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K3G500-AP25-90
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II 2G Ex d e ib IIB T3 Gb
IBExU14ATEX1122 X /03
Fig. 4: Connecting wires to terminals (example)
There must be no mechanical load applied between the terminal and the
cable gland. The cable must be relieved of strain.
Fig. 5: Secure the brackets (included in terminal box) for strain relief of
the wires
Item no. 54005-5-9970 · ENG · Revision 90396 · Release 2016-09-21 · Page 11 / 16
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · info1@de.ebmpapst.com · www.ebmpapst.com
Operating instructions
Fig. 6: Strain relief for shielded wires
5.3.3.1 Exchange of screwed cable glands and plug screws
If you would like to replace screwed cable glands or plug screws, for
example because they have been lost or become worn out, the
following characteristics must be met.
5.3.4 Cable routing
No water may penetrate along the cable in the direction of the cable gland.
To relieve strain on the cables, we recommend fastening the connection
lines at intervals of 10 cm.
Fans installed lying flat
Make sure the cables are routed in a U-shaped loop.
Fig. 7: Fan installed lying flat, cable routed as a water trap.
The strain relief acts on the cable sheath, which eliminates load
on the single strands.
DANGER
Risk of explosion due to poorly sealed terminal box.
The terminal box cover, its seal and the contact surface on the
housing must not be soiled or damaged.
→ Clean the contact surfaces if soiled, note the section on
cleaning.# If damaged, send the device to ebm-papst for
repair/replacement.
The terminal box is only properly sealed if the terminal box
screw connections and cable glands have been tightened to the
specified torque.
CAUTION
Required properties for cable glands and screw plugs:- Ex e
approval
- Usage temperature -40°C to 85°C
- Connection thread M20 x 1.5 mm or M25 x 1.5 mm
- Sizing corresponding to cable diameter
- Material: Nickel-plated brass or stainless steel
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