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|How reverse power relay sense the power is reverse in the
|give me name of current and volatge control device
|WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder
in LV substation panel.It is supplying to a lighting & power
socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8
times of Ir , tsd = 0.5 sec( I2 t off).
Sometimes this MCCB is tripping .But no trip in DB MCB.
Can anybody tell me reason ?
From where i can know about the MCCB settings?
|plz tell me the potential difference between phase and netrul
|what is meant by excitation
which supply is used whether ac r dc in the lab
|what is rotor earth fault protection scheme in hydro
generator & what is dc field flashing ?
|Wat is power factor exact meaning in terms of technical
terms plz explain ?
|what is the working principle of DC generator ?
|what happend if we remove dc exciter
|What is breather? why we use it ?
|What is the winding resistsnce need to be in a 1000kva,
11kv/415v transformer, between ht winding to lt winding, ht
winding to earth, lt winding to earth.?
|On what basis no of earth pits are to be decided either for
transformers or for equipment?
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