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3.2.4 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 1kW total
power).
2 IEC/EN 61000-3-12 Equipment 16A-75A and professional equipment as from 1kW up to 16A phase current.
3.2.5 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 440V).
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 below, 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 5 locations
(see
illustration ):
To maintain PELV all connections made to the control
terminals must be PELV, e.g. thermistor must be
reinforced/double insulated.
0.18-22kW
1. Power supply (SMPS)
2. Optocouplers, communication between AOC and
MOC
3. Custom relays
SMPS
130BB896.10
1
2
3
a
M
The functional galvanic isolation (a on drawing) is for the
RS485 standard bus interface.
CAUTION
Installation at high altitude:
At altitudes above 2km, please contact Danfoss regarding
PELV.
3.4 Earth Leakage Current
WARNING
DISCHARGE TIME
Touching the electrical parts could be fatal - even after the
equipment has been disconnected from mains.
Also make sure that other voltage inputs have been
disconnected, such as load sharing (linkage of DC
intermediate circuit), as well as the motor connection for
kinetic back-up.
Before touching any electrical parts, wait at least the
amount of time indicated in the
Safety Precautions section.
Shorter time is allowed only if indicated on the nameplate
for the specific unit.
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