en
Installation and electrical connection
26
WILO SE 2017-12
5
3
1
W1
V1
U1
2
6
4
W2
V2
U2
8
max. °C
min. °C
7
M 3~
gn-y
e
20
21
PE
9
22
Fig. 13:
Connection diagram: P17 three-phase
current motor, star-delta activation, bimetallic
strip
Wire
Designa-
tion
Terminal
1
U1
Mains connection (start of winding)
3
V1
5
W1
4
U2
Mains connection (end of winding)
6
V2
2
W2
7, 8, 9
20, 21, 22
Monitoring of motor winding
Green/yellow (gn-
ye)
PE
Earth
5
8
7
3
1
M 3~
gn-y
e
W1
V1
10
11
U1
2
6
4
W2
V2
U2
PE
9
12
max. °C
min. °C
Fig. 14:
Connection diagram: P17 three-phase
current motor, star-delta activation, PTC
sensor
Wire
Designa-
tion
Terminal
1
U1
Mains connection (start of winding)
3
V1
5
W1
4
U2
Mains connection (end of winding)
6
V2
2
W2
7, 8, 9
10, 11, 12
Monitoring of motor winding
Green/yellow (gn-
ye)
PE
Earth
6.5.5
Monitoring equipment connection
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!
