Harmonics Emission Requirements; Harmonics Test Results (Emission); Immunity Requirements - Danfoss VLT AQUA Drive FC 202 Design Manual

Introduction
(U % of U)
N

2.9.5 Harmonics Emission Requirements

Equipment connected to the public supply network
Options: Definition:
1 IEC/EN 61000-3-2 Class A for 3-phase balanced
equipment (for professional equipment only up to 1
kW total power).
2 IEC/EN 61000-3-12 Equipment 16 A-75 A and profes-
sional equipment as from 1 kW up to 16 A phase
current.
Table 2.14 Harmonics Emission Standards

2.9.6 Harmonics Test Results (Emission)

Power sizes P110 - P450 in T4 also complies with IEC/EN
61000-3-12 even though not required because currents are
above 75 A.
Individual Harmonic Current I
I I
5 7
Actual
40 20
(typical)
Limit for
40 25
R ≥120
sce
Harmonic current distortion factor (%)
THD
Actual
46
(typical)
Limit for
48
R ≥120
sce
Table 2.15 Harmonics Test Results (Emission)
If the short-circuit power of the supply S
or equal to:
S SC = 3 × R SCE × U mains × I equ =
at the interface point between the customer supply and
the public system (R ).
sce
It is the responsibility of the installer or user of the
equipment to ensure, by consultation with the distribution
network operator if necessary, that the equipment is
connected only to a supply with a short-circuit power S
greater than or equal to specified.
Other power sizes can be connected to the public supply
network by consultation with the distribution network
operator.
®
VLT AQUA Drive FC 202 Design Guide
/I (%)
n 1
I I
11 13
10 8
15 10
PWHD
45
46
is greater than
sc
3 × 120 × 400 × I equ
sc
®
MG20Z102 - VLT is a registered Danfoss trademark
Compliance with various system level guidelines:
The harmonic current data in the table are given in
accordance with IEC/EN61000-3-12 regarding the Power
Drive Systems product standard. They can be used as the
basis for calculation of the influence the harmonic current
has on the power supply system and for the documen-
tation of compliance with relevant regional guidelines: IEEE
519 -1992; G5/4.

2.10 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 the industrial environment as
well as 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 made 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 for
example, by lightning that strikes near instal-
lations.
•
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 2.16.
2 2
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