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

Introduction

2.10.5 Harmonics Emission Requirements

Equipment connected to the public supply network
Option 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 2.15 Harmonics Emission Standards

2.10.6 Harmonics Test Results (Emission)

Power sizes up to PK75 in T2 and T4 complies with IEC/EN
61000-3-2 Class A. Power sizes from P1K1 and up to P18K
in T2 and up to P90K in T4 complies with IEC/EN
61000-3-12, Table 4. Power sizes P110 - P450 in T4 also
complies with IEC/EN 61000-3-12 even though not
required because currents are above 75 A.
Table 2.16 describes that the short-circuit power of the
supply S at the interface point between the user's supply
sc
and the public system (R ) is greater than or equal to:
sce
S SC R SCE × U mains × I equ = 3 × 120 × 400 × I equ
3 ×
=
Individual Harmonic Current I
I
5
Actual (typical) 40
Limit for
40
R ≥120
sce
Harmonic current distortion factor (%)
THD
Actual (typical) 46
Limit for
48
R ≥120
sce
Table 2.16 Harmonics Test Results (Emission)
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 that specified in the equation.
Consult the distribution network operator to connect other
power sizes to the public supply network.
Compliance with various system level guidelines:
The harmonic current data in Table 2.16 are provided in
accordance with IEC/EN61000-3-12 with reference to the
power drive systems product standard. They may be used
as the basis for calculation of the influence harmonic
currents have on the power supply system and for the
MG20Z202
Design Guide
/I (%)
n 1
I I I
7 11 13
20 10 8
25 15 10
PWHD
45
46
sc
Danfoss A/S © Rev. 06/2014 All rights reserved.
documentation of compliance with relevant regional
guidelines: IEEE 519 -1992; G5/4.
2.10.6.1 Harmonics Test Results (Emission)
Power sizes up to PK75 in T2 and T4 complies with IEC/EN
61000-3-2 Class A. Power sizes from P1K1 and up to P18K
in T2 and up to P90K in T4 complies with IEC/EN
61000-3-12, Table 4. Power sizes P110 - P450 in T4 also
complies with IEC/EN 61000-3-12 even though not
required because currents are above 75 A.
Table 2.16 describes that the short-circuit power of the
supply S at the interface point between the user's supply
sc
and the public system (R ) is greater than or equal to:
sce
S SC 3 × R SCE × U mains × I equ = 3 × 120 × 400 × I equ
=
Individual Harmonic Current I
I
5
Actual (typical) 40
Limit for
40
R ≥120
sce
Harmonic current distortion factor (%)
THD
Actual (typical) 46
Limit for
48
R ≥120
sce
Table 2.17 Harmonics Test Results (Emission)
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 that specified in the equation.
Consult the distribution network operator to connect other
power sizes to the public supply network.
Compliance with various system level guidelines:
The harmonic current data in Table 2.16 are provided in
accordance with IEC/EN61000-3-12 with reference to the
power drive systems product standard. They may be used
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.

2.11 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.
/I (%)
n 1
I I I
7 11 13
20 10 8
25 15 10
PWHD
45
46
sc
33
2 2