Top Partial Discharge Testing Equipment Manufacturers and Suppliers in China

Partial Discharge Testing Equipment

Searching for the best Partial Discharge Test System available on the market? Look no further. Here at DEMIKS, one of the foremost manufacturers and suppliers in China, we provide reliable PD test systems for all your testing requirements. Our systems are crafted to ensure accuracy and precision, allowing you to trust the safety and reliability of your electrical equipment. Trust DEMIKS for all your PD testing needs. Reach out to us today for more details.

PDIV Partial Discharge Test System DJF-1kVA-7.5kV

Purpose: Intended for PDIV and PDEV assessments of power apparatus and insulating materials within defined parameters.
Components: Comprised of an automatic industrial computer system and digital PD measuring instrument, as well as a configurable shielded cabin.
Features: Integrated design with stepwise voltage control, graphical interface, and electrically actuated shielding bin for robust sealing and enhanced protection.
Functionality: Facilitates data retrieval and generation of A4 formatted test reports at any time

PDIV Test System DJF-1kVA-7.5kV -1

PDIV Test System DJF-1kVA-7.5kV -2

PDIV Test System DJF-1kVA-7.5kV -3

PDIV Test System DJF-1kVA-7.5kV -4

Rated Capacity	1kVA	Current Accuracy	2%
Input Voltage	AC 220V/AC 380V	Voltage Accuracy	2%
Output Voltage	AC 500V-7.5kV	Operate Method	Automatic
Measuring range	0.1pC-10000nC	Mask background	<5pc

DJF-5kVA-5kV shielding PD Testing Chamber System

Purpose & Application: The DXC-101 Step Down Transformer Control Box provides ease of use and portability in industries for power maintenance like power supply, factories, metallurgy, power plants, and railways.
Key Features: Apart from monitoring functions (current meter, voltage indicator, etc.), safety and reliability is ensured with protection features (overcurrent protection, zero start).
Advanced Components: New time and current relays with wider timing ranges were installed, ensuring increased accuracy and enhanced safety.
Design & Portability: The unit’s lightweight, compact, and robust structure enables easy transport, movement, and maintenance.

DJF-5kVA-5kV With shielding chamber type -1

DJF-5kVA-5kV With shielding chamber type -2

DJF-5kVA-5kV With shielding chamber type -3

DJF-5kVA-5kV With shielding chamber type -4

Power input	AC220V ±10%	Power capacity	5kVA
Input current	23A	Output voltage	0-5kV
Voltage measurement accuracy	0.50%	Output current	1A
Current measurement accuracy	0.50%

PFTT Power Frequency No Local Partial Discharge PD test system

Purpose: Intended for PDIV and PDEV assessments of power apparatus and insulating materials within defined parameters.
Components: Comprised of an automatic industrial computer system and digital PD measuring instrument, as well as a configurable shielded cabin.
Features: Integrated design with stepwise voltage control, graphical interface, and electrically actuated shielding bin for robust sealing and enhanced protection.
Functionality: Facilitates data retrieval and generation of A4 formatted test reports at any time

Power Frequency No Local Partial Discharge test system -1

Power Frequency No Local Partial Discharge test system -2

Power Frequency No Local Partial Discharge test system -4

Rated Capacity	10KVA—500KVA	Current Accuracy	0.50%
Input Current	45-1350A	Voltage Accuracy	0.50%
Output Voltage	0-250-630V	Operate Method	Automatic
Output Current	0-40-850A	Power Input	AC 220V/380V ±10%

PFW Partial Discharge PD Test System

Application: For insulation and partial discharge testing of GIS, switchgear, transformers, insulators, and surge arresters.
Key Features: Low background partial discharge noise and high sensitivity to detection with strong anti-interference capabilities. Automatic control with multi-step voltage adjustment.
Safety and Reliability: Fully automated control software with primary and secondary automotive safeguards programmed with six safety protections
Design & Portability: The unit’s lightweight, compact, and robust structure enables easy transport, movement, and maintenance.

