4.3.6.11 Technical data
Table 715: HIxPDIF Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the current
measured: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time
1, 2
Minimum Typical Maximum
I
Fault
= 2.0 × set
Start
value
8 ms 11 ms 19 ms
I
Fault
= 10 × set
Start
value
7 ms 9 ms 11 ms
Reset time Typically <40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
1
Measurement mode
= default (depends on stage), current before fault = 0.0 × I
n
, f
n
= 50 Hz, fault
current with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements.
2
Measured with static signal output (SSO).
1MRS759142 F Protection functions
REX640
Technical Manual
787
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