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Table 6 Protection characteristic parameters in other cases

From: Fault protection method of single-phase break for distribution network considering the influence of neutral grounding modes

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