Protection Against Electric Shock By Protective Low Voltage (Pelv) - Bosch Rexroth IndraControl VCP 05.2 Project Planning Manual

R911310377 / 02 | Rexroth IndraControl VCP 05
Safety Instructions for Electric Drives and Controls
3.6 Protection Against Electric Shock by Protective Low Voltage
(PELV)
Electric Drives and Controls | Bosch Rexroth AG
To be observed with electrical drive and filter components:
DANGER
High electrical voltage on the housing! High leakage current! Dan-
ger to life, danger of injury by electric shock!
• Connect the electrical equipment, the housings of all electrical units
and motors permanently with the safety conductor at the ground
points before power is switched on. Look at the connection diagram.
This is even necessary for brief tests.
• Connect the safety conductor of the electrical equipment always per-
manently and firmly to the supply mains. Leakage current exceeds
3.5 mA in normal operation.
• Use a copper conductor with at least 10 mm
entire course for this safety conductor connection!
• Prior to startups, even for brief tests, always connect the protective
conductor or connect with ground wire. Otherwise, high voltages can
occur on the housing that lead to electric shock.
All connections and terminals with voltages between 0 and 50 Volts on
Rexroth products are protective low voltages designed in accordance
with international standards on electrical safety.
WARNING
High electrical voltage due to wrong connections! Danger to life,
bodily harm by electric shock!
• Only connect equipment, electrical components and cables of the
protective low voltage type (PELV = Protective Extra Low Voltage)
to all terminals and clamps with voltages of 0 to 50 Volts.
• Only electrical circuits may be connected which are safely isolated
against high voltage circuits. Safe isolation is achieved, for example,
with an isolating transformer, an opto-electronic coupler or when
battery-operated.
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cross section over its