WIKA IL-10 Manual De Instrucciones página 17

Sonda de pozo con seguridad intrínseca
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5. Commissioning, operation
5.2 Electrical mounting
Requirements for voltage supply
→ For power supply see product label
Power the instrument via a certified intrinsically safe circuit.
For applications that require EPL Gb or Db, the power supply and signal circuit should have a protection level of "ib".
Then the interconnections and thus the submersible pressure transmitter will have a protection level of II 2G Ex ib
IIC T4/T5/T6 Gb or II 2D Ex ib IIIC T4/T5/T6 Db, although the submersible pressure transmitter is marked otherwise
(see EN 60079-14 section 5.4).
Note the safety-related maximum values in chapter 3.3 "Special conditions for safe use".
Requirements for electrical connection
Fine-stranded leads with bare ends must be finished with end splices.
Make sure that no moisture enters at the cable end.
Requirements for shielding and grounding
The cable shield is connected conductively with the case.
Ground the cable shield at least at one end of the cable, if the lines are longer than 30 m or leave the building.
Ground the cable shield at one end, preferably in the non-Ex area (EN 60079-14). The simultaneous connection of
the case and the cable shield to ground is only permitted if any accidental energisation between the shield connec-
tion (e.g. at the isolated barrier) and the case can be excluded (see EN 60079-14).
Installation and mounting to zone 0 and zone 20
For mounting instructions, see chapter 3.3 "Special conditions for safe use".
WIKA operating instructions submersible pressure transmitter model IL-10
EN
17

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