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4.5.4.9
Technical data
Table 545:
47 Technical data
Characteristic
Value
Operation accuracy
Depending on the frequency of the voltage
measured: f
n
±1.5% of the set value or ±0.002 × V
n
Pickup time
1)2)
Minimum
Typical
Maximum
V
Fault
= 1.1 × set
Pickup
value
V
Fault
= 2.0 × set
Pickup
value
33 ms
24 ms
35 ms
26 ms
37 ms
28 ms
Reset time
Typically 40 ms
Reset ratio
Typically 0.96
Retardation time
<35 ms
Trip time accuracy in definite time mode
±1.0% of the set value or ±20 ms
Suppression of harmonics
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Negative-sequence voltage before fault = 0.0 × V
n
, f
n
= 50 Hz, negative-sequence overvoltage with nominal
frequency injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
4.5.4.10
Technical revision history
Table 546:
NSPTOV Technical revision history
Technical revision
Change
B
Internal change
C
Internal improvement.
D
Internal improvement.
4.5.5
Positive-sequence undervoltage protection 47U, 27PS
4.5.5.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Positive-sequence undervoltage
protection
PSPTUV
U1<
47U, 27PS
Section 4
1MAC059074-MB A
Protection functions
636
615 series ANSI
Technical Manual
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