Nidec H300 - Output Circuit and Motor Protection; Cable Types and Lengths; Maximum Motor Cable Lengths (200 V Drives); Maximum Motor Cable Lengths (400 V Drives)

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HVAC Drive H300 93
Issue Number: 3
Fuse types
The fuse voltage rating must be suitable for the drive supply voltage.
Ground connections
The drive must be connected to the system ground of the AC supply.
The ground wiring must conform to local regulations and codes of
practice.
N
For information on ground cable sizes, refer to Table 4-12 Size 11E
ground connections on page 80.
4.8.1 Main AC supply contactor
The recommended AC supply contactor type for size 3 and 10 is AC1.
4.9 Output circuit and motor protection
The output circuit has fast-acting electronic short-circuit protection which
limits the fault current to typically no more than five times the rated
output current, and interrupts the current in approximately 20 µs. No
additional short-circuit protection devices are required.
The drive provides overload protection for the motor and its cable. For
this to be effective, Rated Current (00.020) must be set to suit the motor.
There is also provision for the use of a motor thermistor to prevent over-
heating of the motor, e.g. due to loss of cooling.
4.9.1 Cable types and lengths
Since capacitance in the motor cable causes loading on the output of the
drive, ensure the cable length does not exceed the values given in Table
4-15 to section 4-18.
Use 105 °C (221 °F) (UL 60/75 °C temp rise) PVC-insulated cable with
copper conductors having a suitable voltage rating, for the following
power connections:
• AC supply to external EMC filter (when used)
• AC supply (or external EMC filter) to drive
• Drive to motor
• Drive to braking resistor
Table 4-15 Maximum motor cable lengths (200 V drives)
Table 4-16 Maximum motor cable lengths (400 V drives)
Rated Current (00.020) must be set correctly to avoid a risk
of fire in the event of motor overload.
NOTE
WARNING
200 V Nominal AC supply voltage
Model
Maximum permissible motor cable length for each of the
following switching frequencies
2
kHz
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
03200066 65 m (210 ft)
50 m
(165 ft)
37 m
(120 ft)
03200080 100 m (330 ft)
75 m
(245 ft)
03200110 130 m (425 ft)
100 m
(330 ft)
03200127 200 m (660 ft)
150 m
(490 ft)
04200180
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
04200250
05200300 200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
06200500
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
06200580
07200750
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
07200940
07201170
08201490
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
08201800
09202160
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09202660
10203250
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10203600
400 V Nominal AC supply voltage
Model
Maximum permissible motor cable length for each of the
following switching frequencies
2
kHz
3
kHz
4
kHz
6
kHz
8
kHz
12
kHz
16
kHz
03400034 65 m (210 ft)
50 m
(165 ft)
37 m
(120 ft)
03400045 100 m (330 ft)
75 m
(245 ft)
03400062 130 m (425 ft)
100 m
(330 ft)
03400077
200 m (660 ft)
150 m
(490 ft)
03400104
03400123
04400185
200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
04400240
05400300 200 m (660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
06400380
200 m
(660 ft)
150 m
(490 ft)
100 m
(330 ft)
75 m
(245 ft)
50 m
(165 ft)
37 m
(120 ft)
06400480
06400630
07400790
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
07400940
07401120
08401550
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
08401840
09402210
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
09402660
10403200
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
62 m
(203 ft)
46 m
(151 ft)
10403610
11404370
250 m (820 ft)
187 m
(614 ft)
125 m
(410 ft)
93 m
(305 ft)
11404870
11405070