Nidec LEROY-SOMER VARMECA 30 Installation Und Wartung Seite 41

1.5.3 - Standards (Immunity)
The minimum immunity level is set by the generic industrial (EN 51000-6-2) and residential (EN 51000-6-1) standards.
VARMECA 30 conforms to the following standards:
EN 61000-4-2, IEC 61000-4-2 - EN 61000-4-3, IEC 61000-4-3 - EN 61000-4-5, IEC 61000-4-5 - EN 61000-4-6, IEC 61000-4-6 EN
61000-4-11, IEC 61000-4-11 - EN 61000-6-2, IEC 61000-6-2 - EN 61000-3, IEC 61000-3.
Standard
IEC 61000-4-3
Immunity standards for radiated
radio-frequency
EN 61000-4-3
IEC 61000-4-6
Generic immunity standards for
conducted radio-frequency
EN 61000-4-6
EN 50082-1
Generic immunity standards for
IEC 61000-6-1 residential, commercial and light
industrial environments
EN 61000-6-1
EN 50082-2
Generic immunity standards for the
IEC 61000-6-2
industrial environment
EN 61000-6-2
EN 61800-3
IEC 61000-6-2 Variable speed drive standards
EN 61000-6-2
EN 61000-4-4 Bursts of fast transients
EN 61000-4-5 Shock waves
1.5.4 - Earth leakage current
Earth leakage currents may depend on the type of EMC filter
used. The VARMECA 30 can be supplied with its filter integrated
and wired-up. The levels of leakage current also depend on the
voltage and/or the power supply frequency and the size of the
motor.
In all cases, for conformity with immunity standards, a voltage
limiting device is connected to earth. The shunt current is
negligible in normal circumstances.
The leak current exceeds 3.5 mA.
The minimum earth conductor cross-section
required is 10 mm in copper or 16 mm
2
1.5.4.1 - Use of earth leakage detector (residual current device)
1- Type AC: which detects AC faults. Not to be used with
variable speed drives.
2- Type A: which detects AC faults and pulsed DC faults
(provided that the DC is cancelled out at least once per cycle).
Only for use with single-phase drives.
3 - Type B: which detects AC faults, pulsed DC faults and
smoothed DC faults. Only this type is suitable for use with
all variable speed drives.
Installation and maintenance - VARMECA 30
3776 en - 2017.10 / n
GENERAL INFORMATION
Description
shielded cables outside product
Phase-earth power supply cable
Phase-to-phase power supply cable
in aluminium
2
Immunity
Application
Product casing
Control and power cables
-
-
Conforms to the first and second environment
Control cable
Power cable
Earth signal circuits
(refer to section 1.5.5)
Note: If an external EMC filter is being used, a delay of 50 ms
should be incorporated to avoid spurious faults being taken
into account.
1.5.5 - Control cable immunity
Control cable immunity can be increased outside the
VARMECA 30 by one of the following 2 methods:
• Use of shielded twisted pair cable, with shielding connected
to earth around its circumference within 100 mm of the
VARMECA 30.
• Passing the cable through a ferrite ring at 100 mm maximum
distance from the VARMECA 30.
Note: Several control cables can pass through a single ferrite.
1.5.6 - Control circuit immunity when overvoltage
occurs
Immunity to overvoltages in control circuits or in long cables
connected to the outside of a building.
The various drive input and output circuits conform to standard
EN61000-6-2 (1 kV) relating to overvoltages.
There are some exceptions, where the installation may be
exposed to overvoltage peaks which exceed the levels
determined by the standard. This may be the case in the event
of lightning strikes or earth faults associated with long cable
lengths (>30 m). To limit the risks of damage to the drive, the
following precautions could be taken:
Conformity
Level 3 (industrial)
Level 3 (industrial)
Conforms
Conforms
Level 4 (hardened industrial)
Level 3 (industrial)
Level 4
Level 3
Level 2
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