ABB Relion 650 Series REB650 Technical Manual page 556

Busbar protection
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Section 19
Time inverse characteristics
550
GUID-A9898DB7-90A3-47F2-AEF9-45FF148CB679 V1 EN
Figure 243:
Inverse curve C characteristic of overvoltage protection
1MRK 505 288-UEN A
Technical manual

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