Technical Data
4.10 Additional Functions
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
201
4.10 Additional Functions
Operational Measured Values
1)
at nominal frequency
Min / Max Report
Broken-wire Monitoring of Voltage Transformer Circuits
Fault Event Recording
Time Allocation
Voltages (phase-to-ground)
V
A-N
, V
B-N
, V
C-N
Voltages (phase-to-phase)
V
A-B
, V
B-C
, V
C-A
, V
SYN
V
N
, V
ph-N
, V
x
or V
0
Positive sequence component V
1
Negative sequence component V
2
in kV primary, in V secondary or in % of V
Nom
Range
Tolerance
1)
10 % bis 120 % von V
N
1,5 % vom Messwert, bzw. 0,5 % V
Nom
Frequency f in Hz
Range
Tolerance
1)
f
Nom
± 5 Hz
20 mHz
Synchronization Function see section (Synchronization Function)
Report of Measured Values with date and time
Reset automatic Time of day adjustable (in minutes, 0 to 1439 min) Time frame
and starting time adjustable (in days, 1 to 365 days, and ∞)
Manual Reset Using binary input
Using keypad
Via communication
Min/Max Values for Voltages: V
A-N
; V
B-N
; V
C-N
;
V
1
(Positive Sequence Component);
V
A-B
; V
B-C
; V
C-A
suitable for single-, double-pole broken-wire detection of voltage transformer circuits;
only for connection of phase-to-ground voltages
Recording of indications of the last 8 power system faults
Recording of indications of the last 3 power system ground faults
Resolution for Event Log (Operational Annuncia-
tions)
1 ms
Resolution for Trip Log (Fault Annunciations) 1 ms
Maximum Time Deviation (Internal Clock) 0.01 %
Battery Lithium battery 3 V/1 Ah, type CR 1/2 AA
Message „Battery Fault“ for insufficient battery charge
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