Specifications

as the basis for calculation of the influence harmonic
currents have on the power supply system and for the
documentation of compliance with relevant regional
guidelines: IEEE 519 -1992; G5/4.
2.9.7 Immunity Requirements
The immunity requirements for frequency converters
depend on the environment in which they are installed.
The requirements for the industrial environment are higher
than the requirements for the home and office
environments. All Danfoss frequency converters comply
with the requirements for the industrial environment and
consequently comply with the lower requirements for
home and office environment with a large safety margin.
To document immunity against electrical interference from
electrical phenomena, the following immunity tests have
been performed on a system consisting of a frequency
converter (with options if relevant), a screened control
cable and a control box with potentiometer, motor cable
and motor.
The tests were performed in accordance with the following
basic standards:
•
EN 61000-4-2 (IEC 61000-4-2): Electrostatic
discharges (ESD): Simulation of electrostatic
discharges from human beings.
•
EN 61000-4-3 (IEC 61000-4-3): Incoming electro-
magnetic field radiation, amplitude modulated
simulation of the effects of radar and radio
communication equipment as well as mobile
communications equipment.
•
EN 61000-4-4 (IEC 61000-4-4): Burst transients:
Simulation of interference brought about by
switching a contactor, relay or similar devices.
•
EN 61000-4-5 (IEC 61000-4-5): Surge transients:
Simulation of transients brought about, by
lightning that strikes near installations, for
example.
•
EN 61000-4-6 (IEC 61000-4-6): RF Common
mode: Simulation of the effect from radio-
transmission equipment joined by connection
cables.
See Table 2.17.
Voltage range: 380-480 V, 525-600 V, 525-690 V
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 criteria B B B A A
Line
4 kV CM
2 kV/2Ω DM
4 kV/12Ω CM
——
10 V
RMS
Motor
4 kV CM
4 kV/2Ω
1)
——
10 V
RMS
Brake 4 kV CM
4 kV/2Ω
1)
——
10 V
RMS
Load sharing 4 kV CM
4 kV/2Ω
1)
——
10 V
RMS
Control wires
2 kV CM
2 kV/2Ω
1)
——
10 V
RMS
Standard bus 2 kV CM
2 kV/2Ω
1)
——
10 V
RMS
Relay wires 2 kV CM
2 kV/2Ω
1)
——
10 V
RMS
Application and Fieldbus
options
2 kV CM
2 kV/2Ω
1)
——
10 V
RMS
LCP cable
2 kV CM
2 kV/2Ω
1)
——
10 V
RMS
External 24 V DC
2 V CM
0.5 kV/2Ω DM
2)
1 kV/12Ω CM
3)
——
10 V
RMS
Enclosure
——
8 kV AD
4)
6 kV CD
5)
10 V/m —
Table 2.17 EMC Immunity Form
1) Injection on cable shield
2) AD-Air discharge
3) CD-Contact discharge
4) CM-Common mode
5) DM-Differential mode
Introduction VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 43
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