Answer Posted / ahmed arafa _bapetco
Anti-pumping relay is used to avoid closing of the circuit
breaker when there is afaulty case , so the closing coil of
the circuit breaker can not be energised until the path is
healthy and the trip is not exist
Is This Answer Correct ? | 15 Yes | 4 No |
Post New Answer View All Answers
state the working principle of incondenscent tube?
Why transformer used in UPS??
What is trip and closing coil in cb? Why need of them
LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?
from which formula we select a capacitor rating?
Generation of voltage for each phase are same of a turbogenerator.Although the short circuit current flow when two phase of turbogenerator are shorted(where current can't flow without potential difference),why?
What is the magnetic field (coil DC ) of Turbo Expander?
what is the size of cable for 15kw motor and 85 meter cable length using with vfd
how does WTI work ?
Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?
I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??
how to select rating of HT Panel
What's the difference between non break power supply and non break non short break power supply
What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?