ABB RER620 Product Manual page 31

Condition monitoring functions
—
Table 47. 52CM technical data
Characteristic
Current measuring accuracy
Operate time accuracy
Travelling time measurement
—
Table 48. Fuse failure/Loss-of potential technical data
Characteristic
Trip time
1)
NPS function:
Delta function:
1) Includes the delay of the signal output contact, f
dom phase angle, results based on statistical distribution of 1000 measurements
—
Table 49. 59N technical data
Characteristic
Operation accuracy
Pickup time V = 1.1 x set Pickup value
1) 2)
Fault
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Suppression of harmonics
1) Zero sequence voltage before fault = 0.0 x Vn, fn = 60 Hz, zero sequence voltage with nominal frequency in-
jected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Value
±1.5% or ±0.002 x I
n
(at currents in the range of 0.1 to 10 x I
±5.0%
(at currents in the range of 0.1 to 40 x I
±1.0% of the set value or ±20 ms
+10 ms / -0 ms
Value
V = 1.1 x set Neg Seq
Fault
voltage Lev
V = 5.0 x set Neg Seq
Fault
voltage Lev
∆U = 1.1 x set Voltage change rate
∆U = 2.0 x set Voltage change rate
= 60 Hz, fault voltage with nominal frequency injected from ran-
n
Value
Depending on the frequency of the current measured: f
±1.5% of the set value or ±0.002 x V
Minimum
29 ms
< 40 ms
Typical 0.96
< 35 ms
±1.0% of the set value or ±20 ms
DFT: -50dB at f = n x f , where n = 2, 3, 4, 5,...-
n
)
n
)
n
< 33 ms
< 18 ms
<30 ms
<24 ms
±2Hz
n
n
Typical
31 ms
31
Maximum
32 ms