ABB RELION 615 Series Product Manual page 47

Transformer Protection and Control
RET615
Product version: 5.0 FP1
Condition and supervision functions
Table 57. Circuit-breaker condition monitoring (SSCBR)
Characteristic
Current measuring accuracy
Operate time accuracy
Travelling time measurement
Table 58. Fuse failure supervision (SEQSPVC)
Characteristic
1)
Operate time
1) Includes the delay of the signal output contact, f
measurements
Table 59. Runtime counter for machines and devices (MDSOPT)
Description
Motor runtime measurement accuracy
1) Of the reading, for a stand-alone relay, without time synchronization
ABB
NPS function
Delta function
= 50 Hz, fault voltage with nominal frequency injected from random phase angle, results based on statistical distribution of 1000
n
1)
Value
±1.5% or ±0.002 × I
n
(at currents in the range of 0.1...10 × I
±5.0%
(at currents in the range of 10...40 × I
±1.0% of the set value or ±20 ms
+10 ms / -0 ms
Value
Neg Seq voltage
U = 1.1 × set
Fault
Lev
Neg Seq voltage
U = 5.0 × set
Fault
Lev
Voltage change rate <30 ms
ΔU = 1.1 × set
Voltage change rate <24 ms
ΔU = 2.0 × set
Value
±0.5%
1MRS756891 M
)
n
)
n
<33 ms
<18 ms
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