When you work with electric machines and equipment, one of the most effective ways to prevent accidental re-energizing is to cut these machines off from their power source. Simply unplugging them from their sockets during maintenance and repair will not be enough, as anyone can pass by and plug them back in.
Thus, plug and socket lockout devices can ensure that machines will not be plugged back in while maintenance and repairs are ongoing. Plug lockout devices encase plugs and are locked with LOTO locks, thus making it physically impossible for anyone to plug a machine back in until the lockout is removed. Socket lockouts, meanwhile, go over electrical sockets and can prevent the machines in an entire area from being plugged back in.
These lockout devices are essential to electrical lockout tagout procedures. They are simple and easy to install but will be very difficult to remove by unauthorized personnel. Because they’re made of durable and impact-resistant material, they won’t twist, bend, or break without extraordinary force.
When electrical machines or equipment in a facility are undergoing maintenance or repairs, it’s important to ensure that they will not be accidentally re-energized. Electrical lockout tagout thus refers to procedures that prevent unauthorized access to sources of electrical energy. These procedures help protect employees from injury or death.
Pin-and-sleeve devices are often used to seal power connections in heavy-duty industrial applications due to their durability and consistency. Using these devices, power delivery can be protected from moisture, dirt, filth, and chemicals which are common in industrial workplaces.
There are five main types of pin and sleeve devices, namely: plugs, connectors, inlets, receptacles, and mechanically interlocked receptacles. Among these five types, mechanically interlocked receptacle is the least commonly used pin-and-sleeve device.