9-14
G650 Generator Protection & Control System
GEK-113285A
9.12 DIRECTIONAL ELEMENTS (67N, 67G)
9 COMMISSIONING
9
9.12DIRECTIONAL ELEMENTS (67N, 67G)
In order to test directional units in the relay, instantaneous trips will be commanded.
Two points will be tested, per phase, test element.
In order to test the directional units, configure (in the "
Setpoint > Relay Configuration > Protection Elements
" screen of
the EnerVista 650 Setup program), some overcurrent element to be supervised by a directional unit. This way, if the
directional element is enabled and detects the fault in the block direction, then the overcurrent unit will not operate. If the
directional element is not enabled or if it is enabled and it detects a fault in a trip direction, then the overcurrent unit will
operate if the set current level is exceeded.
9.12.1 67N ELEMENT
Activate only protection elements 50N and 67N and set the relay as follows:
Configure one of the outputs to be activated only by unit 50G
.
Apply the following tests:
67N SETTINGS
50N SETTINGS
Function
ENABLED
Function
ENABLED
MTA
-45 Deg
Input
PHASOR (DFT)
Direction
FORWARD
Pickup Level
0.50 A
Polarization
VO
Trip Delay
0.30
Block Logic
PERMISSION
Reset Delay
0.00
Pol V Threshold
10 V
ELEMENTS
PHASE UNDER TEST
POLARIZATION PHASE
ELEMENT TRIP
CHANNEL MAGNITUDE
CHANNEL
MAGNITUDE
MOD
ARG
MOD
ARG
50N/67N
IA
2 A
0º
VI
60 V
0º
NO
60 V
180º
YES
IB
0 A
0º
VII
0 V
0º
IC
0 A
0º
VIII
0 V
0º
Summary of Contents for Multilin G650
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Page 426: ...GEK 113285A G650 Generator Protection Control System A 31 APPENDIX A A 1 LOGIC OPERANDS A ...
Page 427: ...A 32 G650 Generator Protection Control System GEK 113285A A 1 LOGIC OPERANDS APPENDIXA A ...
Page 587: ...C 22 G650 Generator Protection Control System GEK 113285A C 8 ANALOG INPUTS APPENDIXC C ...
Page 639: ...G 2 G650 Generator Protection Control System GEK 113285A G 1 GE MULTILIN WARRANTY APPENDIXG G ...