The first action following an electrical shock must be to safely disconnect the power source to prevent further injury. When an electric current touches or flows through the body, this is known as an electric shock.
Read More
Since a light switch gets electrical currents by being connected to a box, if any of the box wires are loose, this could be causing the shock. There are many scenarios in which this can happen, most of which are preventable if proper safety measures are taken. An electric shock occurs when a person comes into contact with an electrical source, causing the current to pass through the body. Loose connections within the switch or junction box can also result in stray voltage.
Read More
Since plastic is an insulator, there is no risk of electric shock, and these appliances do not require an earth connection. For example, shocks from light switches may be mild, while contact with industrial power sources can cause severe effects. In the realm of Health, Safety, and Environment (HSE), understanding electric shock is crucial for preventing accidents and promoting Workplace Safety.
Read More
This guide represents a short overview of fundamentals of a power system protection, operating principles and relay characteristics as well as description of main switchgear components like various types of circuit breakers, CTs and PTs, relays etc. Operating Principles and Relay Construction: Electromagnetic relays, thermal relays, static relays, microprocessor based protective relays Time-current characteristics, current setting, over current protective schemes, directional relay, protection of parallel feeders, protection of ring mains. At the completion of this course, students will be able to test phase / ground time over current (51) and phase / ground instantaneous over current (50) protection elements on electromechanical and microprocessor feeder protection relays.
Read More
Use this Protection Relay Setting Calculator to calculate pickup current, time multiplier settings (TMS), operating time, coordination time interval (CTI), and plug setting multiplier (PSM) using fault current, CT ratio, and IEC 60255 curve parameters. Pick Up Current Definition: The current level at which the relay begins to operate, overcoming the controlling force. PSM and TMS settings that are Plug Setting Multiplier and Time Multiplier Setting are the settings of a relay used to specify its tripping limits. Proper relay settings provide fault detection, coordination, & system stability, which prevents equipment damage and reduces. The protective philosophy is fundamentally grounded on the understanding that faults or abnormal operating.
Read More+27 10 247 8396
Unit 7, Summit Place, 21 Summit Rd, Midrand, Johannesburg, 1685, South Africa