Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / rahul dev
First Know the Synchronization.
We have to check 4 parameter in sequence listed below.
1. Phase Secquence.(this has to be 1 time.basicly this is
the rotation of the phase.)
2.Voltage has to be equal.(but in practical case votlage
difference not more than 2%)
3.Frequency has to be equal .(but in practical case
Frequency difference not more than 2%)
4.Phase angel difference must be zero(but in practical case
phase angel difference not more than 7*)
so we required in Synchronization Panel.
2 volt meter,2 frequency meter,Phase angel check Relay(CSQ)
in case you dont have the csq you can use the dark lamp
mathod.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
Why we are using DPT(Differential Pressure Transmitter) in separator instead of level trasmitter?
hi sir yhis is zahid ali i am preparing for the jspl at oct.4.please send me the recently updated sample paper.
3. Differentiate between ultrasonic flowmeter and radar type flow meter.
selection of the zener barrier for the hazardeous area zone 0
How to decrease opening & closing time of on/off valve?
how do calibrate the valves.. with clear manual
What is zener diode? What is voltage regulator?
TEMPERATURE VARIATION FOR FREQUENTLY.
How we can check the 2 wire proxy switch? & how it is connected to DI MODULE OF PLC?
typical loop drawing of a simple feedback control comprising of one transmitter and one control
PT RTD Range: -200 to 500 degree celsius If I configured in DCS Lower range and Upper range . In face plate it shows red colour due to overa range how was the characteristics look If the temperature is more than operating range. how was the characteristics look . whether its in Resistance vs Temperature curve is Linear or Non linear
is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?
Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls
Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72
What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?
