Name
Type
Description
START
BOOLEAN
Start (common AC and DC side of exciter)
STARTDC
BOOLEAN
Start for DC side of exciter
STARTAC
BOOLEAN
Start for AC side of exciter
ALARM
BOOLEAN
Alarm
ERROR
BOOLEAN
Error
ERRSTAT
INTEGER
Error indication
RAVE
REAL
Measured resistance to earth in Ohm at inj freq
XAVE
REAL
Measured reactance to earth in Ohm at inj freq
FREQU
REAL
Measured frequency of injected voltage into rotor
RFAULT
REAL
Estimated fault resistance in Ohm
ZREF
INTEGER
Selected reference impedance number
ZREFRE
REAL
Used reference impedance real part in Ohm
ZREFIM
REAL
Used reference impedance imaginary part in Ohm
URMSSTAT
BOOLEAN
RMS voltage status, TRUE when > ULimRMS
7.8.7
Settings
Table 127:
ROTIPHIZ Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation On / Off
RTrip
100 - 100000
Ohm
1
1000
Trip limit of fault resistance in Ohm
RAlarm
100 - 1000000
Ohm
1
10000
Alarm limit of fault resistance in Ohm
tAlarm
0.00 - 600.00
s
1.00
30.00
Alarm time delay
FactACLim
0.01 - 2.00
-
0.01
0.25
Scale factor for rotor earth fault on AC side
of exciter
tTripAC
0.000 - 60.000
s
1.000
10.000
Time delay for trip on AC side of exciter
ULimRMS
1 - 1000
V
1
100
RMS voltage level
Table 128:
ROTIPHIZ Group settings (advanced)
Name
Values (Range)
Unit
Step
Default
Description
FreqInjected
75.000 - 250.000
Hz
0.001
113.000
Injected frequency
1MRK502052-UEN B
Section 7
Impedance protection
283
Technical manual
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