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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High Frequency Current Transformer
HFCT Ø 140mm
Techimp Clamp High Frequency Current Transformer model 140 is an inductive sensor for partial discharge measurements. It is suitable for online /off line PD tests on : large diameter cables ; grounding rod bar ; etc. A TNC termination is available to connect the Clamp HFCT 140 to the TechImp PD analyzer : PDCheck , PDBase etc. The arrow indicates the requested input current (Iin) direction to get coherent output voltage (Vout) polarity respect to ground. When the sensor is installed with the arrow directed to ground, the detected voltage signal (Vout) has the same phase of the input current (Iin).
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Flexible Magnetic Coupler
FMC
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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Horn Antenna
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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HV Coupling Capacitors
Our high-voltage coupling capacitors are a main component of our partial discharge test stations. They serve to decouple the partial discharge impulses and act as a voltage divider, the output voltage of which is matched to our partial discharge measuring devices (with integrated voltage measurement) and peak voltage measuring devices. These high-voltage components are also available separately in their various designs, sizes, capacities and voltage ranges.
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Partial Discharge Measurement System
DAC-6021
DAC-6021 is a measurement system for testing Partial Discharge of high frequency equipment, power devices, stator coils, etc.Since the system combines Partial Discharge Measuring Instrument (DAC-PD-3) with Testing Corona-free Variable Frequency Voltage Source (DAC-WT-50) and Testing Shielded Chamber, most external noises are removed, and the measurement is safe.
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UHF PD Detector
Handheld online PD substation surveying system. The UHF PD Detector is the ideal tool for quick, non-invasive surveys in MV and HV substations and should be part of the toolkit for all maintenance and service teams. Due to its high measurement bandwidth, the UHF method provides accurate local online partial discharge (PD) measurements on HV components such as cable end-terminations, surge arrestors, voltage transformers and isolators.
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Field Testing Services
Power Monitoring and Diagnostic Technology Ltd.
PMDT offers three levels of testing services both domestically in the US and globally. With the best quality products, complete PD solutions, rich on-site testing experience, experienced partial discharge experts and field engineers, PMDT also provides PDExpert Services -- professional on-site partial discharge detection and location services to help the customers find the potential risks, evaluate the operating status of the electrical assets, and deliver complete and final problem solutions.
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Substation Series Testers
GTPD-92
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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Online Partial Discharge Alarm System
PD Annunciator™
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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Battery Cell Insulation Tester
Chroma 11210
Chroma Systems Solutions, Inc.
Chroma 11210 battery cell insulation tester is an instrument used for accurately measuring leakage current (LC) and insulation resistance(IR) of battery jelly-roll/dry-cell as well as other insulation materials. In addition to standard LC/IR measurement, the 11210 has a unique function that detects partial discharge (PD) or flashover that may have occurred inside the insulation material during the high voltage insulation testing process.
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Cable Partial Discharge (PD) Spot Testing And Locating
PrecisePD
PrecisePD is an on-line PD Spot Testing and PD location system for Cables and Switchgear with advanced signal processing, used for the detection of PD in high noise environments.
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Partial Discharge
Is a localized dielectric breakdown (DB) (which does not completely bridge the space between the two conductors) of a small portion of a solid or fluid electrical insulation (EI) system under high voltage (HV) stress.
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PDIV Tester for EV Motor
PDIV 500-T
Shanghai Dean Electrical Co., Ltd
Differing from partial discharge with high frequency pulse which produce sound and light phenomenon, the power frequency AC voltage reaches a certain threshold, can only produce instantaneous current leakage around the tested sample, it can be detected through discharge capacity (unit: PC) to evaluate partial discharge phenomena..The instrument PDIV 500-T is designed to put samples such as enameled wire, insulation paper/film, and electric motor stator in the High temperature / humidity environment chamber, applying a power frequency voltage with a programed rising speed, and prefect ground connection must be guaranteed , through the coupling capacitor as the medium, the continuous detection of discharge capacity against the voltages will create formulation between the Voltages and discharge capacities (pc), the software will find the discharge voltage threshold called PDIV.
