I have a question from all respected memebers. The pressure in GIS is always above atmospheric pressure (6.5 bar in Circuit Breakers and Isolators and 5.5 in VT/PT and Busbars), while atmospheric is always less (say 1 atm). In case of leakage, it is confirm that always SF6 will be released into...
Dear Respected engineers,
Referring to the attached photographs, we have a mobile GIS (Gas Insulated Substation), made in 1992 by ABB Lodi, Italy. The mobile GIS primary voltages if 132kV at 50Hz.
The problem we are facing is that past few months, is that PT drops its pressure of SF6 gas...
Hi all,
We have a 184 Cell (each cell is of 275Ah, 1.2V, Gaz Make NiCd )battery bank and a battery charger which is some 20 years old. Now, I want to test battery charger for its performance that it is performing good or not?
1. What paramters should I test and check for performance of...
dear all,
I am now conforted to maintenance and re conditioning of various type of old and new MOVs (Motor Operated valves). I have no past experience with these devices. Can i get some good technical literature, books on them how they work, types, troubleshooting etc etc.
I am sorry, if there...
