In India,we use 230V,50HZ,where as many other countries use
110V,60HZ what r d advantages and disadvantages of each of
them?
Answer Posted / raviranjan singh
as compared to other countries our Indian electronics and electrical circuits are designed on these parameters. and every country has specified by different frequencies and voltages.
| Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?
Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?
Difference between earthing & grounding.?
What is oscillator circuit?
what are the different methods for the starting of a synchronous motor.
How can we checked Killo Watts of Motor & Alternator?
What is the function of interposing current transformer?
how oltc works in rectiformers of higher rating (27 mva,200v dc,120kamps) please provide me full information with diaggram.
Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp
WITCH CARDS IN USE IN FIRE CONTROL PANEL.
WHAT IS VCB SAFETY
how pt is using
how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???
Keywords: Die, Card, Coin, B/N 2 To 12
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<