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Tan Delta Measurement
TD Series
While partial discharge measurement is suitable for detecting electrical trees, tangent delta measurement – also referred to as dissipation factor measurement – detects water trees which have formed in the insulation of the device under test.
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Electrostatic Discharges
ESD3000
ESD3000 is the only ESD generator in the market using standard AA batteries to offer full flexibility to the user to replace them when needed.
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Partial Load Failure
PLF Device
The control device series “PLF” has been designed to monitor the partial and/ or total failure of the alternating current absorbed by loads driven by static switches and / or electromechanical relays.
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Battery discharge testers
The battery discharge testers are used to test batteries by discharging them in a specified mode: given resistive load, fixed discharge current, etc. Depending on the required power rating, various sizes are available from manually transportable testers to multiple electronically controlled units in a master/slave configuration. Five Series of standard models.
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Partial Pressure Monitor for RGA
PPM100
Stanford Research Systems, Inc.
The PPM100 is a stand-alone controller/monitor for SRS residual gas analyzers. It measures partial pressures from SRS RGAs and total pressure from up to four capacitance manometers. Graphical output is available on a touchscreen LCD display.
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Battery Discharge Tester
HTFD / 795
Wuhan Huatian Electric Power Automation Co., Ltd.
Through continuously regulating discharge current, constant discharge current at set value can be realized.
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Discharge Test System
The automated testing equipment automatically performs charge and discharge of energy devices such as the rechargeable batteries(cells, modules, packs) that are installed in PHV/ EV and mobile devices, while measuring the voltage, current, temperature, and impedance.
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Battery Charge and Discharge Tester
HTCFD / 790
Wuhan Huatian Electric Power Automation Co., Ltd.
The voltage monitoring information of single battery is simple, safe and accurate with wireless relay access.
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Battery Discharger & Capacity Tester
IDCE-2415CT
Fuzhou Fuguang Electronics Co., Ltd.
IDCE-2415CT Battery Discharger & Capacity Tester
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Glow Discharge Atomic Emission Spectrometer
GDS900
LECO's Glow Discharge Spectrometer (GDS) offers you state-of-the-art technology designed specifically for routine elemental determination in most conductive ferrous and nonferrous materials. The GDS900 features improved performance, stability, accuracy, and precision in steel, iron (including as-cast), aluminum, copper, zinc, nickel, cobalt, tungsten, and titanium materials, while featuring our user-friendly Cornerstone® brand software to help streamline your analysis.
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Battery Discharge Capacity Tester
KV Hipot Power Test Equipment Co.,Ltd
Battery Discharge Capacity Tester is used to perform discharge testing which is the verifiable method to determine actual capacity of battery systems.
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Glow Discharge Optical Emission Spectrometer
GD-Profiler 2™
The GD-Profiler 2™ provides fast, simultaneous analysis of all elements of interest including the gases nitrogen, oxygen, hydrogen and chlorine. It is an ideal tool for thin and thick films characterization and process studies.
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Discharge Units
ENTES Discharge Units are used in capacitor banks and provide quick discharge over short periods of time.
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Battery Discharge and Charge Tester
HD Power Test Equipment Co.ltd
Battery Discharge Charge Tester is mainly used for the charge test of the lead-acid battery of the backup power supply in the telecommunications, mobile, substation, railway transportation and pertrochemical industry power DC industries. It can proceed the discharge and charge for the batteries to extend the lift-time.
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Arrester Discharge Counter Calibrator
HTFZ-III / 451
Wuhan Huatian Electric Power Automation Co., Ltd.
Test whether the arrester of each type of arrester is operating normally.
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Battery Discharge Tester
HTFDK / 796
Wuhan Huatian Electric Power Automation Co., Ltd.
Through continuously regulating discharge current, constant discharge current at set value can be realized.
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Cable Discharge Solutions
Cable Discharge Event, or CDE, is an electrostatic discharge event that occurs when a cable is connecting to a piece of equipment with different potential. It occurs because there is a potential differential between the charge on a cable to be connected and the equipment. It doesn't matter if the cable is charged or if the equipment is charged. It's the potential differential that causes the discharge. ESDEMC develops commercial system for CDE reliability test and evaluation.
