5 Installation at Site
40 of 126
Amacan K
1579.807/07-EN
Position Sensor
Standard
Optional
Motor version
UN
Motor
versions
XN, YN
4
Mechanical seal leakage
✘
✘
-
5
Vibration sensor
-
-
✘
6
Motor temperature (bimetal)
✘
✘
-
7
Motor temperature (PTC)
-
✘
-
8
Motor temperature (Pt100)
-
-
✘
5.4.1.4.1 Motor temperature
DANGER
Insufficient cooling
Explosion hazard!
Winding damage!
▷
Never operate a pump set without operational temperature monitoring
equipment.
▷
For explosion-proof pump sets use a thermistor motor protection relay with
manual reset and ATEX certification for monitoring the temperature of
explosion-proof motors in "flameproof enclosure" type of protection.
The pump set features double monitoring of the winding temperature. 2 bimetal
switches (terminals 21 and 22, max. 250 V~/2 A) serve as temperature control devices
which open when the winding temperature is too high. Tripping must result in the
pump set cutting out. Automatic re-starting is permitted.
For explosion-proof pump sets, the three additional, series-connected (PTC)
thermistors with terminals 10 and 11 must be used. They must be connected to a
thermistor motor protection relay with manual reset and ATEX certification for
monitoring the temperature of explosion-proof motors with "flameproof enclosure"
type of protection.
5.4.1.4.2 Leakage inside the motor
DANGER
Incorrect monitoring of leakage electrode
Explosion hazard!
Danger of death from electric shock!
▷
Voltages must be < 30 V AC and tripping currents < 0.5 mA.
