PD
voltage discharge within an insulator causing dielectric breakdown.
See Also: Partial Discharge, Partial Discharge Detection, Partial Discharge Monitors, PD Test, Partial Discharge Test
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TEV Antenna
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.
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I2C/SPI Exerciser and Protocol Analyzer
PGY-I2C/SPI-EX-PD
Prodigy Technovations Pvt. Ltd.
I2C Protocol Analyzer and SPI Protocol Analyzer (PGY-I2C/SPI-EX-PD) are the Protocol Analyzers with multiple features to capture and debug communication between host and design under test. PGY-I2C/SPI-EX-PD is the leading instrument that enables the design and test engineers to test the respective I2C or SPI designs for its specifications by configuring the PGY-I2C/SPI-EX-PD as Master/Slave, generating I2C/SPI traffic and decoding the I2C/SPI protocol decode packets
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TEM Antenna
TEM antenna is a broadband antenna with a flat response which makes TEM 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 TEM the optimal sensor for direct installation on medium voltage Switchgears and motors. It can be virtually applied in any electrical equipment provided that it has apertures or EM transparent surfaces.
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Partial Discharge Testing Equipment
AR700
PD Defect Location in High-Voltage Equipment Insulation by Acoustic Sensors To act on deteriorating insulation the source of PD must be known.The insulation defects produce partial discharges, which emits electrical impulses, radiation of electromagnetic waves as well as acoustic signals.The AR700 measures acoustic signals with multiple sensors spread over the transformer. Then the software determines the failure location using the time difference of all incoming signals. Finally, these coordinates are shown in a 3D model of the transformer. AR700 device is used for measuring of acoustic signals on the external surfaces of gas-insulated breakers and substations, power transformers and other tank high-voltage equipment. The acoustic signals are caused by partial discharges in the insulation, which is the sigh of the defects.The advantage of “AR700” device is the quick installation of the acoustic PD sensors on the external surface of high-voltage equipment tank. The sensors have magnetic holder that is why there is no need to de-energize the equipment for the sensors installation. “AR700” device has 4 syn-chronic channels for acoustic signal measurement. This gives the possibility not only to find the defects in the insulation, but also to locate them. The location function of the “AR700”device is unique for acoustic devices.
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Partial Discharge Tester
19501-K/19500
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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Partial Discharge Expert Diagnostic and Location System
PDExpert
Power Monitoring and Diagnostic Technology Ltd.
The PDExpert is PMDT's third level of Partial Discharge (PD) Expert Diagnostic and Location System. It is a powerful, portable, multi-channel system of impeccable design used to analyze and pinpoint PD signals coming from a power asset within centimeters while the power system is energized. The system consists of UHF, AE, HFCT and ultrasonic sensors, one advanced UHF/PD signal processing unit, one oscilloscope, filters and other accessories.The system employs ultra-high speed data acquisition and advanced digital signal processing technologies, compares the UHF, AE and HFCT signals of different frequency ranges to determine if it is PD or noise, and locates the source in power assets accurately by utilizing Acoustic-Electromagnetic Combination Location Technique, time Difference of Signals' Arrivals (TDOA), and 3D Positioning Technology.
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PD free AC Hipot Test Set
FPA Series
FPA Series test sets perform field or factory testing on larger electrical apparatus, including motors & generators, switchgear, bushings, bus duct, etc. This series offers the higher kVA ratings needed (0-6/12 kV AC @ 6 kVA), but is still packaged for portability.
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Superior Handheld Partial Discharge Detector
PDStar
Power Monitoring and Diagnostic Technology Ltd.
PMDT is proud to present one of our latest innovations, the PDStar. It integrates On-Line Partial Discharge (OLPD) testing and Infrared testing for MV and HV equipment, which combines UHF, AE, Ultrasonic, HFCT, TEV, and Infrared testing technologies. It is applicable for online PD testing, as well as abnormal heating and defect detection on all types of substation equipment. PD amplitude, PRPD, PRPS, and infrared spectrums provide critical data for determining the operational condition of electric power equipment. It connects to the PMDTCloud via Wi-Fi/3G/4G to upload test data, download test tasks, and receive diagnostic results in real time. Another uniquely advanced feature of the PDStar is that it integrates with a 100 MSPS (Mega-Samples per Second) HFCT signal processor, which greatly improves the performance for power cable OLPD testing.
