Siemens SIPROTEC 7SJ80

Functions Pos. 15
Name ANSI-No. Description A
Basic function
(included in all versions)
3)
— Control
50/51 Time overcurrent protection phase 50-1, 50-2, 50-3, 51
50N/51N Time overcurrent protection ground 50N-1, 50N-2,
50N-3, 51N
50N(s)/
51N(s)
Ground fault protection/ ground short-circuit protection
50Ns-1, 50Ns-2, 51Ns
1)
— Intermittent ground fault protection
87N High-impedance ground fault differential protection
(87N (REF) only available with sensitive ground current
input (position 7 = 2)
49 Thermal overload protection
74TC Trip circuit supervision
46 Negative sequence overcurrent protection
50BF Breaker failure protection 50BF
37 Undercurrent surveillance
86 Lock out
— Cold-load pickup
Monitoring functions
Circuit breaker control
Flexible protection functions (parameters from current)
Inrush restraint
Basic design
4)
+ ground fault direction detection
+ voltage protection
+ frequency protection
51V Voltage-controlled inverse-time overcurrent protection B
67N Directional ground fault protection
67N-1, 67N-2, 67N-3, 67N-TOC
67N(s) Directional ground fault protection/ground short circuit
protection
67Ns-1, 67Ns-2, 67Ns-TOC
1)
64/59N Displacement voltage
27/59 Undervoltage / overvoltage
81 U/O Underfrequency / overfrequency, f< ,f>
47 Phase sequence
32/55/81R/
27R/59R
Flexible protection functions
(parameters from current and voltage):
Voltage protection, power protection,
power factor protection, frequency change protection
and
voltage change protection
Ordering Information and Accessories
A.1 Ordering Information 7SJ80
428 SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017