tag class
A measuring relay that, either solely or in combination with other relays, is a constituent of a protection equipment.
A document that describes methods of operating a piece of equipment or process unit, including but not limited to Instructions, procedures, drawings, tables, etc. for the operation -stop, start, and emergency shutdown. Including operational limits, function testing, possible interruptions, corrective actions, hazards and corrective measures to be taken.
A diagram which depicts an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between devices.
A physical object that can be any electrical device, usually incorporating an electromagnet, whereby a current or signal in one circuit can open or close another circuit.