Wilo EMU KS 5 Ex Notice De Montage Et De Mise En Service page 227

PE U V W
M 3~
Fig. 6: Connection diagram three-phase cur-
rent motor EMU KS...Ex
6.5.5 Monitoring equipment connection
6.5.5.1 Monitoring of motor winding
(KS...Ex only)
Installation and operating instructions Wilo-EMU KS
Installation and electrical connection
EMU KS...Ex
20 21 DK
Wire
1, 2
3
4
5
6
Green/yellow (gn-
ye)
The three-phase current version is equipped with bare cable ends. Connection to the
mains is established by connecting the power supply cable in the switchgear. Electrical
connection must always be carried out by a qualified electrician!
For the correct direction of rotation, a clockwise rotating field must be available.
NOTICE! The individual wires are designated according to the connection diagram.
Do not cut the wires! There is no additional assignment between the wiring diagram
and connection diagram.
Refer to the enclosed connection diagram for details regarding the connection and in-
stallation of the monitoring devices. Electrical connection must always be carried out
by a qualified electrician!
NOTICE! The individual wires are designated according to the connection diagram.
Do not cut the wires! There is no additional assignment between the wiring diagram
and connection diagram.
DANGER
Risk of explosion due to incorrect connection!
If the monitoring devices are not connected correctly, there is a risk of fatal injury
due to explosion in potentially explosive areas! Connection must always be carried
out by a qualified electrician. If used in potentially explosive areas:
• Connect the thermal motor monitoring via an evaluation relay!
• Deactivation by the temperature limiter must be conducted with reactivation
lock! It must only be possible to restart the unit when the unlock key has been
actuated by hand!
• Connect the external electrode (e.g. sealing chamber control) via an evaluation
relay with an intrinsically safe circuit!
• Note the additional information in the chapter on potentially explosive areas
found in the appendix of these installation and operating instructions!
Overview of monitoring devices:
Motor compartment
Motor winding
Motor bearings
Sealing chamber
Internal electrode
External electrode
Key: - = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
With bimetallic strip
Connect the bimetallic strips in the switchgear itself or via an evaluation relay.
Connection values: max. 250 V(AC), 2.5 A, cos φ = 1
Designa- Terminal
tion
20, 21 Monitoring of motor winding
U L1
V L2
W L3
DK Monitoring of motor compartment
PE Earth
KS...
-
-
-
-
o
en
KS...Ex
•
•
-
-
o
227