Contents
What makes a load inductive?
Reactive/Inductive Load – An inductive load converts current into a magnetic field. Inductive reactance resists the change to current, causing the circuit current to lag voltage. Examples of devices producing reactive/inductive loads include motors, transformers and chokes.
What is an example of a load in electricity?
An electrical load is simply any component of a circuit that consumes power or energy. In a household setting, the most obvious examples of electrical loads include light bulbs and appliances.
What is inductive load bank?
An inductive load bank is normally used in conjunction with a resistive unit to provide a lagging power factor load test. This provides the capability to test the generator set fully at 100% nameplate kVA rating. Inductive load banks are rated in kilovolt-amperes reactive (kVAr).
When to add protection to an inductive load?
relays commonly drive inductive loads that include motor windings, solenoids, interposing relay coils, physical inductors, and even the load wiring itself. In all cases, we routinely recommend that protection be placed local to the inductive load being switched.
What is application note 8501-088 for switching inductive loads?
Application Note 8501-088: Adding Protection When Switching Inductive Loads Acromag manufactures products that are often used to switch inductive loads.
Are there simultaneous DPDT switches for inductive loads?
The inductor voltage spikes very quickly and gap time must be very fast or nearly 0. The reality is that inductive loads are not usually switched via simultaneous DPDT switches as shown in Figure 3A, but instead with SPST switches similar to Figure 3B.
How is the current path broken in an inductive load?
The current through the inductive load at the instant the current path is broken is normally equal to the current before the path was broken (io) decaying exponentially with time according to i(t) = io * e-t*R/L(t=time since current turned off, L=inductance, R=series resistance of circuit).