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Partial Discharge Accessories
AC/DC Partial Discharge Test Syst.
DDX9101 Partial Discharge Detector
DDX9121B Partial Discharge/RIV
DDX7000 Partial Discharge Detector
DDX8003 Partial Discharge Detector
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Applicable Standards

IEC 60060 Part 1 & 2
IEC 60270
IEC 885-2 and IEC 885-3
IEEE Std. 4. 1995
ICEA T-24-380
ANSI C57.113
ANSI C57.124-91


Related Products

DX7000 & 8000 Partial Discharge Equipment
DDX7000 & 8000 Partial Discharge Equipment

Home | Products | Haefely-Hipotronics | Partial Discharge Equipment | DDX 9101 Digital PPD | Accessories for PD Testing


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DDX 9101 Digital Partial Discharge Detector - Overview

The DDX 9101 is the effective solution for routine pass/fail partial discharge testing, it has basic functions of an analog detector and meets all IEC and IEEE/ANSI standards for partial discharge testing. It's a straight forward replacement for older analog detectors of any make or model. The DDX 9101 simply measures the level of partial discharge and applied test voltage. It's designed to help you modernize your testing facility at an affordable price.

This simple-to-use detector is controlled via eight control buttons on the front panel. To operate the detector, select the desired operation mode and choose the appropriate amplifier settings. Calibrate the measurement setup, set the maximum acceptable PD level and start the test. Once the voltage is applied to the test object, an indicator on the screen tells you if the test has passed or failed.

The most distinguishing feature of the DDX 9101 advanced software is the ability to operate and monitor multiple detectors simultaneously. If you are a manufacturer performing routine PD tests in multiple bays, each DDX 9101 can be linked to a single PC enabling remote controls, monitoring and acquisition of all data.

DDX 9101 Digital Partial Discharge Detector

  • Settable PD threshold with indicator light when limit is exceeded.
  • Ethernet port for communication with PC (Optional).
  • Data acquisition and remote control software package.
  • Two modes of operation - meter mode or scope mode.
  • Compact, 3U (19-inch) rack mount case is ideal for integrating into a test system.


  • Perfect for pass/fail testing - you set the allowable PD level and the unit determines pass/fail.
  • Simple to Use - 8 buttons on the front panel are all you need to operate the detector.
  • Straight Forward Replacement - if you've got an old analog unit and need a cost effective, simple replacement, look no further than the DDX 9101.
  • Multiple detector - with data acquisition/remote control software you can operate and monitor multiple detectors at the same time.

General Specifications


Gain (Attenuation)

0dB to 75dB in five (5) dB steps

Attenuator Accuracy




Input Impedance

50 Ohms

System Noise

< 12V referred to input on highest gain range

High Pass Filters

20kHz, 30kHz, 50kHz, 60kHz, 80kHz

Low Pass Filters

100kHz, 200kHz, 400kHz, 500kHz


PD Measurement

PD Meter Resolution

10 bits displayed

PD Capture

8 bits (7 plus sign)

Phase Resolution


Linearity Error

< 1%


Voltage Measurement

Uncertainty of Scale Factor

< 1%

Linearity (10% to 100% Full Scale)

< 1%


11 bits

Measurement Modes

Peak, √2, true RMS


Local Mains, HV source (automatic)

Synchronization Lock Range

20Hz to 400Hz



Operating Temperature Range

0C to 40C

Storage Temperature Range

-10C to 75C


95% non-condensing


Ethernet Port


10Base T (optically isolated cable recommended)



Power Supply

100 Volts to 240 Volts AC, 40/70Hz


19-inch 3U case, 280mm deep




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