Part 5: Review on Replacement of MR-J3-DU_ with MR-J4-DU_
5 - 55
7.3 Selection of Molded-case circuit breakers, fuses, magnetic contactors (example)
CAUTION
To prevent the converter unit and the drive unit from smoke and a fire, select a
molded-case circuit breaker which shuts off with high speed.
Always use one molded-case circuit breaker and one magnetic contactor with one
converter unit.
Since recommended products vary between MR-J3-DU and MR-J4-DU_, use the
recommended products of MR-J4-DU_.
7.3.1 MR-J3-DU_ Molded-case circuit breakers, fuses, magnetic contactors (recommended)
(1) For main circuit power supply
When using a fuse instead of the molded-case circuit breaker, use the one having the specifications given in
this section.
Converter unit
Drive unit
Molded-case circuit breaker
Fuse
Magnetic
contactor
(Note)
Frame, rated current
Voltage AC
[V]
Class
Current
[A]
Voltage
AC [V]
Power factor
improving DC reactor
is not used
Power factor
improving DC reactor
is used
MR-J3-CR55K
MR-J3-DU30K_
400 A frame 250 A
225 A frame 225 A
240
500
300
S-N150
MR-J3-DU37K_
400 A frame 300 A
400 A frame 300 A
600
S-N180
MR-J3-DU30K_4
225 A frame 125 A
225 A frame 125 A
600Y/347
T
250
600
S-N95
MR-J3-CR55K4
MR-J3-DU37K_4
225 A frame 150 A
225 A frame 150 A
300
S-N125
MR-J3-DU45K_4
225 A frame 175 A
225 A frame 175 A
400
S-N150
MR-J3-DU55K_4
400 A frame 225 A
225 A frame 225 A
450
S-N180
Note. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of contacts)
of 80 ms or less.
7.3.2 MR-J4-DU_ Molded-case circuit breakers, fuses, magnetic contactors (recommended)
(1) For main circuit power supply
When using a fuse instead of the molded-case circuit breaker, use the one having the specifications given in
this section.
Converter unit
Drive unit
Molded-case circuit breaker (Note 1)
Fuse
Magnetic
contactor
(Note 2)
Frame, rated current
Voltage AC
[V]
Class
Current
[A]
Voltage
AC [V]
Power factor
improving DC reactor
is not used
Power factor
improving DC reactor
is used
MR-CR55K
MR-J4-DU30K_
225 A frame 175 A
225 A frame 150 A
240 T
300
300
S-N150
MR-J4-DU37K_
225 A frame 225 A
225 A frame 175 A
400
S-N180
MR-CR55K4
MR-J4-DU30K_4
100 A frame 100 A
100 A frame 80 A
480 T
175
600
S-N65
MR-J4-DU37K_4
125 A frame 125 A
100 A frame 100 A
200
S-N80
MR-J4-DU45K_4
225 A frame 150 A
125 A frame 125 A
300
S-N95
MR-J4-DU55K_4
225 A frame 175 A
225 A frame 150 A
300
S-N150
Note 1. For compliance with the IEC/EN/UL/CSA standard, refer to "MR-CV_/MR-CR55K_/MR-J4-DU_(-RJ) instruction manual".
2. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of
contacts) of 80 ms or less.
Содержание Melservo MR-J3-100B
Страница 17: ...8 MEMO ...
Страница 18: ...Part 1 Summary of MR J3 MR J3W Replacement 1 1 Part 1 Summary of MR J3 MR J3W Replacement ...
Страница 145: ...Part 3 Review on Replacement of MR J3 _B_ with MR J4 _B_ 3 48 MEMO ...
Страница 146: ...Part 4 Replacement of MR J3W _B with MR J4W2 _B 4 1 Part 4 Review on Replacement of MR J3W _B with MR J4W2 _B ...
Страница 195: ...Part 4 Replacement of MR J3W _B with MR J4W2 _B 4 50 MEMO ...
Страница 196: ...Part 5 Review on Replacement of MR J3 DU_ with MR J4 DU_ 5 1 Part 5 Review on Replacement of MR J3 DU_ with MR J4 DU_ ...
Страница 277: ...Part 5 Review on Replacement of MR J3 DU_ with MR J4 DU_ 5 82 MEMO ...
Страница 278: ...Part 6 Common Reference Material 6 1 Part 6 Common Reference Material ...
Страница 418: ...Part 7 Review on Replacement of Motor 7 1 Part 7 Review on Replacement of Motor ...
Страница 564: ...Part 9 Startup Procedure Manual 9 1 Part 9 Startup Procedure Manual ...
Страница 567: ...Part 9 Startup Procedure Manual 9 4 MEMO ...
Страница 589: ...L NA 03127ENG C ...