Wilo T 17 E3 Series - Page 32

en Installation and electrical connection
32 WILO SE 2019-01
Overview of monitoring devices
T12 ... T17 T 20 T 20.1 T 24 ... T42 T49, T56 T 50, T 50.1, T 57.1, T 63.1 T 63.2, T 72
Internal monitoring devices
Motor compartment
• • − − − − −
Terminal room/motor compartment
− − • • • • •
Motor winding
• • • • • • •
Motor bearings
− o o o o o o
Sealing chamber
• − − − − • •
Leakage chamber
− − • − − • •
Vibration sensor
− − − o o o o
External monitoring devices
Sealing chamber
o o o o o o o
• = standard-equipped , − = not available, o = optional
All the monitoring devices fitted must always be connected!
6.5.4.1 Monitoring of motor compart-
ment
Connect the electrodes via an evaluation relay. Relay “NIV101/A” is recommended for
this. The threshold is 30kOhm.
Wiring diagram
DK
Electrode connection
The system must be deactivated when the threshold is reached!
6.5.4.2 Monitoring of terminal room/mo-
tor compartment
Connect the electrodes via an evaluation relay. Relay “NIV101/A” is recommended for
this. The threshold is 30kOhm.
Wiring diagram
DK
Electrode connection
The system must be deactivated when the threshold is reached!
6.5.4.3 Terminal room, motor compart-
ment and sealing chamber monit-
oring
Connect the electrodes via an evaluation relay. Relay “NIV101/A” is recommended for
this. The threshold is 30kOhm.
Wiring diagram
DK
Electrode connection
The system must be deactivated when the threshold is reached!
6.5.4.4 Monitoring of motor winding
With bimetallic strips
Directly connect bimetallic strips to the switchgear or via an evaluation relay.
Connection values: max. 250V(AC), 2.5A, cos φ=1
Wiring diagram for bimetallic strip
Temperature limiter
20, 21
Bimetallic strip connection
Temperature controller and limiter
21
High temperature connection
20
Centre terminal
22
Low temperature connection