Brilliant video Martin. Had to laugh because since Christmas we have had trouble with our electrics tripping out the main RCD on our consumer unit every time it rained. After extensive testing by an electrician, he found that the central boiler had a low IR and that rain water was coming in through the flue and causing the electrics to become damp. Your video has explained it all. Can't thank you enough.
if that happens again turn off all your breakers then reset your rcd then one by turn back on your breakers it will show you which circuit breaker has a fault on it ok
Thank you Sir, you're the best. We were using this device at work on an aircraft testing some stuff.I came here looking for some second opinion type of explanation because I didn't understand it quite well but you sir gave me everything I needed about Insulation Testers. Now I'm gonna work with it with confidence.MegaLove from 🇿🇦.
I really enjoy watching your videos Martin , you seem to be able to get your tutorial across very calmly and very informatively , Thank you for taking the time to make these , they are a great help .
Great video! Thanks for making it. I'm an Electronics Tech who was thinking about buying a Megger tester. I was just wondering if you could clear something up. At 14:56 in, you said you'd like to see an additional mega-ohm for each additional 1000V put on the line. But your board says 1000 Ohms, which is a kilo-Ohm, not a mega-ohm. So for 2000 Volts, should I see 2 mega-ohms or 1001000 ohms? Or was it supposed to be 1000 Ohms for each additional VOLT you added above 1000 Volts (making it 2 mega-ohms for 2000 volt input)? Thanks for any additional info on this you can offer. All the best! Appreciate the help!
Hi Martin, I always use 5kV insulated silicone (rubber certified) gloves when handling my HV test gear, they are a bit thick, but I don't leave anything to chance... The mininium voltage I test on is 1.5kV and I go up to 3kV. This is for insulation testing on audio and power transformers. Cheers!
Never knew there was leakage in insulation.I just though it was shorted or not shorted.Good stuff.I work on Air Conditioners and always have circuit breakers tripping.I will use a good tool for resistance testing.
Damn this is pure GOLD. Really impressed by your teachings, thanks for sharing your knowledge! I'm probably going to be surfing your vids for some time in the future, can't wait!
I am also not wary happy about high voltage, I have some tricks I use, maybe you find them useful. When I have done as you demonstrates I do always put a single stranded wire from hot to neutral so if anyone turns on the power it will shorten before any power can reach me. If I can't do that, I do often run a long wire from hot to the nearest outlet with earth, again to prevent me getting a schock! Thanks for your fantastic video by the way:-)
at 22:28 you tested isolation between Line and Neutral of an appliance used to warm the water. I expect to see a SMALL resistance out of this test, since it is a heater, but you show 2.2 GOhm. Could you explain this discrepancy, please ?
How can you check insulation readings on the kettle, if you measure between live and neutral you should get a very low resistance reading and not a high or infinity reading because you are passing current through the heating element? In the case of light fixtures etc, you would remove the lamp/bulb but for appliances such as kettles, driers, etc, how do you check unless you disconnect the heating elements?
You have to flick the switch on the kettle to pass through the heating element, as long as the kettles switch is up you're not passing through the heating element.
great video, good information. here in the UK us electricians are not allowed to use a non contact volt probe or a multi-meter to test if the installation is isolated. we have to use a voltage indicator the is approved to GS38, then we have to prove the indicator with a known source or a proving unit. i personally like my fluke T150, but a lot of the other guys i know like to use the martindale test lamps.
+mjlorton hi I asked a question yesterday and have been trying to find answers on the net to it but no luck ..would you mind giving me some advice on my query please
On earth testing you should put 10 Amps thru, which will burn out (blow) a flimsy conductor. I've seen earth terminals to equipment body with just 2 of the 18 strand copper cable in actual contact. Good video thanks.
