Insulation monitoring device
From Wikipedia, the free encyclopedia
(Redirected from Insulation Monitoring Device)
 |
This article does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2006) |
An insulation monitoring device monitors the ungrounded system between an active phase conductor and earth. It is intended to give an alert(light and sound) or disconnect the power supply when the impedance between the two conductors drops below a set value, usually 50 kΩ.The main advantage[citation needed] of the device that it allows uninterrupted power supply to important consumers such as medical, military and etc. Even if there is a failure(i.e phase touches ground) there are still no danger to the personnel.
It works by injecting low level ac or dc on the line and detecting.[citation needed]
[edit] External links
[edit] Additional reading
- Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures - Part 8: Insulation monitoring devices for IT systems
- The IT earthing system (unearthed neutral) in LV
 |
This electronics-related article is a stub. You can help Wikipedia by expanding it. |
