Partial Discharge
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PARTIAL DISCHARGE www.haefely.com

The best team in the business 3 Product line overview 4 Partial discharge measurement 6 DDX8003 Advance digital PD detector with pulse discrimination_14 Partial discharge measuring impedances 16 Technical specifications

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Product line overview

Product line overview Radio Interference Voltage (RIV) Cable fault location PRODUCT LINE OVERVIEW

PARTIAL DISCHARGE MEASUREMENT Partial discharge testing is a standard 1 2 3 method of determining the quality of electrical insulation. Partial discharges can be caused by poor design, manufacturing faults, mechanical damage, aging, etc. The ability to measure low levels of partial discharges is referred as sensitiv7 ity. As partial discharges happen inside the test object, only indirect effects can be quantied. Back in 60’s the general layout (see beside diagram) and technical specications of the measuring device 1. Regulating transformer were dened. The IEC60270, succesor to 2. Line lter...

MEASURING BAND The frequency measuring band affects drastically the partial discharge test. A measurement band which is within the IEC or ANSI requirements has to be selected to get reliable measuring results. All our detectors measure within the IEC/ ANSI dened frequency band. f1 = Lower limit frequency f2 = Upper limit frequency f = Measurement band APPLICATIONS Power transformers Distribution transformers Rotating machines Instrument transformers

pass/fail partial discharge testing; in- corporating all the basic functions of an analog detector and meeting all IEC and IEEE/ANSI standards for PD testing. This simple-to-use detector is controlled via 8 control buttons on the front panel. With the data acquisition/remote control soft- ware you can record PD pulses and create test reports easily. • Distribution Transformers • Current and Potential Transformers • Rotating Machines • Power Capacitors • Surge Arrestors • Research & Development

A 3U height rack unit contains all you need to perform a PD test. The digitalizer, the computer, the screen and the control keys are all included. No additional hardware needed beyond the coupling capacitor. Two graphical modes are available to view the test results: meter mode and scope mode. The threshold shown graphically (in color) together with different meter modes makes monitoring of the test results simple. DATA ACQUISITION & ANALYSIS Calibrate the measurement setup, set the maximum acceptable PD level and you are ready to start the test. Once the voltage is applied, an indicator on...

DDX 9121b MULTICHANNEL DIGITAL PD DETECTOR The DDX 9121b is the latest in the DDX family for partial discharge & radio interference voltage testing. With the DDX 9121b you can setup, control, test, monitor and generate test reports from a single computer. Its modular design makes the DDX9121b exible for any application. From single measuring input to simultaneous 9 measuring inputs. From traditional partial discharge according to IEC60270 to RIV measurement or PD under DC. From pass/fail test to advance phase resolution time analysis. The DDX9121b includes all you need, and has all you...

MODULAR DESIGN The built in frequency spectrum analysis and selectable frequency band let you optimize your setup in seconds. For normal partial discharge test on single phase test objects the basic DDX9121b is equipped with one measuring input. For distribution transformers, the DDX9121b - MUX option (enable by software code) add an embedded manual switch with “ALL” option. Partial discharge Trystor control Optimized measuring band USER ORIENTED INTERFACE The user interface has been designed to make PD readings easy. All options are grouped by categories, and the scope window shows all...

The advanced data acquisition and analysis software allows a wide variety of possibilities such as recording PD pulses of each and every test voltage cycle and analyzing them both in the time and phase domains. Both RIV voltage (mV, according to NEMA 107-1987) and partial discharge (pC, according to IEC 60270) measurements are done simultaneously, therefore both are performed in a single test without overstressing the test object. In addition, real time comparison between PD level and RIV is possible. With the pattern acquisition and analysis module, several two- and three-dimensional PD...

PHASE RESOLVING ANALYSIS SPECTRUM ANALYZER AND SCOPE SELECTABLE MEASURING BAND NON-SIMULTANEOUS PD INPUTS OPTION DDX9121B / MUX STANDARD CONFIGURATIONS Software key to enable the embedded non-simultaneous 4 inputs Fiber optic adapter to connect the DDX9121B and the computer DDX9121B / DC Software key to enable PD measurement under DC

DDX 7000 ADVANCED DIGITAL PD DETECTOR The DDX7000 Digital Partial Discharge Detector offers the high accuracy and exibility of digital technology, plus the real-time display and easy operation of an analog instrument. It is everything you want in a digital system with everything you know from an analog system, truly the best of both worlds. The DDX7000 provides the most intuitive and easy to use operator interface of all available digital PD testing systems. Data analysis is fast, easy and requires little training. Its Windows™ based software allows exible test recording and data export to...

ADVANCED ANALYSIS SOFTWARE PACKAGE AUTOMATIC CALIBRATION The DDX DA3 Software Package is an ideal tool for research and development or evaluation laboratories. It allows a user to collect data on partial discharge activity and display it in several different formats for easy analysis and comparison. Multiple blocks of data can be stored, with the option upon recall of viewing one, several or all of the blocks. Allowable displays include PD Value vs. Phase, PD Value vs. Time, Fingerprint, Intensity, and Fractal Chart and phase domain. The automated calibration routine ranges over each...