Bài Hát: Phôi Pha Ca Sĩ: Khánh Ly Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa ... Ca Sĩ: Khánh Ly Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa ... Ca Sĩ: Khánh Ly Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa Ôm lòng đêm Nhìn vầng trăng mới về Nhớ chân giang hồ Ôi phù du Từng tuổi xuân đã già Một ngày kia đến bờ Đời người như gió qua Không còn ai Đường về ôi quá dài Những đêm xa người Chén rượu cay Một đời tôi uống hoài Trả lại từng tin vui Cho nhân gian chờ đợi Về ngồi trong những ngày Nhìn từng hôm nắng ngời Nhìn từng khi mưa bay Có những ai xa đời quay về lại Về lại nơi cuối trời Làm mây trôi Thôi về đi Đường trần đâu có gì Tóc xanh mấy mùa Có nhiều khi Từ vườn khuya bước về Bàn chân ai rất nhẹ Tựa hồn những năm xưa ...nj6
Insulation resistance test or pat test is carried out at 250 volts Insulation resistance test on ring final circuit or lighting circuit is carried out at 500 valts With all loads removed from circuit and all switches in the on pasiton, portable appliances are unplugged when pat tested
The resolution of the 1587 is only 100Kohm (0.1Mohm). Would it not be smarter to check that the earth pin on the plug is connected to the metal body of the kettle with a regular multimeter? Then you know for sure that you have a low impedance connection and not 50Kohm or something like that.
5 лет назад
Just in the final part of the video you mention about grounding the conductor to make sure it's discharged and to not upset the readings. Does you do that before or after the insulation resistance testing ? What I usually do, it's to touch the cable ends with a piece of insulated wire to discharge them.
at 13:50 you say some meters stop reading and 1000 or 2000 ohm or 2 mega ohm. 2 mega ohm is 2,000,000 not 2000 yes? Unless you meant they stop reading at 1000K or 2000K ohms as 2000K would be 2M.
thank you very much, your videos have always been helpful. that's a fluke 1587 you are showcasing? I am bout to buy one. I was wondering what is the difference between 1587 and 1507?
So Wire check here is for safety--the process is to start with a known specification--for example and outlet of ___. when you seem to get light blinking or electrical faults the electricity is usually like the connection arc....the light flickers....so you start to check sometimes the appliance is what you think...often wiring has a duration of life before it disintegrates like powder..for most of us it isn't a problem---most of the world is like India-New York etc..where people buy and sell propertiess with out concern.....So their is always a factor when buying property that you check the system---the have a light plug you plug into the socket and it tells you if the circuit is safe..there are many EASY testers for the common person at the local store to test a outlets in your house for variable reasons and inexpensive to have ( for the common person)....So having said that.....the measurement is constant based on the fuse again....even with a variable--thats why A lot of car items have fuses in line...NOW SOME HOUSE OUTLETS HAVE fuses built in THE RED little button you push it and it resets your outlet box.......in case you over load etc...same for little tiny fuses in cars.....SO having said that I was wondering how the electrical V became more if their were only house fuse box? I sort of lost my place sorry...I don't mean to laugh ...I'm trying to understand thats all....I like all your electrical measurments and gauges and so thank you ......resistance has an ARC ? I thought you could solve it by specifications of the fuse box for current rateing? im not sure...thanks again...
When I measure ohm by fluke, it starts with a big number then goes down to a number. Why it does that? (e.g starts with 315.7 ohm then decrement down to 150 ohm)
Hi great video. 1 question please. So do you actually go around the plant, factory, house or building, and disconnect all the equipment like pc's, toasters, bulbs, burglar alarms, etc. surely you will miss something, and then run the risk of blowing up something. pls could u explain
I am a biomed engineer I do a lot of electrical safety on medical devices adhering to iec 62353 these videos are great very helpful. Any good books you can recommend?
Be careful with the testing pens, some do not read DC voltage or neutral screened cables like VSD Control Cable. The voltage may also only test between 90V AC to 1000V AC anything out side the range the device may not read. The platic bulb screwdriver testers can also blow there bulbs and they are also made cheap which can compremise your test. Good video though keep it up :)
Great video very educational my college tutor shocked me deliberately with a megger insulation test but I didn't harm me so just wondering is it therfore safe to be shocked by the megger meter or is it the potential risk of being shocked by the circuit you are working on when you say about the dangers? Thanks
On a related topic, good quality industrial multimeters have a nanosiemens conductance testing range, but nowhere on youtube have I seen any demonstration of the usage of this feature. Could you do a video demonstrating the use of multimeter conductance measurement? It seems somewhat similar to megger testing, but with much lower applied voltages. Also I am going to buy the UNI-T UT-171B (not to be confused with the UT-71B, which is crap), which is a 60000 count meter with data logging, conductance measurement and other premium features for under 300 USD. In spite of the fact that this is a bargain, I can't find any youtube reviews on it. Do you have any familiarity with this meter (If memory serves me, I think you have a UT-181, but that one is a bit out of my price range!).
