Answer / rajkumar

current tr, (voltage tr---1 phase, 3 phase---LT, HT)and power tr
current tr--- used mainly to measure current flowing in a
conductor(current flowing conductor is primary and you will
get mA in secondary coil which you can use for measurement)
voltage Tr----to boost or reduce voltage ..ie if you apply
low voltage in primary winding you can get high voltage at
secondary winding and vice versa according to winding
designs. core and shell are designed to minimise tranform
losses.
power Tr---tranforms both current and voltage ..winding with
electronics to boost or reduce power

in rotark mov in display err msg showing how to remove the error

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

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