Nonvolatile Memory - ABB RELION REX640 Technical Manual

1MRS759142 C
3.10
REX640
Technical Manual
Name Type
Frequency gradient:2 FLOAT32
Frequency:3 FLOAT32
Frequency gradient:3 FLOAT32
Conductance Yo FLOAT32
Susceptance Yo FLOAT32
Angle Uo:1 - Io:1 FLOAT32
Angle U23:1- IL1:1 FLOAT32
Angle U31:1 - IL2:1 FLOAT32
Angle U12:1 - IL3:1 FLOAT32
Angle Uo:2 - Io:2 FLOAT32
Angle U23:2 - IL1:2 FLOAT32
Angle U31:2 - IL2:2 FLOAT32
Angle U12:2 - IL3:2 FLOAT32
Angle Uo:3 - Io:3 FLOAT32
Angle U23:3 - IL1:3 FLOAT32
Angle U31:3 - IL2:3 FLOAT32
Angle U12:3 - IL3:3 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
-10.00...10.00 Hz/s
0.00...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
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
-180.00...180.00 deg
Section 3
Basic functions
Description
Frequency gradient (2)
Frequency gradient (3)
Frequency gradient (3)
Conductance Yo
Susceptance Yo
Angle residual voltage (1)
- residual current (1)
Angle phase B to phase C
voltage (1) - phase A
current (1)
Angle phase C to phase A
voltage (1) - phase B
current (1)
Angle phase A to phase B
voltage (1) - phase C
current (1)
Angle residual voltage (2)
- residual current (2)
Angle phase B to phase C
voltage (2) - phase A
current (2)
Angle phase C to phase A
voltage (2) - phase B
current (2)
Angle phase A to phase B
voltage (2) - phase C
current (2)
Angle residual voltage (3)
- residual current (3)
Angle phase B to phase C
voltage (3) - phase A
current (3)
Angle phase C to phase A
voltage (3) - phase B
current (3)
Angle phase A to phase B
voltage (3) - phase C
current (3)
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