OMICRON TEST METHOD FOR DTP

1. From relay software Press measure & counter

2. This screen will appeared

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3. For pickup value (sensitivity) Double click on omicron icon

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4. This screen will appear OMICRON MAIN SCREEN click QUICKCMC

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5. There are two methods to test sensitivity 5/1 by applying value in ph R =0.2 A if no trip stop the test and increase the value to 0.3 Ato get the min pickup value

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5/2 by applying value in ph R =0.2 A and make auto test by adjust the increasing value and take stop contact from the diff. relay to stop test at the pickup value So adjust step like as fellow:Triple = CMC156-EPI size = 0.01 AQuantity = I1 time = 0.5 SAnd select auto step and select stop contact then press test

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6. For test harmonic in the main screen press testing tools then press harmonic

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7. This screen will appearput Ia = 5 A time = 1 S select Ia from here and harmonic value = 22 % then file - export

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8. this screen will appear enter the name of your harmonic (any name) for ex. 2 hr 22

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9. this screen will appear then press OK then file - Exit or press here

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10. this screen will appear then press NO

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11. The main screen will appear againPress testing tools then transplay

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12. This screen will appear press add to list

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13. This screen will appear then select your test name and press open

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14. This screen will appear then press ok

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15. This screen will appear then press play (means the tester start to inject if you want to change the harmonic value repeat again from point 7 and adjust according your requirements

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16. For RESTRAIN testOpen screen QUICKCMCThen inject ph R = 2.5 A angle 0 and connect it to ph R HV side, Inject ph S = 1.443 A angle 180, ph T= 1.443 A angle 0 and connect it to ph R ,ph T LV side consequently Then start test and read the measurements from TDP software and take Id , It

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17. Instantaneous function 87B

Disable the harmonic & diff. functions Enable Instantaneous function 87B

Then open QUICKCMC and make auto test for this function to bring the tripping value Like as point Start from 9 A and size 0.1 ALike this screen

Eng. Mohammed Deraz

ThyssenKrupp Co.

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