VAMP 59 - Inrush Current Detection (68); Transformer Supervision

Technical description
9 Technical data
9.4 Supporting functions
VM59.EN001
VAMP 24h support phone +358 (0)20 753 3264
203
9.4.2. 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.
9.4.3. Transformer supervision
Current transformer supervision
Pick-up current
0.00 – 10.00 x I
N
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