Beijer Electronics BFI-H3 - Fuses, Cable Dimensions and Power Loses

Beijer Electronics Frequency Inverter BFI-H3 KI00363D 2021-07
www.beijerelectronics.com 6 (32)
4.5 Fuses, cable dimensions and power loses
380-480V ±10% - 3 Phase Input – 3 Phase Output
Output
Power
[kW]
BFI-H3
model
Nominal Input
Current, IP66
and IP55
Fuse or
MCB
(type B)
Supply
Cable
Size, A1
40°C
Supply
Cable
Size,
E 30°C
Nominal
Output
Current
Motor
Cable
Size,
E 30°C
Max
Motor
Cable
Length
Power
losses
Amps
Amps
mm
2
mm
2
Amps
mm
2
m
W
0.75
0022
1,8
6
1.5
1.5
2.2
1.5
100
15
1.5
0041
3,3
6
1.5
1.5
4.1
1.5
100
30
2.2
0058
4,7
6
1.5
1.5
5.8
1.5
100
44
4
0095
7,7
10
1.5
1,5
9.5
1.5
100
80
5.5
0140
11,4
16
2,5
2,5
14
1.5
100
110
7.5
0180
15
25
4
2,5
18
2,5
100
150
11
0240
21
25
4
2,5
24
4
100
220
15
0300
26
32
6
4
30
6
100
300
18,5
0390
35
50
16
6
39
10
100
370
22
0460
42
50
16
6
46
16
100
440
30
0610
53
63
35
16
61
16
100
600
37
0720
63
80
35
16
72
16
100
720
45
0900
80
100
70
25
90
35
100
900
55
1100
126
160
70
35
110
35
100
1650
75
1500
165
200
120
50
150
50
100
2250
90
1800
192
200
150
95
180
95
100
2700
110
2020
211
250
185
150
202
150
100
3300
132
2400
241
315
2x150
2x70
240
2*70
100
3900
160
3020
299
400
2x185
2x95
302
2x95
100
4800
200
3700
393 (4% choke)
500
370
100
6000
250
4500
479 (4% choke)
500
450
100
7500
NOTE
• The drive is protected against short-circuit from power output to protective earth for all rated cable lengths,
cable sizes and cable types.
• The maximum cable lengths stated here are based on hardware limitations and do NOT take into consideration
any requirements for compliance to any EMC standards.
• Maximum motor cable length stated applies to using a screened motor cable. When using an unscreened cable,
maximum cable length is increased by 50%. Using an output choke, the maximum cable length limited can be
increased by 100%
• The PWM output switching from any inverter when used with a long motor cable length can cause an increase
in the voltage at the motor terminals, depending on the motor cable length and inductance. The rise time and
peak voltage can affect the service life of the motor. Beijer recommend using an output choke for motor cable
lengths of 50m or more to ensure good motor service life.
• For IP20 Frame Size 8 the Vector Speed and Torque control modes may not operate correctly with long motor
cables and output filters. It is recommended to operate in V/F mode only for cable lengths exceeding 50m.
• For UL compliant installation, use Copper wire with a minimum insulation temperature rating of 70°C, UL Class
CC or Class J Fuses(exception: Eaton Bussmann FWP series must be used for size 6A & 6B IP20 models).
All recommended sizes of cable sizes and fuses are recommendations. National laws and
recommendations are to be considered.
Recommended choice of cable sizes and fuses follows DIN VDE 0100 paragraph 430
Appendix, motor cable is copper, way of wiring A1 and E is following SS 424 24 24 edition.
A1 means cable/conductors in some kind of duct in a maximum temperature of 40°C. E
means cable/conductors mounted on a ladder. Calculated at 30°C with 9 or several cables
(correction factor 0,78).