60
R E F61 5 A N S I 5.0 FP1
FEED ER P R OT EC T I O N A N D CO N T R O L
Condition monitoring and supervision functions
—
Table 97. Circuit-breaker condition monitoring (SSCBR)
Characteristic
Value
Current measuring accuracy
±1.5% or ±0.002 × I
n
(at currents in the range of 0.1…10 × I
n
)
±5.0%
(at currents in the range of 10…40 × I
n
)
Operate time accuracy
±1.0% of the set value or ±20 ms
Travelling time measurement
+10 ms / -0 ms
—
Table 98. Current circuit supervision (CCSPVC)
Characteristic
Value
Operate time
1)
< 30 ms
1) Including the delay of the output contact
—
Table 99. Current circuit supervision (CCSPVC) main settings
Parameter
Function
Value (range)
Step
Start value
CCSPVC
0.05...0.20 × I
n
0.01
Max operate current
CCSPVC
1.00...5.00 × I
n
0.01
—
Table 100. Current transformer supervision for high-impedance protection scheme (HZCCxSPVC)
Characteristic
Value
Operation accuracy
Depending on the frequency of the current measured: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Reset time
< 40 ms
Reset ratio
Typically 0.96
Retardation time
< 35 ms
Operate time accuracy in definite time mode
±1.0% of the set value or ±20 ms
—
Table 101. CT supervision for high-impedance protection scheme (HZCxSPVC) main settings
Parameter
Function
Value (range)
Step
Start value
HZCCASPVC
HZCCBSPVC
HZCCCSPVC
1.0...100.0 %I
n
0.1
Alarm delay time
HZCCASPVC
HZCCBSPVC
HZCCCSPVC
100...300000 ms
10
Alarm output mode
HZCCASPVC
HZCCBSPVC
HZCCCSPVC
1=Non-latched
3=Lockout
-
