Generator and Motor Protection Relay block 7SK80 With (3NO +1Nc)

Features and technical specifications:

Motor Protection
1.CT inputs : 4 No’s
2.VT inputs : 3 No’s
3.Binary inputs : 3/7 No’s
4.Binary output’s : 5/8 No’s
5.RS 485 Communication Port

The following functions are available

1. Definite and inverse time-over current protection (phase/ground) (50, 50N, 51, 51N)
2. Directional time-over current protection, ground (67N)
3. Directional over current protection, ground (defi-nite/inverse)(67Ns, 50Ns))
4. Displacement voltage, zero-sequence voltage (59N)
5. Trip-circuit supervision (74TC)
6. Undercurrent monitoring (37)
7. Temperature monitoring (38)
8. Thermal overload protection (49)
9. Load jam protection (51M)
10. Locked rotor protection (14)
11. Intermittent ground fault protection
12. Directional intermittent ground fault protection (67Ns)
13. Over current protection, voltage controlled (51V)
14. Restart inhibit (66/86)
15. Under voltage/over voltage protection (27/59)
16. Forward-power, reverse-power protection (32)
17. Power factor (55)
18. Over Frequency/under frequency protection(81O/U)
19. Circuit-breaker failure protection (50BF)
20. Phase-balance current protection (negative-sequence protec-tion) (46)
21. Unbalance-voltage protection and/or phase-sequence monitoring (47)
22. Start-time supervision (48)
23. Lockout (86)
24. Rate-of-frequency-change protection (81R)
25. Rate-of-voltage-change protection (27R/59R)

This Motor Protection relay block is easily insert in your schematic diagram and connect as you like way.

Applications

Motor protection :-

The SIPROTEC 7SK80 device is specifically designed to protect induction-type asynchronous motors..

Transformer protection:-

The SIPROTEC 7SK80 device provides all the functions for backup protection for transformer differential protection. The inrush suppression effectively prevents unwanted trips that can be caused by inrush currents.