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Slot resistance thermometer
- Electric motors
- Single and double design
- Measuring circuit 2-, 3-, 4-wire
- Sensing element:
Pt100 (IEC 751)
Ni100 (DIN 43760)
Cu50 (GOST 6651-2009)
- Design of the sensing element:
- A wide range of designs
- Temperature class F (+155°C), H (+180°C)
- Non-standard parameters available upon request:
- non-standard size
- cables according to customer's specifications
- Dielectrical strength 2.5 kVAC/60 sec.,
optionally 5.0 kVAC/60 sec.
Insert these thin, laminated RTDs in winding slots to detect high temperatures before insulation damage occurs. Six sensors are recommended for each motor, two per phase. Locate sensors near the hottest point of the windings for best performance.
Temperature sensors are bifilary wound, they allow measuring temperature on almost entire length of the housing. This eliminates the danger of missing hot (or overheated) part of insulation by the point sensor (CHIP).
Platinum wire bifilary wound is placed inside the laminated epoxy glass sheet. Connecting cables are connected with bifilar wiring, they are typically delivered in teflon insulation. The sensor has a high mechanical stability and does not require additional insulation for high-voltage of 2.5 kV-– and optionally 5.0 kV.
Dimensions of the laminated sheet, length and insulation of the connecting cable, may be selected depending on the application needs/requirements
Unique design of a core with wound wire
In our sensors, we use a unique method of bifilar winding, so that wire does not “break” on the edges of specially prepared core. It makes out thermometers almost completely resistant to corona discharge or other sudden transients of power.
ATEX, IECEx, EAC Ex versions
For application in explosion-hazardous areas intrinsically safe Exi models are available. These designs have CE test certificates according to the 2014/34/EU (ATEX) Directive, Scheme IECEx and EACEx.
Above mentioned data presents only small part of our supplies program of stator temperature sensors. Upon the customer's request, other versions can also be delivered.