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Thin Film
Substrates: ceramics, glass, soft substrates. Conductor: Au, Pt, Pd, Ni, Cu, Ta, WTi. Dielectrics: Polyimide, SiN. Micro strip and coplanar design. Through hole metallisation, filled via. Integrated resistor and capacitor. Air bridges. Polyimide Multilayer.
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Partial Discharge Simulation Devices
Hangzhou Xihu Electronic Institute
Simulation device of cable PD faults, simulation device of switchgear PD faults, simulation device of GIS PD faults, simulation device of transformer PD faults.
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Partial Discharge Testing Equipment
3i
The portable multipurpose 3i device (Intellectual Insulation Indicator) is for eff ective high-voltage equipment insulation monitoring on-line. The 3i device measures and analyses partial discharges (PD). For eff ective PD measurement and noise rejection, there are two types of sensors used in the device: the acoustic sensor and the TEV sensor. Both the sensors are built into the device case, and so do not need any connection cables. The device is supplied in a strong metal case; at the faceplate there are the colored screen and two buttons: power button and function button.
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PSA-3000 / PSL-3000 Software
Included with every PSE test instrument in the PSA-3000 family are PSA Interactive (GUI) and PowerShell PSA (script automation) software. Whether running test suites, setting up PD emulations, analyzing specific PSE behaviors, or automating QA tests, PSA Software enables high productivity and rapid results.
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Ethernet Powered Device Analyzer
PDA-604A
Emulate any 802.3at Type-1, Type-2, 802.3bt Type-3, or Type-4 PSE powering 2 or 4 pairs at all possible PD input voltages. Optionally supports 802.3at and 802.3bt Ethernet Powered Device Conformance Test Suites and LLDP Emulation and Analysis.
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ITSM Synchro
The Impulsive Test Synchronization Module (ITSM) is a device aimed at generating a digital synchronization signal, to use the PDBaseII system for impulsive voltage PD test. The digital synchronization signal generated by the ITSM, is synchronized with the voltage impulse of the impulsive source (voltage generator). The ITSM must be connected between the DIN channel of PDBaseII and the output of the synchronization sensor (e.g. capacitive coupler). The ITSM provides also a low voltage signal reproducing the impulsive voltage source.
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40Gb/s Coherent Receiver
The integrated 40-Gb/s DP-QPSK receiver incorporates two 90° optical hybrids with four pairs of balanced photodetector (PD) and four linear TIAs into a single butterfly package. Unlike other technologies in which the polarization beam splitter (PBS) and/or the power splitter (BS) are not included, Optoplex’s receiver includes both of them with the optical hybrids, PDs and the TIAs to offer a fully integrated solution which will benefit users in terms of completely removing fiber routing and the skew management. The integrated receivers work at the symbol rate up to 12.8GBaud/s.
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PIN-TIA
The fiber-optic coaxial PIN-TIA receiver module is designed for SONET/SDH fiber-optical communicationnetworks, using reliable InGaAs PIN photodiode (PD) highly integrated with low noise transimpedence amplifier(TIA) to convert a long wavelength input optical signal into a differential (or single) output. It is a highly reliablemodule with excellent performance.
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Advanced Handheld Partial Discharge Detector
PDetector
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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Data Analysis
Power Monitoring and Diagnostic Technology Ltd.
PMDT Engineers are always available to review your test samples and to provide guidance to users in the field. Our PD experts have the ability to accurately analyze various types of field test data based on PRPD/PRPS spectrums, waveforms and audio files collected during a field test.
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Portable PD Analyzer
AQUILA
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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PoE LLDP Emulation (PSE) & Analysis for 802.3at & 802.3bt
The IEEE 802.3 specifications require that Type 2, Type 3, and Type 4 PDs implement PoE LLDP and use the Power via MDI TLV for power negotiation. This requirement therefore applies to any PD that draws more than 13 watts. The PDA-600 family includes an option to flexibly emulate any PSE while capturing and analyzing the LLDP power negotiation protocol from a PD.
