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A resistive load bank impacts upon all aspects of a generating system. An operator controlling a resistive 200kW load bank being used to test a diesel generator. The load of a resistive load bank is created by the conversion of electrical energy to heat via high-power resistors such as grid resistors.
Load affects the performance of circuits with respect to output voltages or currents, such as in sensors, voltage sources, and amplifiers. Mains power outlets provide an easy example: they supply power at constant voltage, with electrical appliances connected to the power circuit collectively making up the load.
Even in the worst-case unbalanced (linear) load, the neutral current will not exceed the highest of the phase currents. Non-linear loads (e.g. the switch-mode power supplies widely used) may require an oversized neutral bus and neutral conductor in the upstream distribution panel to handle harmonics. Harmonics can cause neutral conductor ...
Despite their name, linear regulators are non-linear circuits because they contain non-linear components (such as Zener diodes, as shown below in the simple shunt regulator) and because the output voltage is ideally constant (and a circuit with a constant output that does not depend on its input is a non-linear circuit). [2]
This is known as "mixed signal processing", and allows a designer to incorporate more functions into a single chip. Some of the benefits of this mixed technology include load protection, reduced parts count, and higher reliability. [1] Purely analog chips in information processing have been mostly replaced with digital chips.
The load resistance can often be varied rapidly in order to test the power supply's transient response. Just like a resistor, an active load converts the power supply's electrical energy to heat. The heat-dissipating devices (usually transistors ) in an active load therefore have to be designed to withstand the resulting temperature rise, and ...
If the neutral is smaller than the phase conductors, it can be overloaded if a large unbalanced load occurs. The current drawn by non-linear loads, such as fluorescent & HID lighting and electronic equipment containing switching power supplies, often contains harmonics. Triplen harmonic currents (odd multiples of the third harmonic) are ...
Loss of load in an electrical grid is a term used to describe the situation when the available generation capacity is less than the system load. [1] Multiple probabilistic reliability indices for the generation systems are using loss of load in their definitions, with the more popular [2] being Loss of Load Probability (LOLP) that characterizes a probability of a loss of load occurring within ...