May 23, 2013
 Measurement Systems
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Partial Discharge Detection Equipment
Partial Discharges (PD) are evidences of a degrading insulation capacity, which will lead to cost-intensive repairs and can predictively lead to an electrical breakdown of the HV apparatus.  Partial Discharges are mainly caused by natural circumstances or by accelerated aging of the HV insulation. But also manufacturing or installation failures can lead to harmful partial discharges. Therefore, the goal of partial discharge measurements is to detect the partial discharges in an early stage and to evaluate them in a proper way. 
Thus, periodic (as well as permanent) partial discharge measurements have become one of the main criteria in assessing the quality and condition of HV equipment such as transformers, generators, switchgears and cable systems.    
 
Partial Discharge Detector
   

Tan Delta / Dissipation Loss Factor Measurement Equipment
What is the Dissipation Factor / Loss Factor?
The dissipation factor Tan Delta is the ratio between the resistive power loss and the reactive power loss of the insulation material.
 Hence, the dissipation factor Tan Delta plays a major role as measuring parameter for the integral condition assessment of HV insulations. Both age-related disorders as well as manufacturing and assembly flaws can be diagnosed. 

Compared to the classic Schering Bridge method, our measuring instruments feature a simple and fully automatic dissipation factor balancing. The use of optical separation allows the safe HV testing of grounded test objects and greatly reduces the influence of electro-magnetic interferences. Capacitance and other relevant parameters can be displayed directly. 

Dissipation Factor / Tan Delta Equipment
   
Measurement Accessories
HV TECHNOLOGIES has many resources for measurement accessories and components such as:
  • HV Dividers / Capacitors
  • Couplers and Sensors
  • PD Calibrators
  • Current Transformers
  • Wattmeter
  • Bushings
  • Filters & Noise Reduction
  • Measuring Impedances / Multiplexers
  • Other
 HV Dividers / Capacitors / CTs / Wattmeters