Mitsubishi NF-S Series User Manual

64
Note: Load is assumed resistive, with elements conductive through 180°.
Table 7.5 Thyristor Circuits and Current Formats
Fig. 7.13 AC- and DC-side Protectors for Thyristors Fig. 7.14 Fault-Current Flow
Circuit No. I Circuit No. II Circuit No. III Circuit No. IV
Element average current
Element RMS current
Average DC current
RMS current
RMS current
Current
waveform
Current
waveform
Circuit diagram
Current flow
MCCB1MCCB2
π
I
P
2
I
P
2
I
P
2
I
P
π
I
P
π
I
P
π
I
P
6
+
(6 0.552 I
P
)
I
P
1
4π
M3
3
+
(6 2.45 I
F
)
I
F
π
1
2π
M3
3
+
(6 0.817 I
D
)
I
D
1
3
π
2π
M3
I
F
or
2I
F
2I
F
3I
F
2
π
I
F
2
π
I
D
or
2
π
I
F
4
π
I
D
or
M2
π
I
F
(6 2.22 I
F
)
2M2
π
I
D
(6 1.11 I
D
)
or
2
+ I
F
6 3I
F
π
1
4π
3M3
2
+ I
D
6 I
D
1
3
π
4π
3M3
or
I
e
2
π
I
D
or
M2
π
I
F
2M2
π
I
D
or
M2
π
I
F
2M2
π
I
D
or
(A)
(A)
(A)
(A)
I
F
I
e
I
D
I
B
(A)
I
B
Load
MCCB1
MCCB1
MCCB2
Load
MCCB1
MCCB2
Load
MCCB1
MCCB2
Load
I
P

I
P
I
P
I
P
I
P
I
P
I
P
I
P
Load
MCCB1
MCCB2
Load
Fault
element

Mitsubishi NF-S Series Specifications

General

Brand	Mitsubishi
Model	NF-S Series
Category	Circuit breakers
Language	English