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Neutral Point Treatment in Three-Phase Networks (Detailed Overview and Comparison)

The main faults in power networks are the single-phase short-circuit and the short-circuit to ground. The short-circuit to ground is a conductive connection between a point in the network belonging…...

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Jan 18, 2018 | Edvard

Neutral Point Treatment in Three-Phase Networks

8 Examples Of Transformer Differential Protection Using SIPROTEC Numerical Relays

The following examples show the application of SIPROTEC numerical relays for transformer protection. The individual functions are designated, using ANSI codes (Standard C37.2 – Electrical Power System Device Function Numbers)…....

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Jan 05, 2018 | Edvard

8 Examples Of Transformer Differential Protection Using SIPROTEC Numerical Relays

Analyzing Power System And Equipment Performance Through Oscillographic Records

Most technically oriented people recognize the familiar 60Hz voltage and current traces that constitute the parameters of an operating power system. There are, however, transient components superimposed on the 60Hz…...

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Dec 15, 2017 | Edvard

Analyzing Power System And Equipment Performance Through Oscillographic Records

How Bad Harmonics Influence The Work Of Rotating Machines (Induction Motors)

The presence of harmonics in the work of induction motors can be pretty bad. Why? They produce elastic deformation, that is, shaft deflection, parasitic torques, vibration noise, additional heating, and…...

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Dec 01, 2017 | Edvard

How Bad Harmonics Influence The Work Of Rotating Machines (Induction Motors)

We can load distribution transformer heavily when it is cold, but when it’s hot…

Distribution transformers (commonly mineral-oil-immersed type) are output rated and their loading and sizing guidelines of many utilities are based on ANSI/IEEE C57.91. Distribution transformers can deliver their rated kVA without…...

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Nov 09, 2017 | Edvard

We can load distribution transformer heavily when it is cold, but when it's hot...

3 Applications Of Capacitor Banks Used To Correct The Load Power Factor

Capacitors are used in industrial premises for two basic functions: the first, to correct the load power factor, usually to meet the supplying authority’s supply requirements and avoid tariff penalties…...

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Oct 27, 2017 | Edvard

Medium Voltage Capacitor Banks

4 basic designs of an offshore wind farm collector system and important parameters

As the power capacity of offshore wind farms increases, the adequacy of the wind farm electrical system becomes critical. The efficiency, cost, reliability and performance of the overall wind farm…...

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Oct 01, 2017 | Edvard

4 basic designs of an offshore wind farm collector system and important parameters

4 crucial devices used for distribution system protection (selection and installation tips)

A wide variety of equipment is used to protect distribution networks. The particular type of protection used depends on the system element being protected and the system voltage level. And…...

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Sep 15, 2017 | Edvard

4 crucial devices used for distribution system protection (selection and installation tips)

Reactive power & power factor measurement in industrial plant

Reactive power measurement A varmeter is used to measure the reactive power in an industrial plant that is supplied by an 8300-V, three-phase, four-wire line. The plant load is estimated…

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Jul 31, 2017 | Edvard

Reactive power & power factor measurement in industrial plant

Practical methods of reducing noise and interference on cables

A few practical methods of reducing noise will be examined in this technical article. These include a quantitative consideration of the effects of shielding, cable spacing, earthing (or grounding) and…...

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Jul 15, 2017 | Edvard

Practical methods of reducing noise and interference on cables


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