Name Type Values (Range) Unit Description
Frequency gradient FLOAT32 -10.00...10.00 Hz/s Frequency gradient
Conductance Yo FLOAT32 -1000.00...1000.
00
mS Conductance Yo
Susceptance Yo FLOAT32 -1000.00...1000.
00
mS Susceptance Yo
Angle VG - IG FLOAT32 -180.00...180.00 deg Angle residual voltage -
residual current
Angle VBC - IA FLOAT32 -180.00...180.00 deg Angle phase B to phase C
voltage - phase A current
Angle VCA - IB FLOAT32 -180.00...180.00 deg Angle phase C to phase A
voltage - phase B current
Angle VAB - IC FLOAT32 -180.00...180.00 deg Angle phase A to phase B
voltage - phase C current
Angle VG2 - IG2 FLOAT32 -180.00...180.00 deg Angle residual voltage -
residual current (b)
Angle VBC2 - IA2 FLOAT32 -180.00...180.00 deg Angle phase B to phase C
voltage - phase A current (b)
Angle VCA2 - IB2 FLOAT32 -180.00...180.00 deg Angle phase C to phase A
voltage - phase B current (b)
Angle VAB2 - IC2 FLOAT32 -180.00...180.00 deg Angle phase A to phase B
voltage - phase C current (b)
3.9 Non-volatile memory
The relay does not include any battery backup power. If the auxiliary power is lost, critical
information such as relay configuration and settings, events, disturbance recordings and
other critical data are saved to the relay’s non-volatile memory. The relay’s real-time
clock keeps running via a 48-hour capacitor backup.
• Up to 1024 events are stored. The stored events are visible in LHMI and WHMI only
• Recorded data
• Fault records (up to 128)
• Maximum demands
• Circuit breaker condition monitoring
• Latched alarm and trip LEDs' statuses
• Trip circuit lockout
• Counter values
• Load profile
1MAC059074-MB A Section 3
Basic functions
615 series ANSI 103
Technical Manual
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