ABB RER620 Product Manual page 23

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Table 24. 67/51P and 67/50P technical data
Description
67/51P, 67/50P-1
Operation accuracy
67/50P-2
Pickup time
1) 2)
I = 2.0 x set Pickup value 37 ms
Fault
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Trip time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode and Pol quantity = default, current before fault = 0.0 x I
random phase angle, results based on statistical distribution of 1000 measurements
Includes the delay of the signal output contact
2)
Maximum Pickup range = 2.5 x I , Pickup range multiples in range of 1.5 to 20
3)
n
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Table 25. 51N/G, 50N/G-1/2 & 50N/G-3 technical data
Description
Depending on the frequency of the current measured: f
51N/51G
Operation accuracy
50N-1/2, 50G-1/2
and
50N/G3
50N-3, 50G-3:
I = 2 x set Pickup value
Fault
Pickup time
1) 2) I = 10 x set Pickup value
Fault
50N-1, 50N-2, 50G-1, 50G-2
and 51N/51G:
I = 2 x set Pickup range
Fault
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Trip time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode = default (depends on stage), current before fault = 0.0 x I
based on statistical distribution of 1000 measurements
Includes the delay of the signal output contact
2)
Maximum Pickup range = 2.5 x I , Pickup range multiples in range of 1.5 to 20
3)
n
Value
Depending on the frequency of the current measured: f
Current:
±1.5% of the set value or ±0.002 x I
Voltage:
±1.5% of the set value or ±0.002 x U
Phase angle:
±2°
Current:
±1.5% of set value or ±0.002 x I
n
(at currents in the range of 0.1...10 x I
±5.0% of set value
(at currents in the range of 10...40 x I
Voltage:
±1.5% of the set value or ±0.002 x U
Phase angle:
±2°
Minimum
< 40 ms
Typical 0.96
< 35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50dB at f = n x f ,
n
where n = 2, 3, 4, 5,...-
, voltage before fault 1.0 x U
n
Value
±2Hz
n
±1.5% of the set value or ±0.002 x I
±1.5% of set value or ±0.002 x I
n
(at currents in the range of 0.1...10 x I
±5.0% of the set value
(at currents in the range of 10...40 x I
Minimum
16 ms
11 ms
22 ms
< 40 ms
Typical 0.96
< 30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms 3)
RMS: No suppression DFT: -50dB at f =
n x f , where n = 2, 3, 4, 5,...
n
Peak-to-Peak: No suppression
, f = 50 Hz, earth-fault current with nominal frequency injected from random phase angle, results
n n
±2Hz
n
n
n
)
n
)
n
n
Typical
40 ms
3)
, f = 50 Hz, fault current in one phase with nominal frequency injected from
n n
n
)
n
)
n
Typical
19 ms
12 ms
24 ms
23
Maximum
42 ms
Maximum
23 ms
14 ms
25 ms