EPA PECON+, Инструкция по эксплуатации

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Important basic information
PE CON+ ® www.epa.de 10
of
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1.11 Product description
A familiar problem for manufacturers of machinery and pluggable devices:
Due to modern drive regulators such as frequency converters or servo controllers, the
operational leakage current of the device or machine may increase.
However, DIN EN 50178/VDE 0160 only permits an operational leakage current of up to 3.5
mA AC. If this value is exceeded, the standard stipulates that the protective earth requires a
fixed connection. This limits the mobility of the machines or devices.
However, this leakage current can be minimised through the careful arrangement of the
individual components as well as with complex network filters. Unfortunately, this
implementation is usually too expensive, and in many cases the operational leakage current
is still above 3.5 mA due to the system.
The notion of the standard is reasonable and understandable as it protects the users of the
machines or devices from electric shock if such a device is disconnected from the
protective earth system due to a defective connection cable, plug or extension cable. But in
addition, the standard expressly allows higher leakage currents if the availability of the
protective earth system is permanently monitored. This is where the PE CON+ ® comes in.
The PE CON+ ® is a monitoring device that is installed directly at the feed point of the mobile
machine.
The quality of the protective earth is permanently monitored by the
PE
CON+
®
. If it is
working flawlessly, the integrated signal contact of the PE CON+
®
releases the main
contactor of the machine.
The device, which is only 45 mm wide, is mounted on a DIN rail and reliably monitors all
common voltage ranges.
The
PE CON+ ® is used for monitoring the protective earth of single phase and 3-phase
pluggable consumers. Depending on the product, polarity reversal of phase (L) and neutral
conductor (N) is also monitored. Other product variants with special functions are also
available.
The
PE CON+
®
IT is available for networks without neutral conductor (N).