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Connecting Up; Safety When Connecting Up - Siemens SCALANCE M800 Operating Instructions Manual

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Connecting up

EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
4.1

Safety when connecting up

Safety notices
When connecting up the device, keep to the safety notices listed below.
The equipment is designed for operation with Safety Extra-Low Voltage (SELV) by a
Limited Power Source (LPS).
This means that only SELV / LPS complying with IEC 60950-1 / EN 60950-1 / VDE 0805-1
must be connected to the power supply terminals. The power supply unit for the equipment
power supply must comply with NEC Class 2, as described by the National Electrical Code
(r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
SCALANCE M874, M876
Operating Instructions, 08/2018, C79000-G8976-C331-08
WARNING
WARNING
WARNING
4
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Scalance m874-2Scalance m874-3Scalance m876-3Scalance m876-4Scalance m876-4 (nam)

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