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Hi every body Hope find aswers for my inquiries I have 2 power transformers Each one 20 mva Each one in separate grid station And distrbution feeders 13.8 kv connected together from both of substations When I paralleled both feeders trips occurred Both feeders have same voltage And hz But...

Hi guys sorry for disturbing you .. How can I connect ht cut out fuse on medium voltage on over head line? In attached pic there is 2 points A and B ? Where is the load and source side to point A or B ? What about if I connect opposed...

Thanx alot of u I mean the lost revenue for the power which was not delivered,

Hi everybody I have question about : If I have mv feeder 13.8 kv trip for 4 hours and there is more than 400 customer on that feeder How can calculate losses of money due to that outage.

hallo every body i am working in distribution system in control exactly and iam using paper single line diagram to make my operation with the outside staff to make switching in mv switchgears my inquery i need to develop this control room to be use huge screen toutchable and advanced...

thanx for reply no the device which installed over current and earth fault only . and the transformer load almost 90 % of nominal capacity .

this is sketch for my quz when feeder 1 trip the transformer 500 kva trip also.

Sorry for all :) I have RMU switchgear connected to transformer 500 kva (package sustation) And this substation getting supply from main distrbution feeder 11 kv My question : When some feeder from the grid station trip the package substation CB trip? Why the circuit breaker which...

Hi can any one help pls. I have mv cb provided by oc/ef relay supplying dist transformer. When main feeder trip this cb also trip for information this yransformer on seprate feeder but from one main sustation. Thank you

right but my question how can I detect the fault when the outage happen ? what the devices can help me ?

thanks a lot this info its useful

Hello can anyone help me to detect fault in MV cables . in this pic's

Hi i have question about that CT which marked with true . my quz is : if i removethect secondary wire and the circuit is run is there any problem ? why this ct is steel layers there is no cupper wire turend aroung the core ? thnx alot

Hi This is CT is installed around mv cable 13.8 kv in RMU and connected to EFI (DEVICE TO DETTECT Fault on mv cable and the flag down .when operator patrole the feeder he can konws the fault pass throughen this circuit . My ques When i open the ct secondary terminals is there any mistake ...

Hi every body i have inquiry about the batteris in subsatations : 1- how to select the suitable battery and suitable charger ? 2- is there any relation between the battery and charger ? thanx alot