Partial Discharge
voltage discharge within an insulator causing dielectric breakdown.
See Also: Partial Discharge Detection, Partial Discharge Monitors, PD, PD Test, Partial Discharge Test
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Product
Online PD Spot Tester
Liona
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Cable testing and diagnostics with the BAUR liona. Liona is a portable online PD spot tester for measuring and locating partial discharges in cables and switchgear during normal mains operation. Liona lets you test cable systems and electrical equipment online without switching off partial discharge activities, and then generate trend analyses. Even a PD spot test (duration: 5-10 minutes) is capable of reliably assessing the current status of your system.* Automatic PD detection during normal mains operation (without switching off the cable route)* With DeCIFer technology: PD identification based on 500 million measurement results* Precise online PD mapping with PD transponder
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Product
Partial Discharge Measurements
MPD 500
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The MPD 500 simplifies routine factory partial discharge measurements for electrical insulation systems. Engineered with OMICRON's long time experience, the MPD 500 is optimized for routine tests in high throughput environments.
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Electrical Safety Multi-Analyzer
TOS9300 Series
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The TOS9300 series is a high performance electrical safety analyzer that complies to a wide range of universal standards. Hipot, Insulation Resistance, Ground Bond, Leakage Current (touch current and protective conductor current) and partial discharge can all be tested. A total of 6 models are available for standard compliance tests in a wide variety of applications including R&D, quality assurance manufacturing lines and laboratory tests.
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Product
Online Partial Discharge Alarm System
PD Annunciator™
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The PD Annunciator™ unique design consists of a three channels acquisition module paired with sensors of your choice, most commonly TEV and Acoustic or HFCT. With many advancements and innovations, the PD Annunciator™ handles partial discharge monitoring on metallic cabinets using our proven and advanced technologies.
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Expert Partial Discharge Detector
XDP-II™
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The well-established XDP-II™ is a battery-operated portable device allowing partial discharge detection and analysis. The data is saved in its internal memory for local or further analysis on the PC-based XDP-SOFT™. Paired with the proper accessories, the XDP-II™ becomes a powerful solution for many applications such as Cable Joints and Elbows, Switchgear, Offline, Acoustic, TEV, Rotating machines, Transformer, etc…
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Product
Partial Discharge Tester
19501-K/19500
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Chroma 19501-K partial discharge tester combines hipot test and PD (partial discharge) detector functions in one instrument. The device is capable of a maximum 10kV AC output with leakage current measurement range of 0.01uA and a minimum partial discharge detection of 1pC. The tester is specifically developed to test high voltage semiconductor components and high insulation materials.
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Qualification and Quality Control Tests
Techsquare
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New IEC standards, IEC 60034-18-41 and IEC 60034-18-42, have been issued to define the procedures for testing partial discharge inception voltage and the long-term performance (endurance) of Type I and Type II insulation systems used in rotating machines fed from voltage converters. Voltage impulse generators are required at least to test turn insulation, but they would be recommended for any testing under power electronics supply because of their capability to simulate the real electrical stress conditions. More generally, any type of electrical insulation system when subject to impulsive voltage waveform during life should be carefully evaluated in terms of partial discharge and endurance behaviour. This is why voltage impulse generators able to provide impulses with controlled amplitude and frequency are needed to face this new testing challenge.
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Product
TE-Metrology
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HIGHVOLT Prüftechnik Dresden GmbH
The TE measurement complements the high voltage test and is part of the routine and type testing of numerous electrical devices. It is one of the most important non-destructive methods for detecting faults in electrical installations. The breakdown of an insulating material usually occurs at an internal weak point, which usually already shows a partial discharge activity in advance. For this reason, measuring partial discharges can help prevent costly damage. The TE measurement is thus used for quality testing and diagnosis in the factory as well as during on-site testing of cables, GIS, power transformers and transducers or rotating machinery and their components
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Product
Partial Discharge Meter
TMG
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The partial discharge meter TMG was developed for Partial Discharge tests according to VDE 0434 and IEC 60270.
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Product
Advanced Handheld Partial Discharge Detector
PDetector
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Power Monitoring and Diagnostic Technology Ltd.
