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1MAC050144-MB C
Section 4
Protection functions
615 series ANSI
193
Technical Manual
4.1.6.13
Technical data
Table 177: 67/51N and 67/50N Technical data
4.1.6.14
Technical revision history
Table 178: 67/50N Technical revision history
Table 179: 67/51N Technical revision history
Characteristic
Value
Pickup accuracy
Depending on the frequency of the current
measured: f
n
±2Hz
67/51N and 67/50N-1
Current:
±1.5% of the set value or ±0.002 x I
n
Voltage
±1.5% of the set value or ±0.002 x V
n
Phase angle:
±2°
67/50N-2
Current:
±1.5% of the set value or ±0.002 x I
n
(at currents in the range of 0.1…10 x I
n
)
±5.0% of the set value
(at currents in the range of 10…40 x I
n
)
Voltage:
±1.5% of the set value or ±0.002 x V
n
Phase angle:
±2°
Pickup time
12
1.
Measurement mode
= default (depends on stage), current before fault = 0.0 x I
n
, f
n
= 60 Hz, ground-fault
current 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
Minimum
Typical
Maximum
67/50N-2 and 67/51N
and 67/50N-1:
I
Fault
= 2 x set
Pickup
value
61 ms
64 ms
66 ms
Reset time
< 40 ms
Reset ratio
Typical 0.96
Retardation time
< 30 ms
Trip time accuracy in definite time mode
±1.0% of the set value or ±20 ms
Trip time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3
3. Maximum
Pickup value
= 2.5 x I
n
,
Pickup value
multiples in range of 1.5 to 20
Suppression of harmonics
RMS: No suppression
DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
Technical revision
Change
B
Maximum value changed to 180 deg for the
Max
forward angle
setting
Technical revision
Change
B
Maximum value changed to 180 deg for the
Max
forward angle
setting.
Pickup value
step changed to 0.005
Содержание 615 Series ANSI
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Страница 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Страница 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Страница 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
Страница 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
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