Learn how to use PLC and VFD for pump control: Power and control circuits analysis
For the last several decades, every engineering task related to processing control is realized by the use of PLC (Programmable Logic Controller). If we are talking about induction motor control, which is the most common case, usually a VFD (Variable…...
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Nov 27, 2019 | By Miodrag Kokotovic
![Learn how to use PLC and VFD for pump control: Power and control circuits analysis](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/plc-vfd-pump-control-power-control-circuits--360x250.png)
HV/EHV substation switching configurations, control and protection functions
The demand for power is growing rapidly due to increased industrial activities almost all across the world. Various generating sets of large ratings are being set up to meet this requirement. The generator, which is the source of power in… Read more
Nov 25, 2019 | By Edvard Csanyi
![HV/EHV substation switching configurations, control and protection functions](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/substation-switching-configurations-control-protection-functions--360x250.jpg)
Five substation building services that usually lack of proper design (and make troubles later)
This technical article introduces five main principles involved with substation control building and switchyard services that make a lot of trouble to substation crew if poorly designed. The article covers basic internal and external lighting design, heating, ventilation and air-conditioning…...
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Nov 20, 2019 | By Edvard Csanyi
![5 substation building services that usually lack of proper design (and make troubles later)](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/substation-building-services-lack-of-proper-design-troubles-360x250.jpg)
Medium voltage soft starter for heavy-duty motor control (operation and special applications)
A soft starter is an electronic motor controller used on three phase medium voltage squirrel cage induction motors. During motor starting, the soft starter controls the voltage or current supplied to the motor. Motor start performance is optimized by reducing… Read more
Nov 18, 2019 | By Edvard Csanyi
![Medium voltage soft starter for heavy-duty motor control (operation and special applications)](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/medium-voltage-soft-starter-motor-control-applications-360x250.jpg)
The wiring diagram and physical layout of the equipment inside the motor control centre
This article will provide a description of the most important equipment and working principle of a real case motor control centre (MCC). That is a usual name for a switchboard with the purpose of power supply and control of induction…...
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Nov 14, 2019 | By Miodrag Kokotovic
![The wiring diagram and physical layout of the equipment inside the motor control centre](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/motor-control-centre-wiring-diagram-equipment-layout-360x250.png)
4 electrical quantities you MUST fully understand to select the right cast-resin transformer
This the basic question, but it’s important to start from the scratch. Well, distribution transformers link the MV to the LV system and step down the electrical power to be distributed to the intended low-voltage level (e.g. 400 V/230 V… Read more
Nov 13, 2019 | By Edvard Csanyi
![4 electrical quantities you MUST fully understand to select the right cast-resin transformer](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/select-right-cast-resin-transformer-360x250.jpg)
12 on-site checks to inspect the transformer’s health
On-site inspection of the substation transformer usually exposes important condition changes and it initiates various suspicions that need to be investigated in detail. As with any other substation equipment, many things could go wrong during the transformer operation. For example,…...
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Nov 11, 2019 | By Edvard Csanyi
![12 on-site checks to inspect substation transformer](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/checks-to-Inspect-substation-transformer-on-site-360x250.jpg)
13 very important type tests of a low voltage switchgear carried out by the manufacturer
Certification of distribution assemblies is defined by international standard IEC 61439-1. This standard provides common rules that are recognized worldwide. Compliance with the standard is certified, depending on the country or market, by a declaration of the panel builder, the…...
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Nov 06, 2019 | By Edvard Csanyi
![13 most important type tests of a low voltage switchgear performed in a factory](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/type-tests-low-voltage-switchgear-manuafacturers-360x250.jpg)
The essentials of an automatic changeover systems in medium voltage networks
In medium voltage distribution networks, it is important to maintain a high level of reliability. Industry relies on the continuous operation of critical plant, which requires no or little disruption to the electrical supply. There are various methods for building…...
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This content is not available in your premium membership plan. Please upgrade your plan in order to access this content. You can choose an annually based Basic, Pro, or Enterprise membership plan. Subscribe and enjoy studying specialized technical articles, online video courses, electrical engineering guides, and papers.With EEP's premium membership, you get additional essence that enhances your knowledge and experience in low- medium- and high-voltage engineering fields.
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Nov 04, 2019 | By Edvard Csanyi
![The essentials of an automatic changeover systems in medium voltage networks](https://electrical-engineering-portal.com/wp-content/uploads/2019/11/automatic-changeover-systems-medium-voltage-networks--360x250.jpg)