Potential Equalization; Terminals; Cable Entries; Cable Specification - Endress+Hauser Cerabar PMP71B Technical Information

Potential equalization

Terminals

Cable entries

Cable specification

Overvoltage protection

16
1 Ground terminal for connecting the potential matching line
If necessary, the potential matching line can be connected to the outer ground terminal of the
transmitter before the device is connected.
For optimum electromagnetic compatibility:
• Keep the potential matching line as short as possible
• Maintain a cross-section of at least 2.5 mm
• Supply voltage and internal ground terminal: 0.5 to 2.5 mm
• External ground terminal: 0.5 to 4 mm
1 Cable entry
2 Dummy plug
The type of cable entry depends on the device version ordered.
Always route connecting cables downwards so that moisture cannot penetrate the connection
compartment.
If necessary, create a drip loop or use a weather protection cover.
• The cable outer diameter depends on the cable entry used
• Cable outer diameter
• Plastic: Ø5 to 10 mm (0.2 to 0.38 in)
• Nickel-plated brass: Ø7 to 10.5 mm (0.28 to 0.41 in)
• Stainless steel: Ø7 to 12 mm (0.28 to 0.47 in)
Devices without optional overvoltage protection
Equipment from Endress+Hauser fulfills the requirements of the product standard IEC / DIN EN
61326-1 (Table 2 Industrial Environment).
Depending on the type of port (DC power supply, input/output port) different testing levels according
to IEC / DIN EN 61326-1 against transient overvoltages (Surge) are applied (IEC / DIN EN
61000-4-5 Surge):
Test level on DC power ports and input / output ports is 1000 V line to earth
Devices with optional overvoltage protection
• Spark-over voltage: min. 400 V DC
• Tested according to IEC / DIN EN 60079-14 sub chapter 12.3 (IEC / DIN EN 60060-1 chapter 7)
• Nominal discharge current: 10 kA
Overvoltage category
Overvoltage category II
1
2 (14 AWG)
(20 to 14 AWG)
2
2 (20 to 12 AWG)
1 2
Cerabar PMP71B
A0045412
A0045414
Endress+Hauser