3.2.2 EMC Test Results (Emission)
Drive type
Conducted emission. Maximum shielded cable length [m]
Radiated emission
Industrial environment
Housing, trades and
light industries
Industrial environment
EN 55011 Class A2
EN 55011 Class A1
EN 55011 Class B
EN 55011 Class A2
EN 55011 Class A1
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
≤2.2 kW.
Single
phase, 230 V
25
-
15
50
5
15
Yes
-
No
Yes
≤7.5 kW. Up
to 500 V AC,
3 phase
25
-
15
50
-
15
Yes
-
No
Yes
11 kW to 22
kW. Up to
500 V AC, 3
phase
25
-
15
50
-
15
Yes
-
No
Yes
Table 3.3 EMC Test Result
3.2.3 Harmonics Emission Requirements
Equipment connected to the public supply network
WARNING
Cannot comply, only with power option
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 3.4 Harmonics Emission Requirements
3.2.4 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 the industrial environment and
consequently comply also with the lower requirements for
home and office environment with a large safety margin.
3.3 Galvanic Isolation (PELV)
3.3.1 PELV - Protective Extra Low Voltage
PELV offers protection by way of extra low voltage.
Protection against electric shock is ensured when the
electrical supply is of the PELV type and the installation is
made as described in local/national regulations on PELV
supplies.
All control terminals and relay terminals 01-03/04-06
comply with PELV (Protective Extra Low Voltage) (Does not
apply to grounded Delta leg above 440 V).
Galvanic (ensured) isolation is obtained by fulfilling
requirements for higher isolation and by providing the
relevant creapage/clearance distances. These requirements
are described in the EN 61800-5-1 standard.
The components that make up the electrical isolation, as
described, also comply with the requirements for higher
isolation and the relevant test as described in EN
61800-5-1.
The PELV galvanic isolation can be shown in
To maintain PELV all connections made to the control
terminals must be PELV, e.g. thermistor must be
reinforced/double insulated.
Product Overview
VLT
®
Micro Drive FC 51 Design Guide
MG02K302 - Rev. 2013-12-03
23
3
3