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?5 8291
what is the differnce of STATIC ENERGY METER FROM ordinary energy meter?1 2150
What is the difference between double compression7 54172
how current flows in circuit?11 12246
What is the current flow in 230v ac supply ? What is the current flow in 415v Ac supply ?6 27413
why the power factor in inductive load is lagging while it is leading in capacitive load?6 15841
what type of earthing is done on hilly rocks.4 14000
Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.1454
list the type of vfd? wich is sutable for heating kiln?
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
why the projects getting loss?
armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?
Earth bits close or open. Which is correct
what is the IS foe lightning arrester?
how r charge carriers produced
how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?
what is the difference between ups & inverter
what is differant beetween overload current and phase current?
why to use freewheeling diode ( diode in revers bias mode) across dc coil
define the non synchoronism of synchoronous machine in general g or m??
why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?