Functional Description
3-3
For phase B and neutral ground fault current sensing:
I
I
num
B
Bn
2
n=1
num
=
∑
I
I
num
NGF
NGFn
2
n=1
num
=
∑
For phase A, B, and C current sensing:
I
I
num
A
An
2
n=1
num
=
∑
I
I
num
B
Bn
2
n=1
num
=
∑
I
I
num
C
Cn
2
n=1
num
=
∑
For single phase or 3 phase 3 wire sensing:
V
V
num
LL
n
2
n=1
num
=
∑
P
V I
num
n
n
n=1
num
=
⋅
⋅
∑
3
For 3 phase 4 wire sensing:
V
V
num
LN
n
2
n=1
num
=
∑
P
V I
num
n
n
n=1
num
=
⋅
⋅
∑
3
For phase balance:
V
V V
V
AB
A
A
B
B
2
=
+
+
V
2
V
V V
V
BC
B
B
C
C
2
=
+
+
V
2
V
V V
V
CA
C
C
A
A
2
=
+
+
V
2
Power Factor:
PF =
P
VA
where:
VA = V I
B
⋅
Power Angle:
φ
= cos (PF)
-1
Reactive Current:
I = I
sin
R
B
⋅
φ
Reverse Power:
P = 3 V
I
cos
R
AB
B
⋅
⋅
⋅
φ
I
NGF
:
Neutral Ground Fault
Содержание BE3-GPR
Страница 15: ...General Information 1 8 ...
Страница 16: ...General Information 1 9 Figure 1 2 Time Characteristic Curve S1 Short Inverse 99 1369 Similar to ABB CO 2 ...
Страница 17: ...General Information 1 10 Figure 1 3 Time Characteristic Curve S2 Short Inverse 99 1595 Similar To GE IAC 55 ...
Страница 18: ...General Information 1 11 Figure 1 4 Time Characteristic Curve L1 Long Inverse 99 1369 Similar to ABB CO 5 ...
Страница 19: ...General Information 1 12 ...
Страница 20: ...General Information 1 13 Figure 1 5 Time Characteristic Curve L2 Long Inverse 99 1594 Similar To GE IAC 66 ...
Страница 21: ...General Information 1 14 Figure 1 6 Time Characteristic Curve D Definite Time 99 1371 Similar To ABB CO 6 ...
Страница 22: ...General Information 1 15 Figure 1 7 Time Characteristic Curve M Moderately Inverse 99 1372 Similar to ABB CO 7 ...
Страница 23: ...General Information 1 16 Figure 1 8 Time Characteristic Curve I1 Inverse Time 99 1373 Similar to ABB CO 8 ...
Страница 24: ...General Information 1 17 Figure 1 9 Time Characteristic Curve I2 Inverse Time 99 1597 Similar to GE IAC 51 ...
Страница 25: ...General Information 1 18 Figure 1 10 Time Characteristic Curve V1 Very Inverse 99 1374 Similar to ABB CO 9 ...
Страница 26: ...General Information 1 19 Figure 1 11 Time Characteristic Curve V2 Very Inverse 99 1596 Similar to GE IAC 53 ...
Страница 29: ...General Information 1 22 Figure 1 14 Time Characteristic Curve A Standard Inverse 99 1621 ...
Страница 30: ...General Information 1 23 Figure 1 15 Time Characteristic Curve B Very Inverse 99 1376 ...
Страница 31: ...General Information 1 24 Figure 1 16 Time Characteristic Curve C Extremely Inverse 99 1377 ...
Страница 32: ...General Information 1 25 Figure 1 17 Time Characteristic Curve G Long Time Inverse 99 1622 ...
Страница 42: ...Functional Description 3 7 Figure 3 3 Selection Menu Sheet 1 of 6 ...
Страница 43: ...Functional Description 3 8 Figure 3 4 Selection Menu Sheet 2 of 6 ...
Страница 44: ...Functional Description 3 9 Figure 3 5 Selection Menu Sheet 3 of 6 ...
Страница 45: ...Functional Description 3 10 Figure 3 6 Selection Menu Sheet 4 of 6 ...
Страница 46: ...Functional Description 3 11 Figure 3 7 Selection Menu Sheet 5 of 6 ...
Страница 47: ...Functional Description 3 12 Figure 3 8 Selection Menu Sheet 6 of 6 ...
