Capacitives PD Sensors

Partial Discharge Sensors

 

Sensors are classified according Nominal Voltage of the electrical machine

 

General Description

The 80pF or 1000pF coupling capacitor is a sensor used for online and offline partial discharge measurements on rotating machines. The sensor will be usually installed at the busbar or on the high voltage terminals of the rotating machine. Permanent or temporary partial discharge detectors / analyzers can be connected via standard RG58 BNC cables to the couplers, usually by using a termination box in between. The PDC-1000 series has an integrated high voltage cable which will be connected via cable lugs to the high voltage busbars of the rotating machine to pickup partial discharge signals without any loss. A specially designed measurement impedance located in the base of the sensor allows to pick up partial discharge signals as well as the line frequency (1:2000). This allows to transfer partial discharge signals and line frequency signal over the same cable to the partial discharge detector. The Signal output is protected via 90V surge arrestor. The shield of te coaxial output is capacitive floating to avoid eddy currents in the signal cables due to high magnetic fields.

Applications

  • Hydro Generators
  • Turbo Generator
  • Windmills
  • Industrial Motors 
 

PDC7-1000

Partial Discharge Coupling Capacitor for 7kV rms@1000pF  

Key Features

  • Nominal Voltage 7kVrms
  • Build in Quadrupole with voltage reference output
  • Build in Overvoltage Protection
  • Capacitive floating Signal output to avoid Eddy Current Loops 

Technical Data

  • Nominal Voltage: 7kV rms
  • Capacitance: 1000pF
  • Frequency Range: 50/60Hz 
  • PD Level @ Un: < 5pC
  • Voltage Divider: 1:2000
  • Signal Output Type: BNC female
  • Withstand Voltage (1min): 23kVrms
  • Operating Temperature Range: -20 .. +125°C

 

 

 

Partial Discharge Coupling Capacitor for 12kV rms@1000pF

Key Features

  • Nominal Voltage 12kVrms
  • Build in Quadrupole with voltage reference output
  • Build in Overvoltage Protection
  • Capacitive floating Signal output to avoid Eddy Current Loops

Technical Data

  • Nominal Voltage: 12kV rms
  • Capacitance: 1000pF
  • Frequency Range: 50/60Hz
  • PD Level @ Un: < 5pC
  • Voltage Divider: 1:2000
  • Signal Output Type: BNC female
  • Withstand Voltage (1min): 32kVrms
  • Operating Temperature Range: -20 .. +125°C

 

 

Partial Discharge Coupling Capacitor for 17.5kV rms@1000pF

 

Key Features

  • Nominal Voltage 17.5kVrms
  • Build in Quadrupole with voltage reference output
  • Build in Overvoltage Protection
  • Capacitive floating Signal output to avoid Eddy Current Loops

Technical Data

  • Nominal Voltage: 17.5kV rms
  • Capacitance: 1000pF
  • Frequency Range: 50/60Hz
  • PD Level @ Un: < 5pC
  • Voltage Divider: 1:2000
  • Signal Output Type: BNC female
  • Withstand Voltage (1min): 45kVrms
  • Operating Temperature Range: -20 .. +125°C
 

Partial Discharge Coupling Capacitor for 24kV rms@1000pF

 

Key Features

  • Nominal Voltage 24kVrms
  • Build in Quadrupole with voltage reference output
  • Build in Overvoltage Protection
  • Capacitive floating Signal output to avoid Eddy Current Loops

Technical Data

  • Nominal Voltage: 24kV rms
  • Capacitance: 1000pF
  • Frequency Range: 50/60Hz
  • PD Level @ Un: < 5pC
  • Voltage Divider: 1:2000
  • Signal Output Type: BNC female
  • Withstand Voltage (1min): 61kVrms
  • Operating Temperature Range: -20 .. +125°C

 

Sparks Instruments SA

Headoffice :

route de montena 85

CH-1728 Rossens

Office Number:
+41 (0)26 301 30 06

FAX
+41 (0)26 301 30 08

Sales & Marketing

+41 (0) 78 889 03 53

+41 (0)26 301 30 06

sales@sparksinstruments.com


Production and Quality Control

route de Montena 85
CH-1728 Rossens

Technical Support

+41 (0)26 301 30 05

+41 (0)26 301 30 04

support@sparksinstruments.com


LINKEDIN.com