Table 6 Protection characteristic parameters in other cases
Type | Ungrounded | Arc suppression coil grounded | Low resistance grounded | ||||||
|---|---|---|---|---|---|---|---|---|---|
UO(V) | ∆Iφ(A) | n1 | UO(V) | ∆Iφ(A) | n1 | UO(V) | ∆Iφ(A) | n1 | |
Single phase grounding | 5523.9 | 25.1 | 0.34 | 5482.7 | 5.2 | 0.86 | 5345.3 | 454.5 | 0.93 |
Two-phase short circuit | 16.3 | 21,607 | 1.04 | 141.7 | 21,607 | 1.04 | 2.0 | 21,607 | 1.04 |
Load disappearance | 23.8 | − 804.1 | 5426.7 | 216.4 | −804.1 | 5426.7 | 2.9 | −804.1 | 5426.7 |