VR has various meanings in the The Finance and Administrative Services category. Discover the full forms, definitions, and usage contexts of VR in The Finance and Administrative Services.
A relay that turns on when a certain voltage in an AC circuit is reached. There are two basic ways that voltage relays work: detecting too much voltage and too little voltage. Voltage relays are used to find sudden jumps in voltage caused by a broken generator or low voltages caused by power outages or short circuits, among other things. It can also happen when any power tool is being charged.
The Finance and Administrative ServicesA circuit which is connected between the power source and a load, which provides a constant voltage despite variations in input voltage or output load. Voltage regulators control the output voltage, eliminating voltage sags and swells in the input voltage that last from 15 milliseconds to one-half second. They are typically relatively inexpensive feedback controlled transformers and the more expensive ferroresonant transformer.
The Finance and Administrative ServicesA material that retards the movement of water vapor through a building element and prevents insulation and structural wood from becoming damp and metals from corroding. Often applied to insulation batts or separately in the form of treated papers, plastic sheets, and metallic foils.
The Finance and Administrative ServicesLast updated: