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developed innovative technology for high-impedance fault detection with over ten years
of research resulting in many successful field tests.
5.4.6
Signals
Table 690:
HIZ Input signals
Name
Type
Default
Description
IG
SIGNAL
0
Ground current measured using SEF CT
BLOCK
BOOLEAN
0=False
Block signal for activating the blocking mode
CB_CLOSED
BOOLEAN
0=False
Circuit Breaker Closed input
CB_OPEN
BOOLEAN
0=False
Circuit Breaker Open input
Table 691:
HIZ Output signals
Name
Type
Description
TRIP
BOOLEAN
Trip
5.4.7
Settings
Table 692:
HIZ Group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Security Level
1...10
1
5
Security Level
Table 693:
HIZ Non group settings (Basic)
Parameter
Values (Range)
Unit
Step
Default
Description
Operation
1=enable
5=disable
1=enable
Operation Disable / Enable
System type
1=Grounded
2=Ungrounded
1=Grounded
System Type
1MAC059074-MB A
Section 5
Protection related functions
615 series ANSI
793
Technical Manual
Содержание Relion 615 series
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