Directional Elements (67P, 67N, 67G, 67Sg); Element - GE Multilin F650 Instruction Manual

9.12 DIRECTIONAL ELEMENTS (67P, 67N, 67G, 67SG)

9.12DIRECTIONAL ELEMENTS (67P, 67N, 67G, 67SG)
In order to test directional units in the relay, instantaneous trips will be commanded.
Two points will be tested, per phase, test element.
The factory default configuration of the relay makes the overcurrent elements be supervised by directional units. 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.
Activate only protection elements 50PH and 67P and set the relay as follows:
67P Settings
Function
MTA
Direction
Block Logic
Pol V Threshold
Configure one of the outputs to be activated only by unit 50PH.
Apply the following tests:
ELEMENTS
50PH/67P
Activate only protection elements 50N and 67N and set the relay as follows:
67N Settings
Function
MTA
9
Direction
Polarization
Block Logic
Pol V Threshold
Configure one of the outputs to be activated only by unit 50G.
9-14
ENABLED
45 Deg
FORWARD
PERMISSION
30 V
PHASE UNDER TEST POLARIZATION PHASE
CHANNE MAGNITUDE CHANNEL
L
MOD ARG
IA 2 A 0º VIII
IB 2 A 0º VI
IC 2 A 0º VII
ENABLED
-45 Deg
FORWARD
VO
PERMISSION
10 V
F650 Digital Bay Controller
50PH Settings
Function
Input
Pickup Level
Trip Delay
Reset Delay
ELEMENT TRIP
MAGNITUDE
MOD ARG
60 V 0º NO
60 V 180º YES
60 V 0º NO
60 V 180º YES
60 V 0º NO
60 V 180º YES
50N Settings
Function
Input
Pickup Level
Trip Delay
Reset Delay
9 COMMISSIONING
9.12.1 67P ELEMENT
ENABLED
PHASOR (DFT)
0.50 A
0.30
0.00
9.12.2 67N ELEMENT
ENABLED
PHASOR (DFT)
0.50 A
0.30
0.00
GE Multilin