Danfoss VLT 380-500 V, Руководство по конструкции

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9.4 Immunity Requirements
The immunity requirements for frequency converters depend on the environment where they are installed. The
requirements for the industrial environment are higher than the requirements for the home and office environment. All
Danfoss frequency converters comply with the requirements for both the industrial and the home/office environment.
To document immunity against electrical interference, the following immunity tests have been performed on a frequency
converter (with options if relevant), a shielded control cable and a control box with potentiometer, motor cable, and motor.
The tests were performed in accordance with the following basic standards. For more details, see Table 9.5 .
•
EN/IEC 61000-4-2: Electrostatic discharges (ESD): Simulation of electrostatic discharges from human beings.
•
EN/IEC 61000-4-3:
Incoming electromagnetic field radiation, amplitude modulated simulation of the effects of
radar and radio communication equipment, as well as mobile communications equipment.
•
EN/IEC 61000-4-4: Burst transients: Simulation of interference brought about by switching a contactor, relay, or
similar devices.
•
EN/IEC 61000-4-5: Surge transients: Simulation of transients brought about by lightning strikes near installations.
•
EN/IEC 61000-4-6: RF common mode: Simulation of the effect from radio-transmission equipment joined by
connection cables.
Basic standard Burst
IEC 61000-4-4
Surge
IEC 61000-4-5
ESD
IEC
61000-4-2
Radiated
electromagnetic field
IEC 61000-4-3
RF common
mode voltage
IEC 61000-4-6
Acceptance criterion B B B A A
Line
4 kV CM
2 kV/2
Ω
DM
4 kV/12
Ω
CM
– – 10 V
RMS
Motor
4 kV CM 4 kV/2
Ω
1) – – 10 V
RMS
Brake 4 kV CM
4 kV/2
Ω
1) – – 10 V
RMS
Load sharing 4 kV CM
4 kV/2
Ω 1) – – 10 V
RMS
Control wires
2 kV CM 2 kV/2
Ω
1) – – 10 V
RMS
Standard bus 2 kV CM
2 kV/2
Ω
1) – – 10 V
RMS
Relay wires 2 kV CM
2 kV/2
Ω 1) – – 10 V
RMS
Application and Fieldbus
options 2 kV CM
2 kV/2
Ω 1) – – 10 V
RMS
LCP cable
2 kV CM 2 kV/2
Ω
1) – – 10 V
RMS
External 24 V DC
2 V CM
0.5 kV/2
Ω
DM
1 kV/12 Ω CM
– – 10 V
RMS
Enclosure
– –
8 kV AD
6 kV CD
10 V/m –
Table 9.5 EMC Immunity Form, Voltage Range: 380–500 V, 525–600 V, 525–690 V
1) Injection on cable shield.
AD: Air Discharge; CD: Contact Discharge; CM: Common mode; DM: Differential mode.
EMC and Harmonics
VLT
®
Parallel Drive Modules
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