difference between a four point starter and three point
starter
Answer Posted / sandeep
In case of any three pointstarter NVC is connected to the shunt field winding so if voltage is fall certain value the no volt release coil de magnetise so motor will be off. But in case of four point starter the no volt release coil is directly connected to the supply so the NVC no way the demagnetized.
| Is This Answer Correct ? | 1 Yes | 4 No |
Post New Answer View All Answers
iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.
how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you
Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.
how to protect motor in dol starter having capacity of 30 hp.40 hp?
what are the range of memory address in plc for L&T lx7 4A
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
if any house we instaled a 1.5 ton ac and its phase cable of wiring is installed but netrual cable of wiring not instaed. my question is that is neutual of house(for other wiring is capable for ac load or a sepeart neutrual wiring required
what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.
63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?
What are the difference between CT/PT operated Meter and RRAMR Meter for HT/LT application?
What are the parts in a inverter?
explain safety measures in alternator?
what parameters should we check to reduce the power bill