SEW MOVITRAC MC07B0037-2A3-4-00, Системное руководство

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162
System Manual V2 – MOVITRAC® B
8
Installation notes
Installation
8.1.17 Line protection and earth-leakage circuit breaker
• Install the fuses at the beginning of the mains cable behind the supply bus
junction
(→
Basic unit wiring diagram).
• SEW-EURODRIVE recommends that you do not use earth-leakage circuit breakers.
However, if an earth-leakage circuit breaker is stipulated for direct or indirect protec-
tion against contact, observe the
following note in accordance with EN 61800-5-1 :
8.1.18 PE mains connection
(→
EN 61800-5-1)
Earth-leakage currents
≥
3.5 mA may occur during normal operation. To meet the
requirements of EN 61800-5-1 observe the following:
• Supply system lead < 10 mm
2
(AWG7) :
– Route a second PE conductor with the same cross section as the supply system
lead in parallel to the protective earth via separate terminals, or
– use a copper protective earth conductor with a cross section of 10 mm
2
(AWG7)
• Supply system cable 10 mm
2
... 16 mm
2
(AWG7 ... AWG5) :
– Copper protective earth conductor with the cross section of the supply system
lead.
• Supply system cable 16 mm
2
... 35 mm
2
(AWG5 ... AWG2) :
– Copper protective earth conductor with a cross section of 16 mm
2
(AWG5)
• Supply system lead > 35 mm
2
(AWG2) :
– Copper protective earth conductor with half the cross section of the supply system
lead.
WARNING!
Wrong type of earth-leakage circuit breaker installed.
Severe or fatal injuries.
MOVITRAC
®
can cause direct current in the protective earth. In cases where an earth-
leakage circuit breaker is used for protection against direct or indirect contact, only
install a type B earth-leakage circuit breaker on the
power supply end of the
MOVITRAC unit .