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Sensor Technology
Power Monitoring and Diagnostic Technology Ltd.
PMDT is the only manufacturer to utilize all 5 types of online partial discharge sensor technology. Using multiple sensing methods ensures that PD activity is always discovered, located, and characterized. PMDT's handheld PDetector and PDStar units have more capability than the high-end diagnostic equipment of the past. The small handheld, battery powered unit can completely perform the test and analysis without the need of a PC. PDetector, PDStar, and PDiagnostic instruments feature high-resolution phase-resolved analysis of PD signals (PRPD and PRPS) in real time, so you get your test results instantly!
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Spiral Antenna
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.
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Rapid PSE And Chained Data Test Of 4-Pair And 2-Pair PSE's
Chained Data Test Support for 802.3at and 802.3bt PSE's
Intuitive graphical user interface. Configures up to 24 2-Pair or 4-Pair ports for "snaked data path" testing. Verifies all PSE connections in the defined data path. Sequences user-defined PD emulations and PSE powering.Verifies powering to user-defined loading on all selected ports. Configures looped data paths across the selected ports. Support of 802.3at / 802.3bt LLDP power negotiations (PSL-3424L).
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Solution for Industrial Monitoring
PDScope
Techimp PDSCope is a brand new product of the PDCheck family particularly designed to suit all the requisites of the Techimp TiSCADA systems for on-line monitoring of diagnostic quantities in electrical assets.Techimp PDSCope is a powerful PD analyzer based on Techimp TF Map technology (patented) allowing preliminary noise rejection and automatic calculation of statistical parameters relevant to Partial Discharges.
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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
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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Portable Switchgear Partial Discharge
PD-SG1
The PD-SG1 is a dual transducer Switchgear PD detection instrument. The unit detects TEV signals generated by internal discharge, as well as acoustic discharge generated by surface tracking or corona.
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Power over Ethernet (PoE) DC/DC
An isolated 25W, PC/104-Plus form factor, 802.3af/at compliant, PoE PD power supply. The Class 4 signature supports up to twice the power of 802.3af compliant PD devices. Designed to power a single board computer from DC power extracted from a CAT5 cable sourced by an 802.3af/at compliant PSE device configured as either an endpoint or midspan device.
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Handheld Online PD Detector
PD-SGS
BAUR Prüf- und Messtechnik GmbH
Quick identification of PD activities in switchgear and cable accessories. The BAUR PD-SGS handheld online PD detector is used to conduct rapid initial tests for PD activities on live switchgear. Potential weak points are immediately signalled acoustically and numerically.* Initial rapid condition evaluation of switchgear and cable accessories during mains operation* Ideal for quick checks of MV and HV switchgear* Two integrated sensors:TEV sensor records PD on the surfaces of switchgearsAcoustic sensor records PD inside switchgears* Greater safety for test personnel switchgear tested for safety risks before starting work
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Multi-Channel PD System Locator
PDiagnostic Series
Power Monitoring and Diagnostic Technology Ltd.
The PDiagnostic is a portable system that utilizes Ultra-High Frequency (UHF), Acoustic Emissions (AE), High-Frequency Current Transformer (HFCT), and Transient Earth Voltage (TEV) sensors to detect, analyze, and locate the PD signals in real time for a multitude of medium and high voltage electric power equipment.The multi-channel PDiagnostic system locates PD on power equipment down to a meter by utilizing Acoustic-Electromagnetic Combination Location Technique, Time Difference of Signals’ Arrival (TDOA), Partial Discharge Signals Separation (PDSS), and 3D Positioning Technology with PC software included.The system features advanced PD diagnostic capabilities, automatic PD type pattern recognition, and accurate PD location capabilities. The PDiagnostic is an ideal trouble-shooting tool for your PD programs. Severity is determined and maintenance suggestions are provided accordingly.
