Section 2: Installation of the frequency converter
2.3. Connecting the power circuit
•
The AFC200 frequency converter is powered by a single phase voltage
230 VAC, 50 Hz.
•
Connect the frequency converter to electric motor using the shortest pos-
sible symmetrical shielded cable.
•
Do not use contactors and circuit breakers on the output side of the con-
verter that would disconnect the system during operation - see section
2.5.
•
Figure 2.3 shows the scheme of power circuits connections.
Figure 2.3. Connection of power circuits to AFC200 frequency converter
Table 2.2 can be used to select the cross-sections of power cables.
The final
selection of cable cross-sections must comply with the applicable
standards.
Table 2.2. Conductor cross-sections selected for long-term load capacity in
accordance with PN-IEC 60364-5-523:2001 for Cu PVC multicore cables laid in pipes
or strips on walls, walls or floors; design ambient temperature: 25
0
C.
AFC200/...
I
in
[A]
I
z
[A]
L,N,PE
[mm
2
]
U,V,W,PE
[mm
2
]
0,37 kW
4,5
6
3 x 1,5
4 x 1,5
0,55 kW
6,9
10
3 x 1,5
4 x 1,5
0,75 kW
8,9
10
3 x 1,5
4 x 1,5
1,1 kW
13,5
16
3 x 1,5
4 x 1,5
1,5 kW
17,7
20
3 x 2,5
4 x 1,5
2,2 kW
28,8
32
3 x 4,0
4 x 2,5
3,0 kW
28,8
32
3 x 4,0
4 x 2,5
I
in
– the highest RMS value of input current
I
z
– the maximum permissible nominal protection current;
the protection can be a gG fuse or a "B" type circuit breaker.
16
TWERD Power Electronics
AFC200
Overcurrent protection
Switch
L
N
PE
* Do not use any contactors between converter
output and motor!
* Output voltage can be measured correctly only with
an electromagnetic voltmeter!
NOTE:
The terminals are for illustration only
and do not correspond to their actual location
on the inverter.
M
3~
U
V
W
L
N
PE
PE
