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