I'm just 15 minutes in and I heard you on two separate occasions call 1M (mega ohm) a "thousand ohms" 1 mega ohm is 1 million ohms. 1 kilo ohm is 1,000 ohms, or am I missing something here completely?
In the UK insulation resistance should not be less than 1m Ohm as the minimum anything between 1 m and 2 m needs therther in festigation, 3 m and higher is acceptable ptible
It appears he wrote it down incorrectly based on what he is saying. What you have mentioned is spot on and I was thinking the same thing, I’m glad you brought it up
if they were connected your resistance would be dam LOW and pointless doing the test.. The Test is to find out if there is any shorts or Leakage between two cores.. so Joining the cables at the end would be pointless.. and why is it NAKED if you are PAT Testing.. even Wire Testing they should be in some thing even a Connection block .. not just hanging there
Aha, I got a Kyoritsu Insulation-Continuity Tester 3005A from ship yard. Btw, there is always a standard double insulation logo Square within Square, on soldering iron, hot glue gun and meters.
![LINE ATTACK VRV 206 A [REPARO NO PRE]](http://i.ytimg.com/vi/YNWYZZK2Ouw/mqdefault.jpg)
Probably the best explanation on RUclips. Very pedagogical.
Thank you very much Professor. Your lessons are simply perfect. If I was in UK I'd surely support all of your sponsors.
This video has open my eyes in terms of the Energy Audit services my company offers. Thank you for your help.
It's one in a million video! Very educative and an up to date information everyone in the electrical field can appreciate. Thumbs up!
Brilliant video Martin. Had to laugh because since Christmas we have had trouble with our electrics tripping out the main RCD on our consumer unit every time it rained. After extensive testing by an electrician, he found that the central boiler had a low IR and that rain water was coming in through the flue and causing the electrics to become damp. Your video has explained it all. Can't thank you enough.
if that happens again turn off all your breakers then reset your rcd then one by turn back on your breakers it will show you which circuit breaker has a fault on it ok
I'm hoping the electrician cured the fault - so far so good. If it happens again I'll certainly try this. Thanks.
Thank you Sir, you're the best. We were using this device at work on an aircraft testing some stuff.I came here looking for some second opinion type of explanation because I didn't understand it quite well but you sir gave me everything I needed about Insulation Testers. Now I'm gonna work with it with confidence.MegaLove from 🇿🇦.
I really enjoy watching your videos Martin , you seem to be able to get your tutorial across very calmly and very informatively , Thank you for taking the time to make these , they are a great help .
My pleasure, thanks for the feedback.
Great video! Thanks for making it. I'm an Electronics Tech who was thinking about buying a Megger tester. I was just wondering if you could clear something up. At 14:56 in, you said you'd like to see an additional mega-ohm for each additional 1000V put on the line. But your board says 1000 Ohms, which is a kilo-Ohm, not a mega-ohm. So for 2000 Volts, should I see 2 mega-ohms or 1001000 ohms? Or was it supposed to be 1000 Ohms for each additional VOLT you added above 1000 Volts (making it 2 mega-ohms for 2000 volt input)? Thanks for any additional info on this you can offer. All the best! Appreciate the help!
exemplary tutorial. clear and concise. the analogy to water pressure serves the purpose of the tutorial very well.
***** My pleasure Mark. Thanks for the feedback.
Regarding from video 20:10, To connect + and - together. In case I select a range to 500V, if my result is >550 M ohm. What should I do?
Fantanstic tutorial. Logical, thorough and clear. Thanks!
WOW WOW WOW. THIS VIDEO IS AMAZING, I LEARNED SO MUCH. GREAT VIDEO, PLEASE MAKE JUST LIKE THESE!!
Hi Martin, I always use 5kV insulated silicone (rubber certified) gloves when handling my HV test gear, they are a bit thick, but I don't leave anything to chance... The mininium voltage I test on is 1.5kV and I go up to 3kV. This is for insulation testing on audio and power transformers. Cheers!
Thanks for the post!
Very very informative video, thanks alot for posting this. Keep posting videos like this in future.
Never knew there was leakage in insulation.I just though it was shorted or not shorted.Good stuff.I work on Air Conditioners and always have circuit breakers tripping.I will use a good tool for resistance testing.
Damn this is pure GOLD. Really impressed by your teachings, thanks for sharing your knowledge! I'm probably going to be surfing your vids for some time in the future, can't wait!
