Field Supply; Power Supply Components - WAGO 750 Series Manual

System Features

3.2.3 Field Supply

Observe the following requirements for the field supply:
• For non-hazardous active voltages per EN/UL/IEC 61010-1, use SELV/PELV power
supplies.
• Use suitable overcurrent protection for each infeed. You can find detailed product infor-
mation in the corresponding
Additional supply modules are needed for:
• Higher power requirements
• Use of different reference voltages
• Use of different field voltages (e.g., 230 VAC, 120 VAC or 24 VDC)
• Switching to special applications and environments (e.g., Ex i)
Adding a supply module interrupts the field power supply that passes through the power
jumper contacts. A new power infeed, which may also include a potential change, begins
at that point.

3.2.4 Power Supply Components

The following components are needed in order to establish a power supply:
• Voltage Sources
– SELV/PELV voltage sources for non-hazardous active voltages per EN/UL/IEC
– Voltage sources according to the field supply requirements
• Overcurrent Protective Equipment
– Supply modules with integrated fuses
– External fuse terminal blocks
– Circuit-breakers
26 System manual | Version: 3.3.1
61010-1
& Product
Manual.
Serie 750, 753
Figure 14: Field Supply Infeed (Example)