Partial Discharge Test System -1

Partial Discharge Test System -2

Partial Discharge Test System -3

Rated Capacity	5-1000kVA	Impedance Voltage	10%
Input Voltage	AC 220V/AC 380V	Output Voltage Waveform	Power frequency, sine wave
Output Voltage	AC 0-1000kV	Surface Temperature	Oil immersed:<55℃
			Gas: <50℃
Partial Discharge	Under rated voltage≤5PC	No-load Loss	0.2%-0.35%
Insulation Method	Oil, Gas	Allowed Continuous Operation Time	Once an hour

DJF-30kVA-150kV PD Test System--Smart integrated type

Purpose and Application: DJF-30kVA-150kV Smart Integrated Test System is critical auxiliary equipment for light testing transformers. It is extensively employed in power maintenance, factories, power plants, railways, etc.
Technological Advances: Features an Automation Test System Based on Intelligent Microprocessing Technology which requires no manual operation at any stage of the test.
Most Important Characteristics: High sensitivity of the detection; large range of tests performed, coverage of large sample capacitance value. Improvement of the functionality and convenience of the device through a 10.1 touch screen.
Design and Endurance: Enhanced operational characteristics, safe and reliable functionality, simple maintenance, durable and portable configuration

DJF-30kVA-150kV --Smart integrated type -1

DJF-30kVA-150kV --Smart integrated type -2

DJF-30kVA-150kV --Smart integrated type -3

Rated Capacity	10KVA—500KVA	Current Accuracy	0.50%
Input Current	45-1350A	Voltage Accuracy	0.50%
Output Voltage	0-250-630V	Operate Method	Automatic
Output Current	0-40-850A	Power Input	AC 220V/380V ±10%

DJF-20kVA-100kV Intelligent Controller & Oil-immersed Transformer Partial Discharge Testing System

Application: For insulation and partial discharge tests of GIS, switchgear, transformers, insulators, and surge arresters.
Key Features: Low background of partial discharge; high sensitivity to detection; strong anti-interference; good interface user digital touch screen.
Automation: Fully autonomous control with multi-level voltage adjustment and real-time display of the step-up curve embedded PC software.
Safety & Reporting Documents: Reports in A4 format and six protective measures of safety data

DJF-20kVA-100kV Industrial &Oiling-immersed &124 Partial Discharge Meter type -1

DJF-20kVA-100kV Industrial &Oiling-immersed &124 Partial Discharge Meter type -2

DJF-20kVA-100kV Industrial &Oiling-immersed &124 Partial Discharge Meter type -3

DJF-20kVA-100kV Industrial &Oiling-immersed &124 Partial Discharge Meter type -4

Rated Capacity	5-1000kVA	Impedance Voltage	10%
Input Voltage	AC 220V/AC 380V	Output Voltage Waveform	Power frequency, sine wave
Output Voltage	AC 0-1000kV	Surface Temperature	Oil immersed:<55℃
			Gas: <50℃
Partial Discharge	Under rated voltage≤5PC	No-load Loss	0.2%-0.35%
Insulation Method	Oil, Gas	Allowed Continuous Operation Time	Once an hour

DJF-124-1kVA-10kV With shielding chamber PD Tester

Application: For the insulation and partial discharge testing of equipment such as GIS, switchgear, transformers, and insulators.
Key Features: Low background of partial discharge, high sensitivity digital touch screen detector with low interference and automation, preset control with multi-step voltage regulation.
User Friendly: Produces A4 test reports with graphical and numerical data in Excel or Word format, features user-friendly software, and offers real-time step-up curve display.
Safety & Reliability: Covers over six different safety protections (over-voltage, flash-over, etc.) and draws upon years of industry knowledge and research for insulation and discharge testing.

