Tests and Diagnostics
GARD 8000 SYS RFL Electronics
February 14, 2011 11-53 973.334.3100
Current Diff Relay Test definitions – Local Trips
Local Phase A, B, C, and Ground Active Trip
When red this indicates that the corresponding phase has an active trip. Green indicates the absence of
an active trip.
Current Diff Relay Test definitions – Current Differential Alarms
Current Diff Alarm Phase A, B, C, and Ground
When red this indicates that the corresponding phase has an active current differential alarm. Green
indicates the absence of a current differential alarm.
Current Diff Relay Test definitions – Remote 1 – 2 Trips
Remote 1 - 2 Phase A, B, C, and Ground Active Trip
When red this indicates that the corresponding phase has an active trip. Green indicates the absence of
an active trip
Current Diff Relay Test definitions – Local Currents
Phase A, B, C, and Ground current (Primary)
These indicate the current measured locally for each of the relay inputs. The measurements are in
A
RMS
and are referenced to the primary side of the CT.
Current Diff Relay Test definitions – Local Phase Sequence (deg)
Local Phase A, B, C, and Ground sequence
The system provides an indication of the relative phasing of the phase currents. The phasing is
reported relative to the phase A current (no voltages are applied to the relay, only currents). The data
is only valid when the system is in steady-state and there are currents applied to the relay.
The local currents will be displayed as 0º, 120º, 240º or “Error.”
Current Diff Relay Test definitions – Remote 1 – 2 Phase Sequence (deg)
Remote Phase A, B, C, and Ground sequence
The system provides an indication of the relative phasing of the phase currents. The phasing is
reported relative to the phase A current (no voltages are applied to the relay, only currents). The data
is only valid when the system is in steady-state and there are currents applied to the relay.
The remote currents will be displayed as 180º, 300º, 60º or “Error.”
Continued…….
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