Application-specific variations of the MCCB, these breakers combine the short-circuit and isolation functionality of the MCCB with the motor overcurrent protection of a traditional overload relay. MPCBs are UL 489 Listed… Read more
Dec 07, 2015 | Edvard
As an introduction to ladder diagrams, consider the simple wiring diagram for an electrical circuit in Figure 1a. The diagram shows the circuit for switching on or off an electric… Read more
Nov 30, 2015 | Edvard
When in use, the pumps are always part of a pumping system. A pumping system is usually a network of pipes, tanks, valves and other system parts. The receiver is… Read more
Nov 27, 2015 | Edvard
In many industrial systems, motors are stopped simply by natural deceleration. The time this takes depends solely on the inertia and resistive torque of the machine the motor drives. However,… Read more
Nov 23, 2015 | Edvard
The machine does not start when the start button is pressed. At this point the problem could be mechanical or electrical. We will focus on just the electrical circuit faults… Read more
Oct 26, 2015 | Edvard
Motor nameplate is normally located on all produced electric motors. Understanding nameplate information can be hard sometimes, but is essential. In most countries it is a requirement for manufacturers to… Read more
Aug 29, 2015 | Edvard
A soft starter is, as you would expect, a device which ensures a soft starting of a motor. A softstarter has different characteristics to the other starting methods. It has… Read more
Aug 12, 2015 | Edvard
Direct-on-line (DOL) starting Advantages Drawbacks Star-delta starting Advantages Drawbacks Comparision of DOL and Star-delta starting As the name suggests, direct-on-line starting means that the motor is started by connecting it… Read more
Jul 17, 2015 | Edvard
The problems connected to motor starting operations are fundamentally linked to the type of motor which a determined motor operational torque “CM” offers, to the starting modality and to the… Read more
Jun 22, 2015 | Edvard
Separate field excitation DC motors are still sometimes used for driving machines at variable speed. These motors are very easy to miniaturize, and essential for very low powers and low… Read more
Jun 15, 2015 | Edvard
