Heliocentris Energy Manager 2.0, Instruction Manual

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Appendix
11.3 Glossary
Bezeichnung Erklärung
Ammeter A device that measures current flowing in a circuit.
Ampere (amp) The unit of electric current, having the symbol A.
Circuit, electrical Any closed path followed or capable of being
followed by an electrical current.
Efficiency A measure of the energy-effectiveness of a system
with unity or 1 being a perfect result. Efficiencies are
usually expressed as percentages where the output is
divided by the input.
HTTP HTTP is a client-server communication protocol
developed for the World Wide Web. A web browser
may be the client and an application running on a
computer hosting a web site may be the server.
Input The amount of whatever is being measured entering
a system.
Milliampere One thousandth of an ampere, having the symbol
mA.
Output The amount of whatever is being measured leaving
a system.
Power, electrical The power (in watts) generated or used by a device
can be calculated by multiplying its current (in
amperes) times the voltage across its terminals (in
volts). Often designated by the symbol P.
Short circuit A situation in which a circuit is complete but has
little or no resistance or load.
Solar cell A device that changes light into an electric current.
Solar cells are usually mounted together to produce
a solar panel.
Volt The unit of electric potential difference, having the
symbol V.
Voltage A measure of the electrical potential between two
points, usually measured in volts and designated by
the symbol V.
Voltmeter A device that measures voltage difference between
two points in a circuit.
Watt The unit of electric power, having the symbol W.
Table 11-2 Glossary
98 Energy Manager 2.0 - Instruction Manual