Fuji Electric RHC-D 690V Series, Руководство пользователя

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3.3.7 Tightening torque and wire size for devices applicable to the main circuit
(1) Tightening torque
Converter stack
Type Tightening torque (N•m)
RHC

-69DE
Input circuit
[L1/R, L2/S, L3/T]
Output circuit
[P(+), N(-)]
Grounding
terminals
[ G]
[R0, T0]
[R1, S1, T1]
[R3, T3]
[73A, 73C]
Control terminals
M3 screw M4 screw
132S
48 48 48 1.2 0.7 1.2
160S
200S
250S
280S
315S
355S
400S
450S
(2) Recommended wire size
Converter stack (Ambient temperature: 40°C)
RHC

-69DE
Main power input
[L1/R L2/S, L3/T],
Converter output
[P(+), N(-)]
Grounding
terminals
[ G]
(mm
2
)
[R0, T0]
[R1, S1, T1]
[R3, T3]
[73A, 73C]
(mm
2
)
Control
terminals
[DCF1,
DCF2]
(mm
2
)
MD
mode
LD
mode
Bus bar
sizes
(mm
2
)
Wire sizes
(mm
2
)
Bus bar
sizes
(mm
2
)
Wire sizes
(mm
2
)
132S -
t5x30
(150)
22
t4x40
(160)
22
22
2 1.25
160S 132S
38
38
200S 160S
60 - 200S
60
250S -
t10x30
(300)
t8x50
(400)
38
280S 250S
100 100 315S 280S
355S 315S
400S 355S
150 150 60
450S 400S
(Note 1) The wire size in the above table is for 1500 V MLFC (90
℃
) insulated wires.
(3) Rated current of Cu bus bars
“
Table 3.3-5” shows the rated currents of bus bars. However, if the ambient temperature of the cabinet is lower
than 40°C and in some other cases, the derating of the current must be considered.
[Precaution about the application of the current and capacity table of bus bars]
Select a bus bar based on a temperature of 70°C, which means a temperature rise of 30 K from an ambient
temperature of 40°C. If ambient temperature drops below 40°C, the value of temperature rise increases. Consider
a correction factor according to “Figure 3.3-14 Temperature correction factor.” In addition, the reduction rate of
the supplied current depends on the layout of bus bars. When supplying a large current, plan the current by
making reference to Figure 3.3-15
3-22