VAMP 259 - Supporting Functions; Inrush Current Detection (68); Disturbance Recorder (DR); Transformer Supervision

9.4 Supporting functions
9 Technical data
Technical description
292
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VM259.EN007
9.4. Supporting functions
9.4.1. Inrush current detection (68)
Settings:
- Setting range 2.Harmonic
10 – 100 %
- Operating time
0.05** – 300.00 s (step 0.01 s)
**) This is the instantaneous time i.e. the minimum total operational time including the fault
detection time and operation time of the trip contacts.
9.4.2. Disturbance recorder (DR)
The operation of disturbance recorder depends on the following settings. The
recording time and the number of records depend on the time setting and
the number of selected channels.
Disturbance recorder (DR)
Mode of recording:
Saturated / Overflow
Sample rate:
- Waveform recording
- Trend curve recording
32/cycle, 16/cycle, 8/cycle
10, 20, 200 ms
1, 5, 10, 15, 30 s
1 min
Recording time (one record)
0.1 s – 12 000 min
(must be shorter than MAX time)
Pre-trigger rate
0 – 100%
Number of selected channels
0 – 12
9.4.3. Transformer supervision
Current transformer supervision
Pick-up current
0.00 – 10.00 x In
Definite time function:
DT
- Operating time
0.06 – 600.00 s (step 0.02 s)
Reset time
<60 ms
Reset ratio Imax>
0.97
Reset ratio Imin<
1.03
Inaccuracy:
- Activation
±3% of the set value
- Operating time at definite time function
±1% or ±30 ms
Voltage transformer supervision
Pick-up setting U2>
0.0 – 200.0 %
Pick-up setting I2<
0.0 – 200.0 %
Definite time function:
DT
- Operating time
0.06 – 600.00 s (step 0.02 s)
Reset time
<60 ms
Reset ratio
3% of the pick-up value
Inaccuracy:
- Activation U2>
±1%-unit
- Activation I2<
±1%-unit
- Operating time at definite time function
±1% or ±30 ms