Dear,
40 KVA Astrid UPS giving Alarm A13 "INV OUT TOL" ( inverter output voltage out of tolerance), Also UPS going to Bypass mode. What can be the possible causes? How we can fix this problem? Thanks in advance
Dear All,
We Have 33 KV filter bank circuit for Compensation plant which include Line CT, Reactor and capacitors bank, we are facing trouble as this one phase circuit is tripping with Thermal protection and others are Ok, reactor value 11.85mH, Line CT 1000/1, Unbalance CT 10/5 CPR-04 relay is...
thread238-468572,
Dear Anoter,
due to Affected by Covid-19 last year i stopped posting the reply of the Thread 238-468572,
can we remove the resistance from the attached circuit and Calculate the neutral current same as you did in previous circuit, in place of 12 microfarad values. can we make...
We have 3 phase LC Filter circuit 21.66mH per Phase also the Capacitance value in all 6 Branches which are Xc1 = 27.2231µF, Xc2 = 27.2499, Xc3 = 26.6247 ( one star group), Xc4 = 26.6499,Xc5 = 26.7749, Xc6 = 26.7747(2nd star group), i want to calculate the Neutral current for unbalance...
Dear Engineers,
We have Filter bank line voltage is 33 KV ( 33000V), ungrounded double star connection. capacitors are connected series parallel group. each phase one row is connected to star1 and other row is connected to star2 , unbalance CT is connected in between both star point. i want to...
DEAR ALL,
WE HAVE 3.3 KV 160 KW MOTOR, 7SJ600 NUMERICAL PROTECTION RELAY USING FOR MOTOR PROTECTION
MY QUESTION IS WHAT SHOULD BE THE SETTING VALUES FOR OVER CURRENT PROTECTION I> LOW SET I >> HIGH SET I>>> INSTANTANEOUS SET AND IE> IE>> SETTING WITH DEFINITE TIME, MOTOR IS CONTINUOUS...
Dear technical friends,
WE HAVE TRANSFORMER 132/66 KV 150 MVA WITH OFAF AND 75 MVA WITH ONAN. AND OUR TOTAL LOAD IS EXCEEDING ITS LIMIT AND GOING BEYOND ITS RATING 150 MVA. MY QUESTION IS HOW WE CAN INCREASE TRANSFORMER CAPACITY IN EASY WAY EITHER BY COOLING SYSTEM OR ANY OTHER METHOD? BECAUSE...
