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Specification of SN200G high-performance vector convertor
Mechanical and electrical installation
- 26 -
Model of frequency convertor
(MCCB) A
Recommend
contactor A
Major loop
wiring on input
side mm2
Major loop wiring
on output side
mm2
Recommend
control loop
wiring mm2
SN200G-37G-T4
SN200G-45P-T4
160
100
16
16
1.5
SN200G-45G-T4
SN200G-55P-T4
200
125
25
25
1.5
SN200G-55G-T4
SN200G-75P-T4
200
125
35
25
1.5
SN200G-75G-T4
SN200G-90P-T4
250
160
50
35
1.5
SN200G-90G-T4
SN200G-110P-T4
250
160
70
35
1.5
SN200G-110G-T4
SN200G-132P-T4
350
350
120
120
1.5
SN200G-132G-T4
SN200G-160P-T4
400
400
150
150
1.5
SN200G-160G-T4
SN200G-200P-T4
500
400
185
185
1.5
SN200G-200G-T4
SN200G-220P-T4
600
600
150*2
150*2
1.5
SN200G-220G-T4
SN200G-250P-T4
600
600
150*2
150*2
1.5
SN200G-250G-T4
SN200G-280P-T4
800
600
185*2
185*2
1.5
SN200G-280G-T4
SN200G-315P-T4
800
800
185*2
185*2
1.5
SN200G-315G-T4
SN200G-355P-T4
800
800
150*3
150*3
1.5
SN200G-355G-T4
SN200G-400P-T4
800
800
150*4
150*4
1.5
SN200G-400G-T4
SN200GGT450P
1000
1000
150*4
150*4
1.5
3.2.2 Instructions of peripheral electrical components
Figure 3-2 Instructions of peripheral electrical components
for SN200G frequency
convertor
Part name
Installing
site
Functional description
Air switch
Front of input circuit
Break power if any overcurrent of downstream equipment
Contactor
Input side of air switch
and convertor
Turn on/off power of convertor. Avoid frequent on/off operation of convertor
through contactor (< twice every minute) or starting operation directly
AC input reactor
Input side of convertor
Promote power factor on input side; eliminate higher harmonic on input
side and prevent device damage caused by voltage waveform distortion;
eliminate unbalanced input current caused by unbalance between power phase
EMC input filter
Input side of convertor
Reduce external conduction and radiated interference of convertor; reduce
conduction interference from power end to convertor, promote antijamming
capability of convertor
DC reactor
DC bus side of convertor
Promote power factor on input side; enhance efficiency and heat stability of
convertor. Eliminate influence of higher harmonic on input side on convertor,
reduce external conduction and radiated interference
AC output reactor
Between output side of
convertor and motor.
Install near frequency
convertor
Output side of convertor contains much higher harmonic. If motor is far away
from convertor, much distributed capacitance exists in circuit. Certain
harmonic may produce resonance in circuit, which will damage insulating
property of motor and even motor, produce large leak current and cause
frequent protection of convertor. The distance between convertor and motor
generall exceeds 100m, suggest installing output AC reactor