IFM Electronic NAMUR NN5008 Operating Instructions Download Page 3

• Maximum effective internal inductance (Li) and capacitance (Ci):

The values apply to potted cables.

Articles with cable / units with cable
NN****) For cable units with potted different cable lengths the values of
the cable must be taken into account:

1.2 µH (Li) / 50 pF (Ci) per metre of potted cable.

*1) Thus the maximum effective internal inductance of the unit results in: 

Li = 130 µH + cable length in (m) X 1.2 µH.

*2) Thus the maximum effective internal capacitance of the unit results in:

Ci = 140 nF + cable length in (m) X 0.05 nF.

Installation remarks / Mounting

• Adhere to the relevant national regulations and provisions.
• Avoid electrostatic charging from plastic units and cables.
• Protect the units efficiently against damage.
• The cable must be laid fixed and protected efficiently against damage.
• The units are not suitable for installation in walls which separate zone 0

from zone 1.

• The relevant installation regulations EN60079-14, EN50039 must be

adhered to.

• Steps must be taken to ensure the equalisation of potential of metal parts

(also fixing material).

Maintenance / Repair

The unit must not be modified nor can it be repaired. In case of a fault please
contact the manufacturer.
If needed, you can obtain data sheets or EC type test certificates from the man-
ufacturer (see cover sheet).

IRL

GB

ENGLISH

7

Article no.

NN5008

---

130

140

2 m

130

140

6 m

135

140

10 m

140

140

---

130

140

---

130

140

xx m

*1)

*2)

NN5009
NN5010
NN5011
NN5013
NN5015

NN****)

Cable

length

Internal inductance

(total) in µH

Internal capacitance

(total) in nF

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