5 Installation at Site
52 of 98
UPA / UPA S
3400.86/17-EN
5.7.2 Connecting the temperature monitoring equipment
The submersible motors can be fitted with a temperature sensor for the motor fill
temperature.
A temperature sensor is required whenever the operating limits of the motor may be
exceeded because of reduced cooling (e.g. ochre build-up, increased temperature of
fluid handled, etc.).
UMA 150, UMA-S 150,
UMA 200, UMA-S 200,
UMA 250, UMA-S 250
▪
Insertion-type sensor
▪
Can be retrofitted
▪
4-core, 0.5 mm
2
▪
10 m shielded electric cable
▪
Maximum total length: 280 m
▪
Retrofitting requires the pump and motor to be separated from each other, see
the manufacturer’s product literature.
UMA 300, 14D
▪
Insertion-type sensor
▪
4-core, 0.5 mm
2
17)
▪
Shielded electric cable
or
▪
A temperature sensor directly fastened to the end windings
▪
3-core, 1.5 mm
2
17)
▪
Maximum total length 1400 m
Analysing device
A separate analysing device is required to analyse the temperature sensor readings.
Table 20:
Number of cores and corresponding colour codes
4 cores
3 cores
Pt 100
A1
A2
A3
A4
Pt 100
A1
A3
A4
A1 = black core
A2 = grey core
A3 = blue core
A4 = brown core
Connection to the analysing device
The sensor can be connected by a 2, 3 or 4-wire system.
Pt 100
A1 A2
A3 A4
2-wire system
Pt 100
A1
A2
A3
A4
3-wire system
For 4-core power cables, do not connect core A2.
17
Order-specific adjustments are possible.
