Burkert Type 8643 - Manual (Page 20)

20
Installation
Cable glands 7.3.
WARnIng!
Danger of explosion!
No explosion protection if cable glands are defective or wrong.
Replace defective cable glands only with Ex-authorized (EEx e II) cable glands with adequate application •
temperature range (see Appendix / Type Examination Certificate).
At the factory all cable glands are sealed with a plug (protection class IP65). •
Seal all unused cable glands with a plug to maintain IP protection (IP65). •
M16 x 1.5 potential equalisation PA
(with plastic housing)
4 black M20 x 1.5 cable glands bus and power supply
8 blue M20 x 1.5 cable glands for intrinsically safe circuits
(sensor/actuator outputs)
Cable glands Fig. 6:
The housing features eight blue cable glands for the intrinsically safe circuits and four black glands for the bus
and power supply with increased safety.
The bus and power supplies each have two M20x1.5 glands to loop through the supply lines.
For sensors and actuators each output (with two sensors) has an M20x1.5 cable gland.
Devices with plastic housing have an M16x1.5 cable gland for the internal earth connection (PA).
Devices with metal housing (e.g. aluminium) have an earth connection on the outside of the housing.
english
Type 8643 PA