High Speed DC Circuit Breaker - G E Power Controls

7.2.1 Example of order 1.
IEC customer wants to order Gerapid breakers:
Line feeders for substation; comply with EN50123, with
breaking capacity of 50kA and with following equipment
and characteristics:
1. Load current of 4000A (Gerapid 4207);
2. Nominal voltage of 1500V;
3. Available auxiliary voltage of 230VAC;
4. With special main terminals for SIEMENS;
5. Without SEL unit (not available with special terminals);
6. With overload tripping unit (OCT), fully adjustable in
range between 6kA…12kA, with 7 marks on the
scale every 1kA, set at 9kA:
7. With TOP terminal polarized as (+);
8. With internal voltage converter at Uin=230VAC
(there is no 24VDC available at the installation);
9. With 10 auxiliary switches;
10. With OCT indicator;
11. With zero voltage release (UVR);
12. Without electrodynamic tripping device;
13. With forced tripping release for withdrawal operations;
14. With contacts’ position indicator;
15. Without sidewalls’ protection;
16. With hand lever;
17. Without arc chute indicator;
18. For installation in Germany;
19. With special, round, controls terminal (108 Harting);
20. Without counter;
Correct PST code generated by the ordering form shall
be:
2 4 A S 1 0 2 5 4 1 6 0 1 1 0 1 0 0 4 1
S47183-e 01/2008 Design and specifications are subject to change without notice 50