14 Years Factory XJM7-W Measuring Box (Outdoor Energy Measuring Box) to United States Importers


Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

Related video

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XJM7-K measuring cabinet (outdoor street lamp measurement control box) is suitable in power supply line with AC 50HZ, rated insulation voltage 660V, rated voltage 380/220v, as energy measurement equipment of residential quarters, villas energy measurement etc.

In line with GB7251.1-1997 and GB7251.3-1997 standards.

3C certificate:


What is Triac, how it work in fan inductive motor load speed control is explained in Hindi video tutorial. How to use DIAC for triggering is explained in lecture. Four quadrant triggering operations, application for inductor and resistor load current, data, di/dt protection is explained. Triac voltage and current wave shapes during operation, zero crossing triggering are explained in this tutorial on power electronics. Educational video Tutorials on power electronics 53 by G K Agrawal

Lecture is given by person with industrial experience and useful for electrical, electronic communication and power electronics engineering students.

Also watch https://www.youtube.com/watch?v=bkFVBNFj1kQ
Also watch https://www.youtube.com/watch?v=mU7maBiWK-8
Also watch https://www.youtube.com/watch?v=6ZRCgGi61Sg

Triac what is Traic, how it work in AC dimmer, for fan inductive motor load speed control are explained in Hindi video.

Part 1 – Spark 0:00
Part 2 – The Age of Invention 58:30
Part 3 – Revelations and Revolutions 1:56:50


In this three-part BBC Horizon documentary physicist and science communicator Jim Al-Khalili takes the viewer on a journey exploring the most important historical developments in electricity and magnetism. This documentary discusses how the physics (and the people behind the physics) changed the world forever.


BBC Horizon 2011

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