Panel Designing In Consideration Of Effects Of Noise - Toshiba TOSVERT VF-AS3 Instruction Manual

Applicable
Input
motor
voltage
capacity
Class
(kW)
0.75
1.5
2.2
4.0
2
5.5
7.5
11
15
18.5
22
30
3-phase
37
480 V
45
55
75
90
110
132
9
160
220
250
280
315
*1 Case of 100% load ND continuous operation. The heat loss for the optional external devices (input reactor, radio noise reduction filters, etc.) is not
included in the calorific values in the table.

■ Panel designing in consideration of effects of noise

The inverter generates high frequency noise. When designing the control panel, consideration must
begiven to that noise.
Examples of measures are given below.
• Wire so that the power connections and the control connections are separated. Do not place them
in the same conduit, do not run them in parallel, and do not bundle them.
• Provide shielding and twisted wires for control connection.
• Separate the input (power) and output (motor) wires of the power circuit. Do not place them in the
same conduit, do not run them in parallel, and do not bundle them.
• Be sure to ground the inverter grounding terminals.
• Install a surge absorber on any magnetic contactor and relay coils used around the inverter.
• Install radio noise reduction filters if necessary.
2. Installation and wiring
Frame
Inverter type-form
size
4004PC
4007PC
4015PC
4022PC
4037PC
4055PC
4075PC
4110PC
4150PC
4185PC
4220PC
VFAS3- 4300PC
4370PC
4450PC
4550PC
4750PC
4900PC
4110KPC
4132KPC
4160KPC
4220KPC
4250KPC
4280KPC
Inverter Inner side
calorific value calorific value
(W) *1 (W) *1
56 26
79 28
A1 100 30
140 33
192 37
233 45
A2
323 53
455 62
A3 557 70
603 71
770 94
A4 939 107
1101 123
1094 132
A5 1589 175
1827 199
2920 309
A6 3457 358
4013 405
A7 5404 452
6279 606
A8 6743 769
7749 769
2-8
E6582062
Forced Sealeded
air-cooled cabinet
Required Necessary
ventilation heat discharge
amount surface
3 2
(m /min) quantity (m )
0.32 1.13
0.45 1.58
0.57 2.00
0.79 2.80
1.09 3.83
1.32 4.66
1.84 6.47
2.58 9.10
3.16 11.14
3.42 12.06
4.37 15.40
5.33 18.78
6.25 22.02
6.21 21.88
9.02 31.78
10.37 36.54
16.58 58.40
19.62 69.13
22.78 80.26
30.68 108.08
35.64 125.58
38.28 134.86
43.99 154.98