You are awesome! Thanks for the tutorial. Better than my test and tag teacher years ago!👍👍👍cheers from Australia
Hello! Very helpful video! Thanka a lot. Just a notice:
At video 15.10 you mention 1000 Ω as 1 ΜΩ. Isn't it 1 kΩ?
1 megOhm = 1000000 ohm's
eh... 1mΩ = 0.001 Ω, 1MΩ = 1.000.000 Ω, and yes, he wrote it wrong, i think he means 1M not 1k
Good Video, as usual. Very useful tester for sure.
Great video. I had no idea about the safety precautions you should take with these types of testing meters. Thanks for the safety tips.
I am also not wary happy about high voltage, I have some tricks I use, maybe you find them useful.
When I have done as you demonstrates I do always put a single stranded wire from hot to neutral so if anyone turns on the power it will shorten before any power can reach me.
If I can't do that, I do often run a long wire from hot to the nearest outlet with earth, again to prevent me getting a schock!
Thanks for your fantastic video by the way:-)
Thank you, excellent video, information that's vital to your health.
20:30 What's the insulation resistance of a pair of rubber gloves? (excluding the rather expensive high voltage protection gloves)
At 1000 volts an insulation resistance tester will show 1. Ive tested rubber gloves. I don't know why but I did.
Fantastic video there mate. Very clear, well spoken...
Thank you for your time.
encomium23 My pleasure.
Great explanation for educating elecrics
at 22:28 you tested isolation between Line and Neutral of an appliance used to warm the water. I expect to see a SMALL resistance out of this test, since it is a heater, but you show 2.2 GOhm.
Could you explain this discrepancy, please ?
Donato Greco i think the heater is thermostat is open on in off position. Meaning the switch is not colsed the heater is off.
Because it's not switched on, I think. switched on there would be almost no resistance.
Greco,..from the start of these video he is using 1587 insulation multimeter also known as MEGGER TESTER, insulation means,.. Cover of conductor
How can you check insulation readings on the kettle, if you measure between live and neutral you should get a very low resistance reading and not a high or infinity reading because you are passing current through the heating element? In the case of light fixtures etc, you would remove the lamp/bulb but for appliances such as kettles, driers, etc, how do you check unless you disconnect the heating elements?
You have to flick the switch on the kettle to pass through the heating element, as long as the kettles switch is up you're not passing through the heating element.
Always FANTASTIC tutorials!!!!
Great tutorial. Especially, appreciate the safety perspective.
good way of tutorial to educate the public.
Great find, I just subscribed. Thank you so much very informative. Love the explanations with the visual and demonstrations.
Amazing explanation. Thanks a lot for this.
wonderful tutorial . very informative and explicit and easy to follow
great video, good information. here in the UK us electricians are not allowed to use a non contact volt probe or a multi-meter to test if the installation is isolated.
we have to use a voltage indicator the is approved to GS38, then we have to prove the indicator with a known source or a proving unit. i personally like my fluke T150, but a lot of the other guys i know like to use the martindale test lamps.
viperfrank Thanks for your post.
I think you are alowed to use a NEON Screwdriver, but its in small print and not suggest... i had to redo my test because o that
+mjlorton hi I asked a question yesterday and have been trying to find answers on the net to it but no luck ..would you mind giving me some advice on my query please
Dickie Licky zszewqs1aaaaaassss1xxxx-
Excellent Vidio, well done and clear. Thanks Paul South Africa
paul schumann My pleasure Paul.
Very good teaching much appreciated. Thanks
On earth testing you should put 10 Amps thru, which will burn out (blow) a flimsy conductor. I've seen earth terminals to equipment body with just 2 of the 18 strand copper cable in actual contact. Good video thanks.
What a very nice tutorial video 2 thumbs up martin.
Bài Hát: Phôi Pha
Ca Sĩ: Khánh Ly
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
... Ca Sĩ: Khánh Ly
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
... Ca Sĩ: Khánh Ly
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
Ôm lòng đêm
Nhìn vầng trăng mới về
Nhớ chân giang hồ
Ôi phù du
Từng tuổi xuân đã già
Một ngày kia đến bờ
Đời người như gió qua
Không còn ai
Đường về ôi quá dài
Những đêm xa người
Chén rượu cay
Một đời tôi uống hoài
Trả lại từng tin vui
Cho nhân gian chờ đợi
Về ngồi trong những ngày
Nhìn từng hôm nắng ngời
Nhìn từng khi mưa bay
Có những ai xa đời quay về lại
Về lại nơi cuối trời
Làm mây trôi
Thôi về đi
Đường trần đâu có gì
Tóc xanh mấy mùa
Có nhiều khi
Từ vườn khuya bước về
Bàn chân ai rất nhẹ
Tựa hồn những năm xưa
...nj6
Awesome video. Thanks for doing this, Martin!
