Practices to have on your mind…
In addition to the safety precautions (access to HV enclosures and work on HV electrical equipment) the following general safety practices should be ALWAYS observed for work on electrical equipment.
1. Check before Act
The scope of work and relevant circuit should be checked before starting any electrical work. Suitable lighting and adequate illumination should be provided for the workplace.
The condition of tools and instruments should also be checked before carrying out electrical work.
2. Isolate and Lockout
The circuit / equipment under maintenance should be isolated as far as practicable. The relevant isolator should be locked out. A suitable warning notice should be placed close to the isolator.
3. De-energize
The circuit/equipment to be worked on should be checked to ensure that it is dead.
4. Others Practices
- The workplace should be kept clean and tidy.
- Keep hands away from any circuit or equipment that are not working on (VERY IMPORTANT)
- Unauthorized people should not stay in the work place.
- The requirements stated in procedures and check lists should be followed.
How Do You Know? Workplace Electrical Safety (VIDEO)
Lockout Tagout (VIDEO)
Reference: Code of practices for the electricity (wiring) regulations – Electrical and Mechanical Services Department
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Edvard Csanyi
Hi, I'm an electrical engineer, programmer and founder of EEP - Electrical Engineering Portal. I worked twelve years at Schneider Electric in the position of technical support for low- and medium-voltage projects and the design of busbar trunking systems.I'm highly specialized in the design of LV/MV switchgear and low-voltage, high-power busbar trunking (<6300A) in substations, commercial buildings and industry facilities. I'm also a professional in AutoCAD programming.
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Respective sir,
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Guwahati,Assam (India)
Thanks for all
It is really very useful requiremens to energize any HV / LV panels.
A further interesting measure is to check if the voltage transformers secondary circuts are open and isolated and the current transformers secondary circuits are shortcircuited.
When checking terminal blocks always use a high voltage insulation glove. Even if you know the schematics very well.
Thanks for the article
It’s not important but you’ve missed number 2 and there are two 3.
and is that possible to upload videos in another site? Youtube is not accessible to me. thanks again
Thanks for noticing, typo is fixed! All videos you can find at EEP are embedded from Youtube. There is no way to watch videos than from its source.
By the way, what do you mean by ‘Youtube is not accessible to me’?