Edvard Csanyi
1750 awesome technical articles
Hi, I'm an electrical engineer, programmer and founder of EEP - Electrical Engineering Portal. I worked twelve years at Schneider Electric in the position of technical support for low- and medium-voltage projects and the design of busbar trunking systems.
I'm highly specialized in the design of LV/MV switchgear and low-voltage, high-power busbar trunking (<6300A) in substations, commercial buildings and industry facilities. I'm also a professional in AutoCAD programming.
Biography: https://electrical-engineering-portal.com/edvard-csanyi
Electric Motor
Keeping Motor At Correct Temperature When Connected To a Frequency Converter
When a motor is connected to a frequency converter it must be kept at the correct temperature, and this is subject to two types of influence: If the speed decreases, the cooling air volume goes down. If a non-sinusoidal motor… Read more
Jul 05, 2013 | By Edvard Csanyi
Energy and Power
A Few Words About Battery Hazards and Why They Happen
Because batteries store large amounts of energy, there are certain hazards that are associated with battery operation. These hazards must be fully understood to ensure safe operation of batteries. Cell short circuits can be caused by several conditions, which include… Read more
Jul 03, 2013 | By Edvard Csanyi
Energy and Power
Surge protective categories defined by ANSI/IEEE C62.41
Three different surge protective classes or zones have been defined by ANSI/IEEE C62.41, Recommended Practice on Surge Voltages in Low Voltage Power Circuits. These classes are illustrated in the pictorial diagram Fig. 12-1. Category C (outdoors) is the region outside the… Read more
Jun 28, 2013 | By Edvard Csanyi
Electric Motor
Mysterious synchronous operation of generator solved
To many people, the operation of a synchronous generator is very mysterious and strange. Here is this huge machine which runs are a constant speed whether the 4 – 24 inch steam valves are wide open or shut tightly the machine speed is… Read more
Jun 21, 2013 | By Edvard Csanyi
Electric Motor
Few Words About Capacitor-Start (CS) Motors
The capacitor-start (CS), or more precisely, capacitor-start, induction-run motor, is a modified split-phase induction motor used for hard-to-start loads. CS motors are efficient and require starting currents about 5 times their full-load currents. The schematic Figure 1 shows that the… Read more
Jun 14, 2013 | By Edvard Csanyi
Electric Motor
Split-phase motors for medium-duty applications
The split-phase (SP), or more accurately, the resistance-start, split-phase, induction run motor,is recommended for medium-duty applications. It can run at constant speed even under varying load conditions where moderate torque is acceptable. Split-phase motors have squirrel-cage rotors and both a main or… Read more
Jun 12, 2013 | By Edvard Csanyi
Energy and Power
Impacts of Voltage Dips on Power Quality Problems
Figure 1 shows the profile of a voltage dip, together with the associated definitions. The major cause of voltage dips on a supply system is a fault on the system, that is sufficiently remote electrically that a voltage interruption does… Read more
Jun 07, 2013 | By Edvard Csanyi
Transformers
Glossary of Power Transformer Terms
There are many terms associated with power and distributive transformers used in electrical networks. These are just some of the most important. Feel free to add any of missing terms in the comment below ;) An Ansi (American National Standard… Read more
Jun 05, 2013 | By Edvard Csanyi
Energy and Power
Transformer temperature, oil level and pressure gauges
Temperature controls are required in order to turn on and off the cooling equipment. These controls are usually combined with a visible dial-type gauge that measures ‘winding temperature’. This is really a misnomer because the gauge does not actually contact… Read more
Jun 03, 2013 | By Edvard Csanyi
High Voltage
High voltage testing – Direct current (DC)
DC tests are used mainly to do “pressure tests” on high voltage cables. Although the cables operate with AC, AC testing is not practical. The high capacitance of the cables necessitates AC test sets with a high kVA rating to… Read more
Jun 01, 2013 | By Edvard Csanyi
Energy and Power
MCset – Air Insulated Switchgear with SF6 CB
MCset is Schneider Electric‘s AIS – Air Insulated Switchgear (indoor metal-enclosed device) intended for the MV section of HV/MV substations and high power MV/MV substations up to 24kV. Main component of MCset is circuit breaker which is SF6 type. MCset – Air… Read more
May 31, 2013 | By Edvard Csanyi
Electric Motor
Three Phenomenons In The Iron Of AC Machines
Most of our practical AC machines (motors, generators ad transformers) depend heavily on the magnetic field for operation. The core iron of the machine provides a path for the magnet field. There are a number of phenomena in the iron… Read more
May 29, 2013 | By Edvard Csanyi
Hydropower
7 reasons to fail with small hydro-power development
The main reasons for lack of success with small water power development are: Failure to realize how important full field data is for proper design. Failure of homemade equipment made with junked parts. Over-estimating the amount and constancy of the… Read more
May 27, 2013 | By Edvard Csanyi
Testing and Commissioning
Condition Monitoring of Transformers
It is possible to provide transformers with measuring devices to detect early signs of degradation in various components and provide warning to the operator in order to avoid a lengthy and expensive outage due to failure. The technique, which can… Read more
May 24, 2013 | By Edvard Csanyi
Testing and Commissioning
Transformer Routine Dielectric (Insulation) Test
The following insulation tests are performed in order to meet the transformer insulation strength expectations. Unless otherwise requested by the customer, the following test are performed in the following order (IEC 60076-3) : To confirm the insulation of the transformer terminals… Read more
May 23, 2013 | By Edvard Csanyi
