/PERATING INSTRUCTIONS
3*
6
# ' #
4 %15!,
MIN
4IME OF THERMAL EQUILIBRIUM OF THE ROTOR
3ETTING RANGE
MIN TO
MIN
m
n
)").
2ATED CURRENT OF THE MOTOR REFERRED TO THE RATED CUR
RENT OF THE CURRENT TRANSFORMERS
3ETTING RANGE
TO
m
n
NW
-AX PERMISSIBLE NUMBER OF HOT STARTUPS IE AFTER
STEADY STATE OPERATION OF THE MOTOR
3ETTING RANGE
TO
m
NC NW
$IFFERENCE BETWEEN THE PERMISSIBLE NUMBER OF COLD
START UPS N
C
AND THE PERMISSIBLE NUMBER OF HOT
START UPS N
W
3ETTING RANGE
TO
n
K
Ç
&!#4/2
m
n
0ROLONGATION FACTOR OF THE TIME CONSTANT AT
STAND STILL REFERRED TO THE TIME CONSTANT DURING
RUNNING
3ETTING RANGE
TO
3ETTINGS FOR MEASURED VALUE MONITORING
ADDRESS BLOCK
4HE DIFFERENT MONITORING FUNCTIONS OF THE PROTECTIVE
RELAY ARE DESCRIBED IN 3ECTION 4HEY PARTLY
MONITOR THE RELAY ITSELF PARTLY THE STEADY STATE MEA
SURED VALUES OF THE TRANSFORMER CIRCUITS
4HE SENSITIVITY OF THE MEASURED VALUES MONITORING
CAN BE CHANGED IN BLOCK 4HE FACTORY SETTINGS ARE
SUFFICIENT IN MOST CASES )F PARTICULARLY HIGH OPERA
TIONAL ASYMMETRIES OF THE CURRENTS ARE EXPECTED OR
IF DURING OPERATION ONE OR MORE MONITORING FUNC
TIONS REACT SPORADICALLY THEN SENSITIVITY SHOULD BE
REDUCED
./4%
0REREQUISITE FOR CORRECT FUNCTION OF THE MEA
SURED VALUE MONITORS IS THE PROPER SETTING OF THE GEN
ERAL POWER SYSTEM DATA 3ECTION ESPECIALLY
THE PARAMETER CONCERNING THE EARTH CURRENT MATCH
ING FACTORS ADDRESSES AND
"EGINNING OF BLOCK
-EASURED VALUE SUPERVISION
-%!36!,5%
350%26)3)/.
2
6OLTAGE THRESHOLD PHASE PHASE ABOVE WHICH THE
SYMMETRY MONITORING IS EFFECTIVE REFER TO &IGURE
3MALLEST SETTING VALUE
,ARGEST SETTING VALUE
6
6
39-5THRES
6
n
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