What is Magnetic Induction?
Each wire conducts an electric current creating a changing magnetic field around it.
This field transfers to an adjacent & separated line generating an induced electrical voltage even after the line is detached from the source.
This voltage is very risky to the safety of maintenance personnel and may result in shocks (or) sparks if not discharged correctly.
Disconnecting the lines safely requires following certain protocols.
• Use the test stick to ensure that no effort is applied to the split line.
• Discharge the magnetic-induced charge line.
• Temporary grounding (ground + short) prior to entering the work area.
• Adding another temporary grounding point after the work area.
Why are we connecting grounding before and after the work area?
• Avoid accidentally returning the feeder.
• Protects against the functioning of the disconnected line as a result of the station controllers mistake (or) forgetfulness.
• Complete discharge of the induced voltage.
• Ensures that all voltage generated across the separated line & on both sides is discharged.
• Secure the whole work area.
• Protects technicians from electricity from nearby transformers, homes or generators.
• Back-up protection line.
If one of the groundings fails for whatever reason the other grounding guarantees that the line is properly protected.
Technicians laboring to maintain the electrical network.
• Your safety comes first and nothing else is more important.
• Always be cautious.
You can also follow us on AutomationForum.co, Facebook and Linkedin to receive daily Instrumentation updates.
You can also follow us on ForumElectrical.com , Facebook and Linkedin to receive daily Electrical updates.