The PDetector is an ideal device for On-Line Partial Discharge (OLPD) testing of MV and HV equipment which employs all 5 types of OLPD sensor technology: Ultra-High Frequency (UHF), Acoustic Emissions (AE), Ultrasonic, High Frequency Current Transformer (HFCT), and Transient Earth Voltage (TEV). The information from multiple sensors gives the PDetector the versatility to detect all types of PD in all types of substation apparatus. The exact type of PD activity can be determined effectively using multiple on-screen data spectrum analysis.
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Product
Lightning Rod Flaw Detector
PADD
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We developed the PADD for the detection of internal and external partial discharges on metal oxide lightning rods. Defects can cause radio interference in communication systems or TV images, interference whose origin is very difficult to locate. We have developed a unique technology for detecting radio frequencies for use under voltage.
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Product
Portable PD Analyzer
AQUILA
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A compact and portable Partial Discharge acquisition unit, which allows to detect and analyze partial discharge activities in all electrical assets: from power cables to transformers, rotating machines and switchgears, together with the right combination of sensors and accessories. AQUILA comes with a full range of options, ideal for field testing.
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Product
Cable Diagnostic Tools
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For non-destructive diagnostic testing to determine the quality of a cable’s insulation with minimal risk of failure, HVI recommends tan delta and partial discharge testing for valuable diagnostic data about cable insulation integrity. Both use a VLF source to perform elevated voltage, off-line testing. Tan delta testing measures insulation health, while PD identifies specific problem areas and assesses their severity.
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Partial Discharge Detector
PDD 100
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The Insulator partial discharge detector is a state-of-the-art technology used by NASA. The Parabolic design of the disc helps to maintain and detect ultrasound from safe distance of 100 Meters. Enhanced ultrasound detection is provided to the device, by combining the features of the already proven Ultra sound sensing technology with extended range and sensing capabilities. A pistol like grip laser pointer, and rifle sights make the Insulator partial discharge detector easy to handle and use.
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Horn Antenna
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Horn antenna is a partial discharge sensor designed to receive electromagnetic (EM) emissions from a PD occurring in electric assets like GIS and GIL or MV and HV power transformers. It is a broadband antenna with a flat response which makes Horn antenna suitable in a number of different applications. It has been optimized to operate in a frequency range suitable for PD activity monitoring and it was designed to provide maximum sensitivity and high gain.
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Product
Dielectric Loss Tangent Testing Instruments
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Insulation materials in electrical equipment are used between a pair of electrodes; therefore it can be expressed as capacitors. Applying AC voltage to a capacitor with insulation materials causes an energy loss due to the leak current, the dielectric polarization, and the partial discharge. Because of this, the phase of the capacitor current is more delayed than that of a zero-loss current (reactive current) flowing in an ideal insulation material. The delay angle is called "Dielectric Loss Angle", and the tangent is "Dielectric Loss Tangent" (tanδ). Please refer to the technical guide explained in detail.
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Product
Spiral Antenna UHF Trafo
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UHF Spiral antenna is a partial discharge sensor designed to receive electromagnetic (EM) emissions from a PD occurring in the monitored asset. It is a broadband antenna with a flat response which makes Spiral antenna suitable in a number of different applications. It has been optimized to operate in a frequency range typical for PD activity and it was designed to provide maximum sensitivity and high gain. Its compact and robust design (passive sensor) makes Spiral antenna the optimal sensor for direct installation on high voltage Transformers. It can be virtually applied in any electrical equipment provided that it has apertures or EM transparent surfaces. Contact our sales department for consulting.
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Product
Flexible Magnetic Coupler
FMC
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The FMC (Flexible Magnetic Coupler) is a partial discharge sensor whose working principle is based on a direct magnetic coupling with the cable conductor and shield.It picks up a magnetic signal given by PD activity. His compact and robust design makes the FMC the optimal sensor for direct installation on cables and accessories such as joints and termination.This sensor has a sensitive side which has to face to the object under test, while the other side (shielded) reject the noise from the environment.
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Real-Time Online Monitoring to Detect and Analyze Potential Partial Discharge (PD) Signals and Insulation Faults using UHF, AE, and HFCT
PDMonitor
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Power Monitoring and Diagnostic Technology Ltd.
