According to my personal experience:
Omicron (
CMC256-6 is ready for IEC61850.
They have ethernet port, they can trip by GOOSE messages instead of binary inputs, they are able to import SCD files etc.
They have the new XRIO concept to draw characteristics for a lot of relays (without need to import the RIO files, characteristic is generated by the XRIO itself). They can test in primary or secondary quantities.
Software is easy to use (you do need some practice).
Performances are more than enough for testing numerical relays.
Very good Comtrade Viewer.
ISA (
DRTS-6: no ethernet port (yet?). Only RS232 or USB.
Some parts of the software are very good and easy to use.
Very good export of test data, in Microsoft DataBase format. Easy to elaborate them with Excel.
Possibility to test in primary and/or secondary quantities.
Similar concept to Omicron XRIO: a library of functions that draw relay characteristics (mainly distance protection) for the different relays.
Sometimes tricky software (sequences), but usually well running and easy to use (easier than Omicron).
Doble (
Software was not easy to use, now it is better but still it looks like glued on the old software. Anyway much better than before. In my opinion much less user friendly then Omicron and/or ISA.
They do have ethernet interface, not ready for IEC61850 but as far as I know they will come soon with it.
Hardware is superior to the other 2, but you appreciate it only while testing elechtromechanical relays. For numerical relays there is no clear advantage.
General Electric - Programma (Freja 300). (
When (or if) are 6 current generators coming?
Still RS232 port?
What about ethernet interface?
Software is very easy to use but the performances are also limited. Quite slow in testing distance protections.