My pleasure Robert, thanks for watching. Cheers, Martin.
Thank you very much sir....expect more videos from you
Thanks. Very helpful and easy to understand.
Orville Edward My pleasure, thanks for the feedback.
A crystal clear explained
Insulation resistance test or pat test is carried out at 250 volts
Insulation resistance test on ring final circuit or lighting circuit is carried out at 500 valts
With all loads removed from circuit and all switches in the on pasiton, portable appliances are unplugged when pat tested
Thanks for the very informative video!
Good video with nice analogy.
At minute 14:50 1000ohm = 1Kohm not one Mohm.
Great job again like always
Excellent video! Really helpful!
My pleasure!
Hi John! Im just revising this nice vid!
Great video, concise, informative and well presented. Have you reviewed any handheld oscilloscopes?
The resolution of the 1587 is only 100Kohm (0.1Mohm). Would it not be smarter to check that the earth pin on the plug is connected to the metal body of the kettle with a regular multimeter? Then you know for sure that you have a low impedance connection and not 50Kohm or something like that.
Just in the final part of the video you mention about grounding the conductor to make sure it's discharged and to not upset the readings. Does you do that before or after the insulation resistance testing ? What I usually do, it's to touch the cable ends with a piece of insulated wire to discharge them.
at 13:50 you say some meters stop reading and 1000 or 2000 ohm or 2 mega ohm.
2 mega ohm is 2,000,000 not 2000 yes? Unless you meant they stop reading at 1000K or 2000K ohms as 2000K would be 2M.
Very interesting! Great video! Thanks Martin.
Hi thank you , can you show how to see if your boiler is faulty or what part is not working right.
I love you. Thank you for your help.
On US equipment, you will most often see "HI POT" stamped on products (high potential tested).
Thanks for the post, that term is new to me. Cheers, Martin.
What about power tools with electronic speed/torque controls? Wouldn't higher voltage destroy components?
Great explanation. Thanks
My pleasure, thanks for the post.
What happens when doing insulation resistance test on a stove and oven heating element. Do you have to disconnect the power cord from the appliance
Thank u very much for the video it's really helpful
Do you have a video explaining how to test for Double Insulated appliances? Thank you
thank you very much, your videos have always been helpful. that's a fluke 1587 you are showcasing? I am bout to buy one. I was wondering what is the difference between 1587 and 1507?
Is there an example which shows testing a wire with faulty insulation such as one damaged by a surge?
very nice explanation,,,thank you very much for this video tutorial.
jose deejay Batalla My pleasure, thanks for the post.
superbly well explained
So Wire check here is for safety--the process is to start with a known specification--for example and outlet of ___. when you seem to get light blinking or electrical faults the electricity is usually like the connection arc....the light flickers....so you start to check sometimes the appliance is what you think...often wiring has a duration of life before it disintegrates like powder..for most of us it isn't a problem---most of the world is like India-New York etc..where people buy and sell propertiess with out concern.....So their is always a factor when buying property that you check the system---the have a light plug you plug into the socket and it tells you if the circuit is safe..there are many EASY testers for the common person at the local store to test a outlets in your house for variable reasons and inexpensive to have ( for the common person)....So having said that.....the measurement is constant based on the fuse again....even with a variable--thats why A lot of car items have fuses in line...NOW SOME HOUSE OUTLETS HAVE fuses built in THE RED little button you push it and it resets your outlet box.......in case you over load etc...same for little tiny fuses in cars.....SO having said that I was wondering how the electrical V became more if their were only house fuse box? I sort of lost my place sorry...I don't mean to laugh ...I'm trying to understand thats all....I like all your electrical measurments and gauges and so thank you ......resistance has an ARC ? I thought you could solve it by specifications of the fuse box for current rateing? im not sure...thanks again...
