Trumpf TruBend 2000 Series, Руководство оператора

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Residual current device (RCD)
Notes
■ Whether a fault current circuit breaker has to be used
depends upon the local electricity company.
■ On the line side, only residual current circuit breakers of
type B (sensitive to all types of fault current, EN
50178/5.2.11.2; VDE 0160) are approved.
A fault current circuit breaker provides protection from fault cur-
rents due to directly or indirectly touching live parts.
If a fault current circuit breaker is used to provide protection
from direct contact, an isolating transformer must be used
(EN 50178 section 5.2.11.1, VDE 0160). This is because the
leakage current resulting from the design is >30 mA.
If a fault current circuit breaker is to be used to provide protec-
tion from indirect contact, this must be selected depending on
the machine's fault current.
Note
In rare cases, customer-side voltage fluctuations on the
machine's power input filter may lead to higher leakage currents
than the typical value specified. The main power supply and the
machine must then be separated by an isolating transformer.
Typical leakage currents are 300 mA.
If a fault current circuit breaker is used, observe the following
requirements:
Property Requirement
Back-up fuse (see "Tab. 2-8", pg. 2 ‐ 12)
Fault current circuit breaker 63 A / 300 mA
Min. permissible cross-section 10 mm²
Tab. 2-10
TRUMPF recommends the following fault current circuit breaker:
■ Doepke: DFS 4B SKS 63-4 / 0.3
Power supply configurations
A TN system with grounded star point is the standard power
supply configuration for the connection.
B1161en Electrics - Version 1
2 ‐ 13
Fault current circuit breaker
for direct contact
Fault current circuit breaker
for indirect contact