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2.3
Back-up protection functions
GUID-A8D0852F-807F-4442-8730-E44808E194F0 v13
IEC 61850 or
function name
ANSI
Function description
REG670 (Customized)
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection
0-4
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps
0-6
EFPIOC
50N
Instantaneous residual overcurrent protection
0-2
EF4PTOC
51N
67N
2)
Directional residual overcurrent protection, four steps
0-6
NS4PTOC
46I2
Four step directional negative phase sequence overcurrent
protection
0-2
SDEPSDE
67N
Sensitive directional residual overcurrent and power protection
0-2
TRPTTR
49
Thermal overload protection, two time constants
0-3
CCRBRF
50BF
Breaker failure protection
0-4
CCPDSC
52PD
Pole discordance protection
0-4
GUPPDUP
37
Directional underpower protection
0-4
GOPPDOP
32
Directional overpower protection
0-4
NS2PTOC
46I2
Negative sequence time overcurrent protection for machines
0-2
AEGPVOC
50AE
Accidental energizing protection for synchronous generator
0-2
VRPVOC
51V
Voltage restrained overcurrent protection
0-3
GSPTTR
49S
Stator overload protection
0-1
GRPTTR
49R
Rotor overload protection
0-1
Voltage protection
UV2PTUV
27
Two step undervoltage protection
0-2
OV2PTOV
59
Two step overvoltage protection
0-2
ROV2PTOV
59N
Two step residual overvoltage protection
0-3
OEXPVPH
24
Overexcitation protection
0-2
VDCPTOV
60
Voltage differential protection
0-2
STEFPHIZ
59THD
100% stator earth fault protection, 3rd harmonic based
0-1
Frequency protection
SAPTUF
81
Underfrequency protection
0-6
Table continues on next page
1MRK 502 071-UUS A
Section 2
Application
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
49
Application manual
Summary of Contents for RELION 670 SERIES REG670
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