A specified reduction in output power at elevated temperatures to improve reliability.
The reduction in a system's performance resulting from operating conditions other than nominally specified, including temperature, output load, or input voltage.
When an operating parameter is reduced in order to compensate for changes in other parameters, the process is referred to as derating. In the case of a power supply, derating may be achieved by reducing the power level when temperatures become elevated.
The fundamental limit of a power supply is how hot they can get. A 100 watt power supply can't run at 1000 watts just because something in it would get too hot. Therefore if you are running a power supply in a hot environment you will have to cut back its rated power to compensate for the fact that it can't get rid of its heat as efficiently. A derating curve or specification tells you what this tradeoff is.
A reduction of some operating parameter to compensate for a change in one or more other parameters. In power systems, the output power rating is generally reduced at elevated temperatures.
Reduction of a generating unit’s net dependable capacity to a point below the manufacturer’s nameplate rating.
Fuses are essentially temperature-sensitive devices. Even small variations from the controlled test conditions can greatly affect the predicted life of a fuse when it is loaded to its nominal value, usually expressed as 100% of rating. The fuse temperature generated by the current passing through the fuse increases or decreases with ambient temperature change.
The reduction of the amount of wattage used to prevent overheating. Related to ganging of dimmers.
Reducing the capacity of a control when side sections are removed.
The specified reduction in an operating parameter to improve reliability. Generally for a SMPS, it is the reduction in maximum available output power at temperature above the ambient, input voltages below the nominal, etc.
Use of materials or components in a design at less than their rated characteristics (such as power dissipation or current-carrying capacity) to enhance the long-term reliability of the end product. Part manufacturers usually specify a derating factor to be used when a part is to be operated above a certain temperature.
The specified reduction in an operating parameter to improve reliability. Generally for power supplies, it is the reduction in output power at elevated temperatures.
In 25 deg.C ambient temperatures, it is recommended that fuses operate at no more than 75% of the nominal current rating established using the controlled set of test conditions. Contact us for more information.
The reduction of the net dependable capacity of a generating unit below that initially set by the manufacturer.
A reduction in an operating point compared to specification to improve reliability.
The production of energy by a system or appliance at a level less than its design or nominal capacity.
Derating is the technique employed in power electrical and electronic devices wherein the devices are operated at less than their rated maximum power dissipation taking into consideration the case/body temperature, ambient temperature and the type of cooling mechanism used.