IEC 61850 or
Function name
ANSI
Function description
Generator
REG650
REG650 (B01
A)
Gen diff
REG650 (B05
A)
Gen+Trafo diff
TRPTTR
49
Thermal overload protection, two time constants
0–2
2
2
CCRBRF
50BF
Breaker failure protection, 3–phase activation and output
0–1
1
1
CCRPLD
52PD
Pole discordance protection
0–1
1
1
GUPPDUP
37
Directional underpower protection
0–1
1
1
GOPPDOP
32
Directional overpower protection
0–2
2
2
AEGGAPC
50AE
Accidental energizing protection for synchronous generator
1
1
1
NS2PTOC
46I2
Negative-sequence time overcurrent protection for machines
1
1
1
VRPVOC
51V
Voltage-restrained time overcurrent protection
1
1
1
Voltage protection
UV2PTUV
27
Two step undervoltage protection
0–1
1
1
OV2PTOV
59
Two step overvoltage protection
0–1
1
1
ROV2PTOV
59N
Two step residual overvoltage protection
0–2
2
2
OEXPVPH
24
Overexcitation protection
0–1
1
1
STEFPHIZ
59THD
100% Stator earth fault protection, 3rd harmonic based
0–1
1
1
Frequency protection
SAPTUF
81
Underfrequency function
0–4
4
4
SAPTOF
81
Overfrequency function
0–4
4
4
SAPFRC
81
Rate-of-change frequency protection
0–2
2
2
2.3
Control and monitoring functions
IEC 61850 or Function
name
ANSI
Function description
Generator
REG650
REG650 (B01
A)
Gen diff
REG650 (B05
A)
Gen+Trafo diff
Control
SESRSYN
25
Synchrocheck, energizing check, and synchronizing
0–1
1
1
SLGGIO
Logic Rotating Switch for function selection and LHMI
presentation
15
15
15
VSGGIO
Selector mini switch
20
20
20
Table continues on next page
Section 2
1MRK 502 048-UUS A
Available functions
40
Technical manual