The PDMonitor, which utilizes Ultra High Frequency (UHF), Acoustic Emission (AE) and High Frequency Current Transformer (HFCT) sensors and is designed to conduct real time online monitoring to detect and analyze potential Partial Discharge (PD) signals and insulation faults before they lead to breakdown or catastrophic failure in power assets. The system provides the developing trend of the PD, when occurring, as alarms in real time, thus helping to predict the insulation degradation status of the asset, prevent sudden accidents, and provide an effective database for Condition-Based Maintenance (CBM) of power assets.
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PD Measuring System
TEM
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Partial discharge test system for laboratory or on-site measurement according to VDE 0434, IEC 60270 and EN50178 consisting of:*Partial discharge meter TMG*High-voltage coupling capacitors for decoupling of the PD pulses*Partial discharge calibrator TPK for determining the correction factor in the PD test circuit
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Product
Shielded Rooms
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HIGHVOLT Prüftechnik Dresden GmbH
Electromagetic field and line-conducted interference needs to be eliminated in order to measure low-intensity partial discharges with a PD background noise level (≤ 1 pC) in accordance with IEC 60270.
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Product
Partial Discharge Detector
PXDP-II
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The PXDP-II partial discharge meter is a portable device that performs detection and measurement of partial discharges in electrical devices or components. It records partial discharge measurements for analysis and diagnosis through the optional PC software. The PXDP-II can be used in various applications and complies with IEC 60270.
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Partial Discharge Tester
GTPD-4C
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GTPD-4C partial discharge comprehensive tester is the new generation of digital PD measurement and analysis instrument. The instrument has a strong ability of comprehensive analysis of partial discharge and detection of partial discharge in small signal and strong interference environment. With different accessories, it can measure and locate the partial discharge in any high voltage electrical equipment. It can realize testing the transformer partial discharge by applying the voltage on the three phases simultaneously.
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Product
Ultrasonic Leak Detection Camera
Leakshooter LKS 1000-V.2
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1st ultrasonic compressed air, gaz and vacuum leak detector with camera. Specialy dedicated to visualize the spots where compressed air is leaking, the LEAKSHOOTER LKS 1000 – V.2 has many other applications such as : steam trap monitoring, bearing monitoring, electrical applications like partial discharge, corona effects, punctured isolators, electrical tracking detection.
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Product
Partial Discharge Locator
INDIPOINT
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Ultrasonic directional microphone for the location of PD The very best maintenance instrument for partial dischargetrapping in medium and high voltage plant.
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Product
Universal Partial Discharge Measurement and Analysis System
MPD 800
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Our MPD 800 universal partial discharge (PD) measurement and analysis system represents the next generation of our widely-used and innovative MPD PD testing technology. Enhanced and newly-added hardware and software features ensure highly-sensitive multi-channel PD measurements for reliable, industry-standard PD testing on a variety of electrical equipment and components.
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Substation Series Testers
GTPD-92
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Partial discharge（PD） is a pulsed discharge that produces a series of physical phenomena and chemical changes such as light, sound, electrical and mechanical vibrations in and around electrical equipment.
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Product
Inductive Sensor
HFCT Ø 30-39-50mm
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Techimp HFCT is an inductive sensor for partial discharge measurements. It is suitable for on/off line PD tests on many electrical systems (cables, transformers, rotating machine, etc..). It has to be applied to the ground connection of the system to be tested.
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Acoustic Imaging Cameras
Si1 and Si2 Camera series
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Helps you significantly lower costs associated with mechanical bearing issues and partial discharge on electrical equipment. It also enables you to drastically reduce leaks in your facilities, cutting down expenses related to compressed air and gas leaks.
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Product
TEV Antenna
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TEV sensor is a partial discharge sensor whose working principle is based on a direct Capacitive coupling with a Switchgears earthed metal case. The two ends of TEV sensor can be coupled magnetically to virtually any opening on a metal Surface. It picks up the electric signal given by PD activity onto the two metallic surfaces. Thanks to its special design has high sensitivity, larger than other single ended TEV sensors. His compact and robust design (passive sensor) makes the TEV the optimal sensor for direct installation on medium voltage Switchgears.
