By Claudie Ulysse. Electrical Wiring. Publised at Friday, February 02nd 2018, 22:36:45 PM. After successful completion, the troubleshooter can improve their understanding of DC, AC, three phase circuits, Relays, Contactors, PLC, Electronics, and other related technology.
By Charline Rodrigue. Electrical Wiring. Publised at Wednesday, January 24th 2018, 06:42:26 AM. Connections should be secured against accidental loosening. Correctly tighten terminal screws and where a connecting plug is fitted, use the clamps or screws provided to secure it to its mating socket.
By Severin Theodore. Electrical Wiring. Publised at Monday, January 29th 2018, 03:26:36 AM. In general, contactors should be kept away from electronic devices. A highly disturbing device (variable speed drive, frequency converter, etc.) will have less radiation in the panel if it is “encapsulated” in a small, electromagnetically sealed, unpainted metal enclosure.
By Linda Cerise. Electrical Wiring. Published at Thursday, January 18th 2018, 17:55:14 PM. Wires and cables (conductors) are insulated and protected by a variety of materials (insulators) each one having its own particular properties. The type of material used will be determined by the designer who will take into account the environment in which a control panel or installation is expected to operate as well as the application of individual wires within the panel.
By Claudie Ulysse. Electrical Wiring. Published at Thursday, January 18th 2018, 16:50:41 PM. • Black represents ungrounded line, load and control conductors at line voltage. • Red represents ungrounded AC control conductors, at less than line voltage. • Blue represents ungrounded DC control conductors. • Yellow represents ungrounded control circuit conductors that may remain energized when the main disconnecting means is in the OFF position. These conductors must be yellow throughout the entire circuit, including wiring in the control panel and the external field wiring. • White or natural gray represents a grounded circuit conductor. • White with blue stripe represents a grounded DC current-carrying circuit conductor. International and European standards require you to use light blue for the neutral conductor. • White with yellow stripe represents grounded AC current-carrying control circuit conductors that remain energized when the disconnecting means is in the OFF position. For additional circuits powered from different sources that remain energized when the main disconnecting means is in the OFF position, you must use striping colors other than green, yellow or blue to uniquely identify the grounded conductors.
By Augustine Yvonne. Electrical Wiring. Published at Thursday, January 18th 2018, 16:30:03 PM. It would then be connected to the contactors and overload relays that constitute the motor starter. Two of the phases are also connected to the transformer to power the logic. The start and stop buttons are at the left of the box (note: normally these are mounted elsewhere, and a separate layout drawing would be needed).
By Claudie Ulysse. Electrical Wiring. Published at Thursday, January 18th 2018, 16:16:34 PM. Electrical equipment uses a wide variety of wire and cable types and it is up to us to be able to correctly identify and use the wires which have been specified. The wrong wire types will cause operational problems and could render the unit unsafe.
By Severin Theodore. Electrical Wiring. Published at Thursday, January 18th 2018, 12:21:30 PM. Wiring diagrams show the connections to the controller. Wiring diagrams, sometimes called “main” or “construction” diagrams, show the actual connection points for the wires to the components and terminals of the controller.
By Linda Cerise. Electrical Wiring. Published at Thursday, January 18th 2018, 06:53:45 AM. When including a PLC in the ladder diagram still remains. But, it does tend to become more complex. Figure 5 below shows a schematic diagram for a PLC based motor control system, similar to the previous motor control example.
By Blandine Honorine. Electrical Wiring. Published at Thursday, January 18th 2018, 03:51:55 AM. Line diagrams, also called “schematic” or “elementary” diagrams, show the circuits which form the basic operation of the controller. They do not indicate the physical relationships of the various components in the controller. They are an ideal means for troubleshooting a circuit.
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