![]() ![]() For three-phase motor circuits it is unlikely that the neutral of the supply would be distributed.Ĭontrol circuits, the field wiring that goes out to limit switches and other sensing devices will most likely operate at a much lower voltage, typically 24 volts a.c. Motors and other essential components will be supplied at mains voltage, typically 400-volt, three-phase 50 Hz. ![]() Aldo remember that some components, typically integral lighting and power sockets may remain live even when the circuit breaker is switched off. The specific arrangements on your site will vary, but in many cases where this device is located within the control panel itself, it must be remembered that the incoming connections to the device will remain live, even when switched to the open (off) position. In many cases the supply to a control panel will enter through a circuit breaker, although in some cases this may simply be a disconnecting device that offers no fault protection. ![]() This can then help you determine if there is inefficient wiring and wasted space. When working with electrical control panels you should first understand what it is used for. With that said, companies don’t want to lose too much room space with a giant metal box either. Smaller ones typically have higher device density, which pose a greater risk of overheating. The size of an enclosure is also important. The enclosure must be substantial enough to offer protection in its installed environment and will typically need to be able to withstand impact, vibration, heat, dust, liquids and corrosive chemicals. It stores the components inside them and acts as a barrier between the hazards contained within and persons on the outside. EnclosuresĪn enclosure is the body of an electrical control panel. To help get you started, here are the basics to some of the first electrical control panel components you should know about. ![]() We advise learning through training courses to identify and deal with these risks safely. In addition to electricity, pneumatic and hydraulic energy, as well as retained heat may also be a considerable risk to anyone who has need to enter. Control panels are designed to differing standards, based on age and country of manufacture, and whilst the panels might appear to be uniform on the outside, their content and layout internally can be quite different.
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