AE101 High Voltage Coupling Unit - testinstrumentsafrica.co.za
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High Voltage Coupling Unit Pre-Locating distances to cable faults are not always as simple as connecting a TDR (Time domain Reflectometer) unit to the cable under test. When the fault resistance is higher than 120 ohms the fault can simply not be detected by any TDR. The AE101 and PCA101 combination was developed to fill the gap that exists above 120 ohms to well within the M ohm range. It will easily detect and display information which can be analyzed by anyone with TDR waveform analyzing skills. Principles of Operation The AE101 is connected in series with any standard surge generator and faulty cable which provides the high voltage energy needed to temporarily break down high resistance cable faults. When flashover occurs at the fault the AE101 will limit the current flowing and allow the arc to burn for a slightly longer period. The AE101 allows the PCA101 to be coupled through suitable filters to the high voltage high energy pulse. Because burning arc’s are always a low resistance, we can now use TDR techniques. A single TDR pulse is superimposed on top of the HT pulse at the correct time. When the pulse arrive at the burning low resistance arc a short circuit is reflected to the TDR. The waveforms are then simply treated and analyzed as any other TDR waveform when a short circuit is detected. High Voltage Coupling Unit http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za http://www.instrumentsgroup.co.za Supplied by : Test and Measurement Instruments C.C. www.instrumentsgroup.co.za Email: [email protected] Tel: 0027 (0)11 683 4365
Transcript of AE101 High Voltage Coupling Unit - testinstrumentsafrica.co.za
High Voltage Coupling Unit
Pre-Locating distances to cable faults are notalways as simple as connecting a TDR (Timedomain Reflectometer) unit to the cable undertest. When the fault resistance is higher than120 ohms the fault can simply not be detectedby any TDR. The AE101 and PCA101combination was developed to fill the gap thatexists above 120 ohms to well within theM ohm range. It will easily detect and displayinformation which can be analyzed by anyonewith TDR waveform analyzing skills.
Principles of Operation
The AE101 is connected in series with anystandard surge generator and faulty cablewhich provides the high voltage energy needed
to temporarily break down high resistancecable faults. When flashover occurs at thefault the AE101 will limit the current flowing andallow the arc to burn for a slightly longerperiod. The AE101 allows the PCA101 to becoupled through suitable filters to the highvoltage high energy pulse. Because burningarc’s are always a low resistance, we can nowuse TDR techniques. A single TDR pulse issuperimposed on top of the HT pulse at thecorrect time. When the pulse arrive at theburning low resistance arc a short circuit isreflected to the TDR. The waveforms are thensimply treated and analyzed as any other TDRwaveform when a short circuit is detected.
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Supplied by : Test and Measurement Instruments C.C.
www.instrumentsgroup.co.za Email: [email protected]
Tel: 0027 (0)11 683 4365
TUVDIN EN ISO 9001:2000
Products available from ADRET test instruments:
Surge Generators Cable Identification System Burndown Unit Ground Microphone Amplifier Cable Reel System DC Pressure Testers AC Pressure Testers Combination Pressure Testers (AC+DC) VLF Pressure Testers Fault Pre-Locators Test Vans & TrailersSheath Fault Locators
SG 200032, SG 130032, SG 50016, SG 7505CI75, CI200
BU 3500GMA105
CRS302010PT3010PT
5010PT, 7010PT, 10010PT, 3042PTVLF20
PCA101+AE101
SFL16
Application
Specifications
Distributed By :
Coupling Unit
Operating Voltage Max 32kV DCWeight 20kgDimensions 350x200x300mm
Excluding lidEnclosure Aluminium, Electro
statically powdercoated
Pulse Withstand Rate 5 PPMCoupling Capacitor 100nFCoupling Resistor 300R
Accessories
Lid Aluminium with canvasbag for test cables
Test cables 2m HT Interconnection leadwith high current connector
Earth Lead 5m yellow/green
AE101
Power cable with phase to earth fault
Compactedsoil or
concrete
Acoustic wavespropagating away
from fault
SG130032
PCA101
Optional : Surge Generator, PCA101
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Supplied by : Test and Measurement Instruments C.C.
www.instrumentsgroup.co.za Email: [email protected]
Tel: 0027 (0)11 683 4365
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