Ed-Lab 2000 Series Interactive High Voltage Training System backhome
Ed-Lab 2000 Series Interactive High Voltage Training System is a complete rugged training system that enable s students to perform experiments in High Voltage.

Measurement of partial discharges in pC and RIV in mV.
Variable selective filter, 600 kHz to 2400 kHz. Alternatively fixed bandwidth wide band filter, 40 to
220 kHz. Built-in oscilloscope to display PD pulses on elliptical time base and window gating facility to mask unwanted noise.
Facility to conduct balance mode PD detection to minimise the background noise
 
FEATURES
  • The measured partial discharge intensity is displayed either in pC or in mV in accordance with IEC 60 270 / IS 6209 or NEMA 107. According to IEC 60 270, the measured quantity shall be multiplied by a correction factor, which considers the circuit characteristics of the complete test arrangement.
  • With built-in correction circuit it is possible to incorporate the correction factor into the display. The actual partial discharge intensity can then be read directly without the usual calculations. At switch position "CORR", the correction factor is displayed directly.
  • The PC pulses are tapped from the analogue output terminal and displayed on the built-in oscilloscope.
  • The power frequency test voltage can be displayed with the partial discharge pulses in an elliptical time-base and periodically recurrent interference pulse can be blanked in the oscilloscope display, automatically eliminating their evaluation in the partial discharge meter.
  • Built-in provision is available to conduct the bridge type PD detection, which is useful to suppress
    external noise having attenuation level of ³ 40 db.
Ed-Lab 2000 Series Interactive High Voltage Training System  
The measurement of partial discharges is non- destructive test on electrical apparatus or equipment.
The measured quantities are valuable data to determine the quality of an insulation. In high-voltage
test technique, special importance is therefore attached to measurement of partial discharges
The reading of partial discharge intensity is in Pico-coulombs (pC) or, alternatively, radio interference voltage (RIV) in microvolts (mV). The partial discharge/RIV measuring system
consists of:
1. Partial discharge meter which is the basic measuring unit with built-in oscilloscope It has provisions for direct measurement as well as bridge measurement.
2. Filter insert -option for either Narrow band or Broad Band.
3. Measuring impedance and coaxial connecting cable.
4. Pulse generator.
Everything is protected against damage. The Ed-Lab trainer is designed so that supplies and components will not burn out due to any incorrect wiring on the panel. Available in both suitcase and console configurations. Some topics require optional add on modules.
  Measurement Principle - Partial discharges in or on the test object cause charge transfers in the high-voltage circuit, giving rise to voltage pulse variations on the measuring impedance (Quadripole). These are evaluated by the partial discharge meter. The filter with adjustable centre frequency allows to select parts of the highvoltage spectre for measurement purposes.  

 

Click here to download the complete data sheet on the Model CES 2000 Interactive High Voltage Trainer

The above datasheet on the Ed-Lab Model CES 651 Interactive Electronics Trainer, requires Adobe Acrobat Reader. If you do not have Acrobat installed on your computer, click here to download Adobe Acrobat Reader