Table 196. Current circuit supervision for transformers (CTSRCTF) main settings
Parameter Function Value (Range) Step
Min operate current CTSRCTF 0.01...0.50 × I
n
0.01
Max operate current CTSRCTF 1.00...5.00 × I
n
0.01
Max Ng Seq current CTSRCTF 0.01...1.00 × I
n
0.01
Table 197. 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 198. Current transformer supervision for high-impedance protection scheme (HZCCxSPVC) main settings
Parameter
Function Value (Range) Step
Start value HZCCxSPVC 1.0...100.0 %I
n
0.1
Alarm delay time HZCCxSPVC 100...300000 ms 10
Alarm output mode HZCCxSPVC 1 = Non-latched
3 = Lockout
-
Table 199. Fuse failure supervision (SEQSPVC)
Characteristic
Value
Operate time
1)
NPS function U
Fault
= 1.1 × set
Neg Seq voltage
Lev
<33 ms
U
Fault
= 5.0 × set
Neg Seq voltage
Lev
<18 ms
Delta function ΔU = 1.1 × set
Voltage change rate
<30 ms
ΔU = 2.0 × set
Voltage change rate
<24 ms
1) Includes the delay of the signal output contact, f
n
= 50 Hz, fault voltage with nominal frequency injected from random phase angle, results based on statistical distribution of 1000
measurements
Table 200. Runtime counter for machines and devices (MDSOPT)
Description
Value
Motor runtime measurement accuracy
1)
±0.5%
1) Of the reading, for a stand-alone relay, without time synchronization
1MRS759144 A
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