When I measure ohm by fluke, it starts with a big number then goes down to a number. Why it does that? (e.g starts with 315.7 ohm then decrement down to 150 ohm)
Excellent video , thank you so much.
that was a very nice teaching
Hi great video. 1 question please. So do you actually go around the plant, factory, house or building, and disconnect all the equipment like pc's, toasters, bulbs, burglar alarms, etc. surely you will miss something, and then run the risk of blowing up something. pls could u explain
@14:50 "1000 ohms" is a kilo-ohm, not a mega ohm.
Yes, confusing, 1 Meg is 1 million!
Why have more people watching this not realised this? This is obviously a more electrically minded channel and audience.
Fracture,Richard and fire,.your brain cells are FRACTURED,. he is not explaining about the meaning of 1000 ohms and megohms,
great explanation but i slept in the middle by the way you explained... thanks
very nice video..we can learn something from it..
thank you sir for your good teaching...
Thank you very much, I benefited a lot from you.
May i ask, is Insulation Resistance testing necessary for 12V equipment?
Thank you, now I have a new perspective...
Thank you for good explanation ,great ;)
can you make a video about Hi pot testing a DUT device under test and why DUT has AC and DC leakage current when disconnecting the earth ground wire?
I am a biomed engineer I do a lot of electrical safety on medical devices adhering to iec 62353 these videos are great very helpful. Any good books you can recommend?
VERY EDUCATIVE. THANK YOU. REGARDS
can we test Ac motor disassembled, I mean the rotor and stator are separated, test only the stator
thanks
Thank u very useful for this video.
Be careful with the testing pens, some do not read DC voltage or neutral screened cables like VSD Control Cable. The voltage may also only test between 90V AC to 1000V AC anything out side the range the device may not read. The platic bulb screwdriver testers can also blow there bulbs and they are also made cheap which can compremise your test. Good video though keep it up :)
PAT stands for Portable appliance Testing. So need to write PAT testing. Write only PAT.
I shocked myself with a Megger once. It was kinda funny.
Great video very educational my college tutor shocked me deliberately with a megger insulation test but I didn't harm me so just wondering is it therfore safe to be shocked by the megger meter or is it the potential risk of being shocked by the circuit you are working on when you say about the dangers? Thanks
On a related topic, good quality industrial multimeters have a nanosiemens conductance testing range, but nowhere on youtube have I seen any demonstration of the usage of this feature. Could you do a video demonstrating the use of multimeter conductance measurement? It seems somewhat similar to megger testing, but with much lower applied voltages.
Also I am going to buy the UNI-T UT-171B (not to be confused with the UT-71B, which is crap), which is a 60000 count meter with data logging, conductance measurement and other premium features for under 300 USD. In spite of the fact that this is a bargain, I can't find any youtube reviews on it. Do you have any familiarity with this meter (If memory serves me, I think you have a UT-181, but that one is a bit out of my price range!).
GREAT TEACHER INDEED. THANK YOU. REGARDS.
I've seen this done in industry, wondered why, but never asked. Now I know. Thanks.
BRILLIANT..!!! Thanks for sharing your knowledge
Pablo Serna Thanks for the feedback.
The more I watch Ur material the more confident I feel .!! U really inspire me.. Well done
Thank you so much for this video. it's very very useful...
hi what reading would indicate a open circuit? and what reading will indicate a short circuit?
I'm just 15 minutes in and I heard you on two separate occasions call 1M (mega ohm) a "thousand ohms" 1 mega ohm is 1 million ohms. 1 kilo ohm is 1,000 ohms, or am I missing something here completely?
In the UK insulation resistance should not be less than 1m Ohm as the minimum anything between 1 m and 2 m needs therther in festigation, 3 m and higher is acceptable ptible
It appears he wrote it down incorrectly based on what he is saying. What you have mentioned is spot on and I was thinking the same thing, I’m glad you brought it up
great info and the coffee pot is the most important tool. B*) .
Great explanation
when measuring the insulation resistance of three core royal cable..should the other end of the wire be separated with each other?
if they were connected your resistance would be dam LOW and pointless doing the test..
The Test is to find out if there is any shorts or Leakage between two cores.. so Joining the cables at the end would be pointless.. and why is it NAKED if you are PAT Testing.. even Wire Testing they should be in some thing even a Connection block .. not just hanging there
wonderful my friend great job
Aha, I got a Kyoritsu Insulation-Continuity Tester 3005A from ship yard. Btw, there is always a standard double insulation logo Square within Square, on soldering iron, hot glue gun and meters.