RFL Electronics GARD 8000, Инструкция по эксплуатации

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Distance Relay Settings
GARD 8000 Distance Relay RFL Electronics Inc.
Description Range Units Step Default
Z1 extension block time
This is the time following breaker closing for when Zone 1
extension will become active. This prevents trip from an
overreaching zone following reclosing. Used for Zone 1 Extension
scheme.
0.05 - 300 s 0.01 10
Overreaching Zone
Determines which zone is used as overreaching Pilot zone (Z2 or
Z3).
Zone 2
Zone 3
- 1 Zone 2
Distance weak infeed logic output
Set whether to use weak infeed echo (echo), week infeed trip and
echo (ECHO+TRIP) or no weak infeed logic (None)
None
Echo
ECHO+TRI
P
- 1 None
Distance transient block enable
Enable Transient Block Logic for the overreaching permissive
pilot schemes (POTT, DCUB)
No - Yes - 1 No
Carrier fast start
This setting is applicable to Directional Comparison Blocking
(DCB) only and enables to select Carrier Start from non-
directional
phase and ground overcurrent elements, in addition to the reverse
blocking zone. The 50P-1, 50G-1 elements are utilized for this
function.
No - Yes - 1 No
67 Pilot Scheme
Selects the type of pilot scheme to use for the directional
overcurrent elements.
None
PUTT
DTT
POTT
DCUB
DCB - 1 DCB
67 Carrier send extend time
Sets the time delay for carrier send. Used with Permissive schemes
(PUTT, POTT, DCUB, DTT).
0 - 200 ms 10 50
67 extend time
Sets the coordination drop-out time delay for the carrier start
signal. Used with Blocking schemes (DCB).
0 - 50 ms 1 25
67 DCB coordination time
Sets the time delay for Directional Comparison Blocking (DCB)
trip signal. This is the amount of time the forward overcurrent
element zone will wait to receive a blocking carrier signal before
trip is released.
0 - 200 ms 10 50
67 Weak infeed logic output
Set whether to use weak infeed echo (echo), week infeed trip
and echo (ECHO+TRIP) or no weak infeed logic (None) for the
overcurrent directional comparison pilot schemes.
None
Echo
ECHO+TRI
P
- 1 None
67 transient block enable
Enable Transient Block Logic for the overcurrent directional
comparison pilot schemes.
No - Yes - 1 No
July 21, 2009 7-10 973.334.3100