16
1MRS 751107-MUM
Protection Relay
Operator’s Manual
REX 521
3.2.1. Measurement menu
The contents of the measurement menu depend on the relay configuration.
If a measurement view is selected, it remains active after the time-out period. The
same is true with the manual control view. From other views, the display reverts to
idle mode at the same time as the backlight is switched off.
• If energy measurements are present, accumulated values can be reset by pressing
the [C] button for 2 s.
Table 3.2.1-1 Measurement view
Function block Measurand View
3I
Io
IL1 (A)
IL2 (A)
IL3 (A)
Io (A)
Uo
3U
3U_B **
f
Uo (V)
U1 (kV)
U2 (kV)
U3 (kV)
U12 (kV)
U23 (kV)
U31 (kV)
U12s (kV)
U23s (kV)
U31s (kV)
f (Hz)
Io-A 5.0
IL3-A 25.0
IL2-A 25.0
Meas_val_b
THD-% 0.0
Measured values
IL1-A 25.0
IL3-A 25.0
IL2-A 25.0
Dem_val_b
Demand values
IL1-A 25.0
Meas_val_Uo_b
f-Hz 50.00
U31s-kV 0.50
U23s-kV 0.50
U12s-kV 0.50
U31-kV 0.50
U23-kV 0.50
U12-kV 0.50
U3-kV 0.50
U2-kV 0.50
U1-kV 0.50
Measured values
Uo-V 0
**
**
**
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