Airgap Flux Probe for Rotor Interturn Short Circuit Detection of Turbo Generators Individually designed to machine construction Flexible Probe Tip, ideally designed for machines with retaining ring > rotor diameter High Temperature range, very thin signal cable allows to lay the cable through e.g. ventilation ducts General Description Rotor Winding Short Turn Detection of Turbo Generators The ASCF-Series is one of the ASC family of airgap search coils designed and manufactured by Sparks Instruments SA and is used to detect faults in the rotor winding insulation of turbo generators. As machine designs are different, the ASCF sensor is typically designed especially for each type of machine. The probe is installed on the wedge within the airgap between rotor and stator and the integrated small high temperature cable allows an easy routing outside of the machine. The open wires allows to lay also the cable trough the ventilation holes instead passing it through the endwinding section. The Probe measures the variation of the magnetic flux created from each rotor coil. The sensor sensing part is integrated within a flexible housing, allowing a safe installation of the rotor, even the retaining ring is bigger than the rotor diameter. The ASCF-Series Flux Probe withstands up to 2 Tesla and is designed to operate for up to 155°C. The integrated signal cable is available in length of 5, 10 or 15m and if If longer signal cables are required, a signal driver is available. Ordering Information Order Code: 1x ASCF-325xx with 5,10 or 15m integrated cable for airgaps up to 65mm and slotwidth >26mm 1x ASCF-528xx with 5,10 or 15m integrated cable for airgaps up to 80mm and slotwidth >29mm 1x ASC-2000 driver for cable length > 15m ASCF-Series for Large Airgaps

Airgap Flux Probe for Rotor Interturn short Circuit Detection of Turbo Generators ASCF-Series for Large Airgaps Technical Data Electrical ___________________________________________________________________ Magnetic Field Widthstand: Output Signal: Sensor: Operating Temperature Range: -50 .. +155°C ASCF-325xx Series Base Dimensions For airgaps: ASCF-528xx Series Base Dimensions For airgaps: Cable Lengths Cable Diameter Sparks Instruments SA reserves the right, without further notice, to change the product specifications and/or the information on this document to improve reliability, functions...