Interested to Buy Any Domain ? << Click Here >> for more details...
what is ups Paralleling? how is load sharing at that time ?
what are the things we have to note that time?
- 1 Answers
- 4282 Views
- I also Faced
- E-Mail Answers
Answer Posted / prakash
UPS Paralleling means distribution of load between two or
more UPS'. Or you can use one as backup or stand by ups.
While paralleling the UPS, one must check following,
Input Voltage, Neutral to Earth Voltage, Neutral earthing
etc.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is meant by rotating magnetic filed
what is the difference between STAR and DELTA connection and application wise how it can be utilizedd
What is a fuse? How does it work? What are materials used?
What is a copper loss or i2r loss pc?
What are the internal and external faults?
Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?
What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?
does a DG set has low fault level as compared to that of a transformer.If yes then why.
what is the id1 & id2 setting in differential protection relay of CSPC?
How to decide DO set rating of Transformer?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
What is transient Phenomenon?
What is turn ratio of a transformer?
i need project topics along with circuit diagram in the electrical and electronics engg and also some websites regarding projets.
why the name trunking bus PT
