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In principle, the protection of medium voltage motors is similar to low voltage motors, but the requirements are more demanding. Being closer to the utility source, medium-voltage motors are more… Read more
Dec 16, 2019 | Electric Motor
Various aspects of reactive power compensation problems have already been mentioned in previous articles. However, because of consistency of this article, we will remind ourselves briefly on basic terms and…...
Dec 12, 2019 | Low Voltage ♛
This technical article will try to shed some light on why and how electrical equipment fails and what’s happening before and during the failure of particular substation equipment like switchgear,… Read more
Dec 09, 2019 | Power Substation
MV/LV substations are not only a point of supply but also provide a means of network isolation in the event of faults or emergencies. In that manner, a detailed substation…...
Dec 05, 2019 | Power Substation ♛
It is a common practice to use the differential relay as primary fault protection for the generator. Backup fault protection is also highly recommended to protect the generator from the… Read more
Dec 04, 2019 | Energy Generation
As you should already know, current transformers are used for metering and relay protection purposes. When we are talking about current transformers used for metering, their performance is of interest… Read more
Dec 02, 2019 | Metering
For the last several decades, every engineering task related to process control is realized by the use of PLC (Programmable Logic Controller). If we are talking about induction motor control,…...
Nov 27, 2019 | Electric Motor ♛
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… Read more
Nov 25, 2019 | Power Substation
This technical article introduces five main principles involved with substation control building and switchyard services that make a lot of troubles to substation crew if poorly designed. The article covers… Read more
Nov 20, 2019 | Power Substation
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… Read more
Nov 18, 2019 | Electric Motor
This article will provide a description of most important equipment and working principle of a real case motor control centre (MCC). That is an usual name for a switchboard with…...
Nov 14, 2019 | Electric Motor ♛
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… Read more
Nov 13, 2019 | Low Voltage
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… Read more
Nov 11, 2019 | Testing and Commissioning
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… Read more
Nov 06, 2019 | Low Voltage
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… Read more
Nov 04, 2019 | Energy and Power