No products in the cart.
Testing Siemens 7sj622 Relay’s Directional Overcurrent and Directional Earth Fault Elements
peace be with you all
Can you give me an idea, how to test SIEMENS 7sj622 directional o.c and directional e.f fault relay by using omicron .freja or any Numerical testing instrument?regardes
mohammad elhaje
Did you like this post?
You can share it with these links:
We havent had the luxury of testing that type of siemens relay but do have experience with the software. Basically test the relay as you would any numerical directional overcurrent relay but use the output matrix to assign a contact to the element you wish to test then perform all of your logical tests on the outputs assigned to trip/alarm devices. Use the omicron advanced overcurrent module, as long as you set up your relay object and hardware ok it should test just fine.
Best of luck.
Warm Wishes. I need some clarification regarding the differential trip protection in Line Differential Protection Siemens Siprotec Relay 7SD522. I am using Digsi Seiments software. The relay manual also available in the help menu. If you just click the help menu and select help on device, you can get the manual and search diff protection.
Now I am doing Differential protection test.
1) For diffenential protection, in the I/O masking, I enabled Diff General Trip (3141) and inject the fault current by Omicron. I got the output.
but, If i am enabled Diff Trip 1p L1, I couldn’t get the output. I followed the same procedure which i followed in the Diff General Trip.
Doing a search of the manual for the term you are looking for.
Device prerequisites for phase segregated tripping are:
• Phase segregated tripping is provided by the device (according to the ordering code);
• The tripping function is suitable for pole-segregated tripping (for example, not for frequency protection, overvoltage
protection or overload protection),
• The binary input „>1p Trip Perm“ is configured and activated or the internal automatic reclosure function
is ready for reclosure after single-pole tripping.
Are all those conditions true?