Dielectric Analyser DIANA (LDV-4)  
 
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Applies a new method for measuring the loss factor of insulating materials

 
Applications:
  • Evaluation of dielectric properties
    • Loss factor
    • Test object capacity
    • Occurrence of PD
 
LDV-4 Brochure
LDV-4 Technical Paper
LDV-4 Demo Software
LDV-4 Display Samples
LDV-4 RFQ
LDV-4 Slide Show
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Specifications:
(in connection with the standard HV test supply)
  • Max. peak value of the test voltage (50/60 Hz) - 5 kV
  • Test object capacity range (test voltage 5 kV peak) - 0,01 pF - 2500 pF
  • Loss factor range (test voltage 5 kV peak, test object capacity > 10 pF) - 0,1 - 0,0001
  • Minimum measurable power frequency (60/60 Hz, test voltage 5 kV peak) - 0,01ľA
  • Minimum detectable cumulative PD charge per 50/60 Hz cycle (test voltage 5 kV peak) - 0,5 pC
  • On request by the user the parameters(test object capacity, magnitude and frequency of the test voltage) can be changed optionally
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Characteristics:
  • Applies a new method for measuring the loss factor developed by Lemke Diagnostics
  • Measuring principle based on the analysis of the current through the test object
  • High accuracy in measurement because of digital evaluation
  • Simple balancing procedure in contrary to the classical Schering-bridge
  • Fast changes of the tan can also be simply recognized and evaluated, as for instance in the case of investigation the temperature dependence of the loss factor
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