Nonvolatile Memory - ABB RELION Series Technical Manual

Section 3
Basic functions
3.8
76
Name Type
Voltage U31B FLOAT32
Voltage UoB FLOAT32
Voltage Zro-SeqB FLOAT32
Voltage Ps-SeqB FLOAT32
Voltage Ng-SeqB FLOAT32
PTTR thermal level FLOAT32
PDNSPTOC1 rat. FLOAT32
I2/I1
Frequency FLOAT32
Frequency gradient FLOAT32
Conductance Yo FLOAT32
Susceptance Yo FLOAT32
Angle Uo - Io FLOAT32
Angle U23 - IL1 FLOAT32
Angle U31 - IL2 FLOAT32
Angle U12 - IL3 FLOAT32
Angle UoB - IoB FLOAT32
Angle U23B - IL1B FLOAT32
Angle U31B - IL2B FLOAT32
Angle U12B - IL3B FLOAT32

Nonvolatile 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 nonvolatile memory. The
relay's real-time clock keeps running via a 48-hour capacitor backup.
Values (Range) Unit
0.000...4.000 xUn
0.000...4.000 xUn
0.000...4.000 xUn
0.000...4.000 xUn
0.000...4.000 xUn
0.00...99.99
0.00...999.99 %
30.00...80.00 Hz
-10.00...10.00 Hz/s
-1000.00...1000. mS
00
-1000.00...1000. mS
00
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
1MRS758755 A
Description
Phase C to phase A
voltage (b)
Residual voltage (b)
Zero sequence voltage
(b)
Positive sequence
voltage (b)
Negative sequence
voltage (b)
PTTR calculated
temperature of the
protected object relative
to the operate level
PDNSPTOC1 ratio I2/I1
Frequency
Frequency gradient
Conductance Yo
Susceptance Yo
Angle residual voltage -
residual current
Angle phase B to phase C
voltage - phase A current
Angle phase C to phase A
voltage - phase B current
Angle phase A to phase B
voltage - phase C current
Angle residual voltage -
residual current (b)
Angle phase B to phase C
voltage - phase A current
(b)
Angle phase C to phase A
voltage - phase B current
(b)
Angle phase A to phase B
voltage - phase C current
(b)
REC615 and RER615
Technical Manual