-
-
-
![]() |
| CsanyiGroup » Low Voltage |
|
 Arc-resistant low voltage switchgear |
| For years, electrical equipment has been designed to withstand and deal with the issue of bolted faults, where the current spikes to a dangerously high level but is safely interrupted by the protective devices contained in the equipment (breakers, fuses and relays). However, these devices typically do not detect and interrupt dangerous internal arcing faults, [...] |
| Sat, 16 Oct 2010 12:52:24 +0000 |
| Acti 9 – New Smarter Modular Systems |
| Acti 9 represents the fifth generation of Schneider’s low voltage modular systems. His older brother Multi 9 has finally evolved to much better and smarter system. Multi 9 was the famous and most known product of Schneider’s ex brand Merlin Gerin (now is incorporated into Schneider global brand), and now new Acti 9 is ready [...] |
| Tue, 25 May 2010 21:16:07 +0000 |
| GE AKD-20 Low-Voltage Switchgear |
| AKD-20 low-voltage switchgear continues the tradition of the AKD switchgear line while delivering enhanced arc flash protection. Built to ANSI standards, its protection features include non-vented panels plus insulated and isolated bus, and it integrates our new state-of-the-art EntelliGuard® breaker-trip unit system. It also features an optimized footprint so that it now fits into a [...] |
| Sun, 09 May 2010 11:11:46 +0000 |
| Bus Joint Fundamentals |
| Proper design of bus bar joints is a necessity for long equipment life. The objectives that a good bolted bus bar joint must fulfill include: • It must provide good conductivity, so that the bus system will meet the temperature rise requirements in the ANSI standards. • It must withstand thermal cycling, so that the [...] |
| Wed, 28 Apr 2010 19:07:33 +0000 |
| Guide To Low Voltage Busbar Trunking Systems (1) |
| Modern electrical desdign and installations are often placing increasing demands on all products of the electrical equipment manufacturer. Products must have: • Reliable service life • Adaptability to new requirements • Low installation costs • Low maintenance costs • Inherent safety features • Minimal purchase cost • Energy efficiency . In today’s market one of [...] |
| Sat, 17 Apr 2010 20:22:01 +0000 |
|
-
-
-
![]() |
| CsanyiGroup » IEC Standards |
|
| Benefits Of IEC 61850 |
| One of the significant challenges that substation engineers face is justifying substation automation investments. The positive impacts that automation has on operating costs, increased power quality, and reduced outage response are well known. But little attention is paid to how the use of a communication standard impacts the cost to build and operate the substation. [...] |
| Fri, 02 Jul 2010 19:17:33 +0000 |
| Standard IEC 60947-2 |
| This standard applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1000 VAC or 1500 VDC.; it also contains additional requirements for integrally fused circuit-breakers. It applies whatever the rated currents, the method of construction or the proposed applications of the [...] |
| Sun, 27 Jun 2010 15:24:21 +0000 |
| ANSI/IEC Relay Symbols |
| There are two methods for indicating protection relay functions in common use. One is given in ANSI Standard C37-2, and uses a numbering system for various functions. The functions are supplemented by letters where amplification of the function is required. The other is given in IEC 60617, and uses graphical symbols. To assist the Protection [...] |
| Wed, 14 Apr 2010 20:23:00 +0000 |
| IEC standardi |
| Principi IEC standarda IEC 60364 i 60479-1 predstavljaju osnove na kome počiva većina električnih standarda u svetu. Dole su prikazani oni najvažniji. Više o ostalim standardima – klikni ovde. IEC 60364-1 Electrical installations of buildings – Fundamental principles IEC 60364-4-41 Electrical installations of buildings – Protection for safety – Protection against electric shock IEC 60364-4-42 [...] |
| Fri, 30 May 2008 13:14:33 +0000 |
-
RSS-Medium Voltage
![]() |
| CsanyiGroup » Medium Voltage |
|
| Maintenance Of SF6 Gas Circuit Breakers |
| Sulfur Hexafluoride (SF6) is an excellent gaseous dielectric for high voltage power applications. It has been used extensively in high voltage circuit breakers and other switchgears employed by the power industry. Applications for SF6 include gas insulated transmission lines and’gas insulated power distributions. The combined electrical, physical, chemical and thermal properties offer many advantages when [...] |
| Wed, 05 May 2010 13:35:03 +0000 |
| Siemens MV Topic – Loss Of Vacuum |
| If a vacuum interrupter should lose vacuum, several operating situations should be considered: 1. With contacts open 2. When closing 3. When closed and operating normally 4. When opening and interrupting normal current 5. When opening and interrupting a fault. Cases 1, 2 and 3 are relatively straightforward. Generally, the system sees no impact from [...] |
| Wed, 24 Mar 2010 20:39:56 +0000 |
| Maintenance Of Meduim Voltage Circuit Breakers |
| Medium-voltage circuit breakers rated between 1 and 72 kV may be assembled into metal-enclosed switchgear line ups for indoor use, or may be individual components installed outdoors in a substation. Air-break circuit breakers replaced oil-filled units for indoor applications, but are now themselves being replaced by vacuum circuit breakers (up to about 35 kV). Medium [...] |
| Sat, 13 Feb 2010 13:07:29 +0000 |
| Comparison Between Vacuum and SF6 Circuit Breaker |
| Until recently oil circuit breakers were used in large numbers for Medium voltage Distribution system in many medium voltage switchgears. There are number of disadvantages of using oil as quenching media in circuit breakers. Flammability and high maintenance cost are two such disadvantages! Manufacturers and Users were forced to search for different medium of quenching. [...] |
| Sun, 23 Aug 2009 10:19:29 +0000 |
| MV-LV Transformer Substations Short Circuits |
| An electrical transformer substation consist of a whole set of devices (conductors, measuring and control aparatus and electric machines) dedicated to transforming the voltage supplied by the medium voltage distribution grid (e.g. 12kV or 20kV), into voltage suitable for supplying low voltagelines wit power (400V-690V). . Related articles |
| Sat, 15 Aug 2009 18:43:22 +0000 |
|
