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Author Archive for: Edvard Csanyi

Edvard Csanyi

Website: http://electrical-engineering-portal.com

1329 awesome technical articles.

Edvard

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry fascilities. Professional in AutoCAD programming. Present on

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How residual current device (RCD) works?

The residual current device (rcd) is used to detect earth fault currents and to interrupt supply if an earth current flows. The main application is to prevent electrocution but RCDs… Read more

Jun 11, 2011 | Edvard

Figure 1 - Residual current device components

How heat pump works?

The heat pump transfers the heat between the heating/cooling distribution system and the earth connection. It is the basic building block of the GSHP system. The most common type of… Read more

Jun 10, 2011 | Edvard

The Refrigeration Cycle (Heating Mode) of a Typical Packaged Heat Pump Unit.

Stand-Alone PV Systems

Stand-alone PV (photovoltaic) systems are used when it is impractical to connect to the utility grid. Common standalone systems include PV-powered fans, water pumping systems, portable highway signs, and power… Read more

Jun 08, 2011 | Edvard

3000W Off-grid polar power system

ABB – AIS UniGear ZS1 design features

UniGear ZS1 is medium voltage switchgear with a metal enclosure, suitable for indoor installations. Metal partitions segregate the compartments from each other and the live parts are air-insulated. Since the… Read more

Jun 06, 2011 | Edvard

ABB - AIS (air insulated switchgear) UNIGEAR ZS1

Construction and service life of GIS

GIS is assembled of standard equipment modules (circuit breaker, current transformers, voltage transformers, disconnect and ground switches, interconnecting bus, surge arresters, and connections to the rest of the electric power… Read more

Jun 04, 2011 | Edvard

Figure 2.1 Single-phase enclosure GIS

How contactor controls an electric motor?

When a relay is used to switch a large amount of electrical power through its contacts, it is designated by a special name: contactor. Contactors typically have multiple contacts, and… Read more

Jun 01, 2011 | Edvard

Control of electric motor with contactor

GIS control system

For ease of operation and convenience in wiring the GIS back to the substation control room, a local control cabinet (LCC) is provided for each circuit breaker position (Figure 1)…. Read more

May 29, 2011 | Edvard

GIS control system

GEAFOL – cast-resin transformer

The Siemens’s transformer GEAFOL principle has succeeded in producing transformers with excellent electrical, mechanical and thermal characteristics, which have also proved to be particularly compatible with the environment. GEAFOL transformers… Read more

May 27, 2011 | Edvard

Siemens's cast-resin transformer 'GEAFOL'


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