Biblioteca tehnică

The fault current is set to 80mA tosimulatethe high current generated at the intermittent earth fault. The zero voltage is set to 20V;theconfiguration ismade in13 states.The fault states and the first two memory states are set to 20ms. The memory states havetimesselected togetthetrip as close to set time 1,2s as possible. In generator configuration,set U4gen to aux voltage DC.Set “Advanced mode” in SVERKER configuration.

Megger oferă o gamă largă de seturi de cordoane și cleme de diferite dimensiuni și caracteristici electrice pentru utilizare cu testere Megger pentru măsurarea rezistenței de izolație cu 5kV, 10kV și 15kV, permițând utilizatorului să aleagă cel mai potrivit set de cordoane pentru efectuarea măsurătorii.

Reducing the risk of failure on high voltage instrument transformers in the transmission system using the application of narrowband dielectric frequency response (NB DFR) on HV CVTs.

This is an easy solution to measure the impedance values for cables, the values are used for calculation of compensation factor in distance protection.The compensation factor is first theoretically calculated and these values can now be compared with the measured values.

The test and maintenance of electrical components on rolling stock is not an easy job to do. Some maintainers dismount some of the parts and bring them to a central location for revision and maintenance. This is a cumbersome and time consuming exercise. In many cases, the electrical parts are replaced only when they break down and are not subject to periodical testing. This of course holds a risk as some parts, e.g. circuit breakers, are crucial for safety reasons.

The Power Grid Corporation of India Limited (PGCIL) is an Indian state-owned company headquartered in Gurugram (North India) engaged mainly in Trans-mission  of  Power  and  transmits  about  50%  of  the  total  power  generated  in  India  on  its  transmission  network.  The  company  owns  and  operates  about  1,61,790  circuit  kms  of  transmission  lines  at  800/765 kV,  400 kV,  220 kV  &  132 kV EHVAC and +500 kV HVDC levels and 248 sub-stations. Also, it has the transformation capacity of about 396 825 MVA as of 30th November 2019.

Transformer equipment manufacturers (OEMs) have a critical need to measure true ratio, as they must confirm proper manufacture of their transformers during construction and final assembly. Improper construction has consequences of higher cost, late delivery, and poor quality. The ability of a ratio instrument to be used for all steps involved makes it a practical valueto OEMs because only one instrument is purchased and used throughout each stage. Only the most reliable and accurate instruments make it to the factory floor. Winding stack under constructionre used: Art Mandigo Winding Service.

Ingineri de întreținere a turbinelor eoliene, ingineri de fabricare și instalare a turbinelor eoliene, ingineri de testare a cablurilor submarine și ingineri aerospațiale.

Introducerea primului microohmetru care prezintă un contor de diferență, un dispozitiv care transformă schimbările de rezistență într-un indicator în mișcare și o modificare a procentului. Când testați mai multe conexiuni similare, este ușor să detectați acele mici creșteri ale rezistenței care în cele din urmă se transformă în defecțiuni majore.

Safety warnings for DLRO2