guide for doing this portion? Or does he have a recommendation? 5. Is it possible to over-saturate a grounding field? In the mountains of CO, during the winter time, there is very little opportunity to drive anything into the ground, much less dig for laying rods horizontally. So, in lieu of those, a practice that has been implemented is using a front-end loader's worth of sand/dirt used for mitigating icy road conditions, and dumping it on either frozen earth or pavement as a grounding field. Having tested this, I've gotten resistance as low as 35 ohms. That being said, if static flows to that pile of sand/dirt, is it possible to oversaturate it, to the point where it becomes ineffectual? Thanks for your time and consideration!

Reading seems very high. What is the standard for a passing value?

Hi! Thank you for the video, how do we find the standard deviation of the results after testing has completed using the Wenner method on the 6471? Thanks!

When do we use Sweep mode? We have transmission line and We have to learn TFR value of tower. Will we use auto mode or Sweep mode? Thanks

Saludos, tengo un AEMC 6240 que me da un mensaje en patalla de Prod CAL, como resuelvo este incoveniente. Su ayuda por favor

Tengo un registro de 3 días ( a un intervalo de un seg, con todos los parámetros por grabar) en un AEMC 8336. al parecer, por la cantidad de información que conforma dicho registro, no puedo descargar dicho registro (se queda mucho tiempo parado en 32%), con esto, pregunto: 1.- Es posible descargar el archivo por partes? ; 2.- Es posible descargarlo como registro con periodos de tiempo diferente? . Saque la memoria y la leí directamente, si me da oportunidad de bajarlo con intervalos diferentes, pero solo descarga el 32% del registro (sólo leo un día)...qué se puede hacer? de antemano gracias!!!

is the 5 % or less deviation between 50-70 the same standard for substations. surely, they are i would think anyways

I'm good with just going along for the ride. I get tired of being taught stuff, just want to enjoy it just like you do. Love the radio work, love the flight planning and tracking...love it all. Thanks.

could this be used for testing ground buses in panels and equipment disconnects?

Estou com problemas para descarregar dados do Power Pad 8335, não consigo baixar os dados no relatório.

What tips can you give to first time buyers of micro ohm meter? Our factory probably needs one but am not sure if the benefit will be significant enough to make an impact on reducing maintenance cost. Our factory makes use of spot welding machines and we have frequent downtime due to failure of welding cables resulting to weak welds

Tengo modelo 6416, sale Err. Cal. Se observa el testigo de pinza abierta, cuando no lo está. Quien me podría ayudar o que debería hacer

Will there be a third harmonics without a neutral?

Can you use this for a ground grid or only individual rods?

Can this be used to test a ground grid or only individual rods?

Does PI stay on the display of while testing

I really like earth grounding resistance meter. I have it on my wish list. Do you need a electrical salesman in Northern California. I love to market your product.

buena explicación, tengo una duda, porque en los manuales la distancia "A" debe ser mayor a 80 metros ?, no será un error y es 80´to 100`,gracias

I Have a problem with my megohmmetre C.A6555

👍👍

👍👍

A good video clearly explaining the functioning of a Rogowski Coil. Thank you for posting such valuable content !

I bet its Dr. Mishio Kaku who is the narrator

Thanks 🙏🙏🙏🙏🙏

Thanks 🙏🙏🙏🙏🙏

Thanks 🙏🙏🙏🙏🙏🙏

Very good. Thanks 🙏🙏🙏🙏

Apart for the equipment, you should also teach

This video is pretty good at explaining how to test grounding electrodes and electrode systems. It does however muddle the differences between BONDING and Grounding. The grounding electrode system has little to do with clearing a fault (protecting equipment from faults 2:48). Think about that for a moment, apply 120v to a 25 ohm rod (NEC suggested target) will the resulting current flow cause a breaker to trip? 120/25= 4.8a that is not going to cause a 20a or 15a breaker to trip. Even if we lower the resistance to 5 ohms which is a common engineering standard we would only cause a 26a breaker or fuse to open thus clearing a fault. In a commercial building where breakers are often rated at 100a -1000a that could not realistically be relied on to clear a fault. Fault current for tripping breakers is dependent on a low resistance path NOT to earth as suggested here but to the center tap of the transformer or transformer neutral terminal which is a function of BONDING. The NEC in article 250.4(A)(1) states that grounded electrical systems “shall be connected to earth in a manner that will limit the voltage imposed by lightning, line surges, or unintentional contact with higher-voltage lines and that will stabilize the voltage to earth during normal operation.” Simply stated a grounding electrode system at a service entrance is for power quality not clearing faults. That is not to say it is not an essential part of your electrical system and the rest of this video does a great job explaining how that works.

Thank you very much for very elaborateing explanation

Great info, how the unused drain wire should be terminated? Should it be cutted off back to jacket? Or can it be twisted around transition where multi conductor jacket was stripped?

A professor from Siemens Germany came over for a complicated malfunction of a machine control. He did not allow us to talk about earthing. After all, planes and ships have no earth either. Equipotential bonding was the right word.😁

You don't know a thing. ruclips.net/video/0sR-35blTGQ/видео.html

is it possible to measure on the transmission tower? if the Z electrode is placed 80 feet from the ground rod. Or can we use clamp on tester on transmission tower?thanks

Los datos no se pueden ver directamente en el instrumento sin necesidad del software?

This was a great presentation that helped me to make sense of the subject matter. Better detail than my instructor.

I'm from Indonesia for the aemc 6250 10A test kit there is an error 08, I want to ask where is the damage?

El software es opcional o es obligatorio

Sir what is use of uncertainty

Your explanation is too broad but non substantial for me, what we need is the actual testing at site not like people working construction on their desk or table only.

Perfect explanation it was very easy to understand. I wish my professors explained it this way. Thank you so much

I came here from music tutorials

Estos sirven para hacer estudios de calidad de energía acorde al Código de Red? Ya que se indica que deben ser equipos clases A pero estos AEMC son solo clases B. Dónde podría cotizar en México este tipo de analizadores ?

link de la parte 2

Thanks for the video. Very informative. 😇

1:56

Good. Thanks.

I have a problem at work i.e. many machines produce harmonic signals so that it interferes with the voltage in that area, I want to ask how to minimize harmonic signal interference so that the damaged voltage is not too severe. Thank you

Thanks

static discharge, a very important problem