Current Protection; Voltage Protection; Frequency Protection - ABB Relion REG670 Product Manual

ABB
Generator protection REG670 ANSI
Customized
Product version: 1.2
Back-up protection functions
IEC 61850 ANSI Function description

Current protection

PHPIOC 50 Instantaneous phase overcurrent protection
OC4PTOC 51_67 Four step phase overcurrent protection
EFPIOC 50N Instantaneous residual overcurrent protection
EF4PTOC 51N_67 Four step residual overcurrent protection
N
NS4PTOC 46I2 Four step directional negative phase sequence overcurrent protection
SDEPSDE 67N Sensitive directional residual overcurrent and power protection
TRPTTR 49 Thermal overload protection, two time constant
CCRBRF 50BF Breaker failure protection
CCRPLD 52PD Pole discordance protection
GUPPDUP 37 Directional underpower protection
GOPPDOP 32 Directional overpower protection
NS2PTOC 46I2 Negative sequence time overcurrent protection for machines
AEGGAPC 50AE Accidental energizing protection for synchronous generator

Voltage protection

UV2PTUV 27 Two step undervoltage protection
OV2PTOV 59 Two step overvoltage protection
ROV2PTOV 59N Two step residual overvoltage protection
OEXPVPH 24 Overexcitation protection
VDCPTOV 60 Voltage differential protection
STEFPHIZ 59THD 100% stator earth fault protection, 3rd harmonic based

Frequency protection

SAPTUF 81 Underfrequency protection
SAPTOF 81 Overfrequency protection
SAPFRC 81 Rate-of-change frequency protection
1MRK 502 031-BUS B
Generator
REG670
0-4
0-6
0-2
0-6
0-2
0-2
0-3
0-4
0-4
0-4
0-4
0-2
0-2
0-2
0-2
0-3
0-2
0-2
0-1
0-6
0-6
0-3
11