[CC] How to Test Low Resistance with Hioki IR4057 (0.01 Ohm resolution)

In this video I put my Hioki IR4057 Insulation Resistance Instrument to task by measuring low resistance resistors. As you know, its main purpose was to test insulation resistance up to 4,000 Mega-Ohm. But it has a lesser known ability to measure low resistance with a resolution of 0.01Ω. It's not a dedicated, high precision, low resistance meter. But it may be useful in certain cases where high accuracy isn't essential. I appreciate your support by subscribing. Thanks for watching. Keep safe!
Link for IR4057-50 product page:
www.hioki.com/...

[@fatehyanvi270]

How to check IR Value 1phase and 3phase.

[@ramschannelreviews]

If you mean feeder or branch circuits, the basic principles are the same. The circuits should be completely de-energized and all loads disconnected before testing their insulation resistance. But there's a lot more than this. So if you wish to know more I suggest further reading, or better yet training for safety and proper implementation.

[@BPadventure]

very informative

[@ramschannelreviews]

Salamat sa suporta Sir BP😄

[@narayanaya5519]

First thanks for u then where it can be measured

[@ramschannelreviews]

Thanks for your comments. I think you were asking where low resistance testing can be used? I believe it can be important in testing for contact resistance, for example, of switches, connectors, breakers, & relays. High resistance in these devices may indicate oxidation and poor contact, which can lead to heat. It can also be used to check for conductivity of wiring conductors- the lower the resistance the better. I'm sure there are other applications for it.
While you can do these tasks using the Ohmmeter function of a general purpose digital multimeter, their Ohmmeter often cannot go below 1 Ohm. You cannot also calibrate their test leads to start at zero Ohms. So, if you want below 1Ω value, & you need to eliminate test leads' resistance, you need something else.
Although the IR4057 not a dedicated low resistance meter, it has a relatively good resolution (0.01Ω), 200mA testing current, & zero ohm adjuster (0.00Ω). So it can quickly test for low resistance (below 1Ω) when very high accuracy and precision aren't critical.

[@narayanaya5519]

Thank you so much I bought 4056-20 after ur review 4057 -20, iam ac technician but I regularly watching ur video. 💓

[@ramschannelreviews]

@@narayanaya5519 Thanks for watching my videos. I share what I can & I also learn from others. Congratulations on your new IR4056-20👍! It has a low resistance function also. It is made in Japan & I am sure it will serve you well as an AC technician & in your other electrical projects, too. Good luck!

[@narayanaya5519]

@@ramschannelreviews 🙏