Siemens SCALANCE XP-200, Руководство по эксплуатации

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SCALANCE XP-200
Operating Instructions, 05/2016, C79000-G8976-C428-01
51
Connecting up
4
4.1 Safety when connecting up
Safety notices
When connecting up the device, keep to the safety notices listed below.
Safety extra low voltage
WARNING
Power supply
The device is designed for operation with a directly connectable safety extra-low voltage
(SELV).
General notices
NOTICE
Suitable fusing for the power supply cables
The current on the terminal may not exceed 5 A. Use a fuse, that protects against currents
> 5 A. The fuse must meet the following requirements:
•
In areas where NEC or CEC applies:
– Suitable for DC (min. 60 V / max. 5 A)
– Breaking current at least 10 kA
– Approval according to ANSI/UL 248-1 or CSA C22.2 No. 248.1
– Classes R, J, L, T or CC
– Suitable for the protection of DC power supply circuits
•
In other areas:
– Suitable for DC (min. 60 V / max. 5 A)
– Breaking current at least 10 kA
– Approval in compliance with IEC 60127-1 / EN 601127-1
– Switch off characteristics: B or C for circuit breakers and fuses
– Suitable for the protection of DC power supply circuits
With 24 VDC devices you do not need to fuse the supply cable if you only use power
sources with a limited power source (LPS) or power sources according to NEC Class 2 for
the power supply of the devices.