DJF-124-1kVA-10kV With shielding chamber type -1

DJF-124-1kVA-10kV With shielding chamber type -2

DJF-124-1kVA-10kV With shielding chamber type -3

DJF-124-1kVA-10kV With shielding chamber type -4

Power input	AC220V ±10%	Power capacity	1kVA
Input current	23A	Output voltage	0-10kV
Voltage measurement accuracy	0.50%	Output current	1A
Current measurement accuracy	0.50%

No-PD Local Partial Discharge test system DJF-124-15kVA-150kV ---Electrical type PD Free

Application: Intended for insulation and partial discharge prрrр thyttests of electrical apparatus including GIS, eԛuipment switchgear, transformers, intsurers, and surge arresters.
High Sensitivity: Has high partial discharge sensitivity with precise measurement accuracy and extensive coverage of sample capacitance, test range limitation, and numerous combinations of frequency bands.
User-Friendly Design: Integrates an LCD 10.1 in Touch Screen replacing the use of knobs and oscilloscope which enhances the efficiency and performance of the systems.
Direct Readings: The device allows direct measurements of discharge pulse readouts which requires calibration to increase accuracy for efficiency

No Local Partial Discharge test system DJF-124-15kVA-150kV ---Electrical& 124 New Style&Oiling stain type -1

No Local Partial Discharge test system DJF-124-15kVA-150kV ---Electrical& 124 New Style&Oiling stain type -2

No Local Partial Discharge test system DJF-124-15kVA-150kV ---Electrical& 124 New Style&Oiling stain type -3

No Local Partial Discharge test system DJF-124-15kVA-150kV ---Electrical& 124 New Style&Oiling stain type - 4

Rated Capacity	10KVA—500KVA	Current Accuracy	0.50%
Input Current	45-1350A	Voltage Accuracy	0.50%
Output Voltage	0-150kV	Operate Method	Automatic
Output Current	0-40-850A	Power Input	AC220V/380V ±10%

ACWD Prower Frequncey Partial Discharge Test System DJF-124-100kVA-100kV

Purpose and Application: The DJF-124-100kVA/100kV Power Frequency Partial Discharge Test System is tailored specifically for the high voltage dielectric strength testing of electrical equipment, components, and insulating materials. It is extensively used in power industries, transformer fabrication, and academia.
Integrated Design: The unit is equipped with a contemporary touch screen interface which improves the operation, functionality, and offers an enhanced reliability of the system.
Advanced Detection: Partial discharge detector with high sensitivity is provided that is compatible with many samples and different bands. It is also equipped with advanced anti-interference and clear data presentation features.
Customizable and Versatile: Sets of adjustable test parameters, various voltage levels, power capacities, and software hardware anti-interference techniques make the system effective and efficient in testing

Prower Frequncey Partial Discharge Test System DJF-124-100kVA-100kV -1

Prower Frequncey Partial Discharge Test System DJF-124-100kVA-100kV -2

Prower Frequncey Partial Discharge Test System DJF-124-100kVA-100kV -3

Prower Frequncey Partial Discharge Test System DJF-124-100kVA-100kV - 4

Rated Capacity	100kVA	Voltage accuracy	1%
Input Voltage	AC 380V	Phase number	Single phase
Output Voltage	AC 0-150kv	Current Accuracy	1%
Partial Discharge	≤5pC	Operate Method	Electrical

4 Channels Partial Discharge Test Kit DJF-126-50kVA-200kVA

High-Accuracy PD Tester: DJF-126-50kVA-200kVA is a digital discharge measurement and analysis tool which evaluates infrared imaging system's insulation health over time.
Refined Functionality: Enhanced desktop display with multifunctional TFT LCD and channels for data visualization, dependable software, and an improved low failure rate for high voltage devices.
Compliance with Standards: Fully integrates international (IEC 60270-2000) and domestic (GB/T 7354-2003, DL/T 417-2006) regulations on partial discharge measurement and fault analysis of power equipment
Compliance with Standards: International (IEC 60270-2000) and national (GB/T 7354-2003, DL/T 417-2006) documents regarding partial discharge measurements and faults diagnostics are fully observed

4 Channels Partial Discharge Test Kit DJF-126-50kVA-200kVA -4

4 Channels Partial Discharge Test Kit DJF-126-50kVA-200kVA -1

4 Channels Partial Discharge Test Kit DJF-126-50kVA-200kVA -2

4 Channels Partial Discharge Test Kit DJF-126-50kVA-200kVA -3

Power Source	AC 220V 50/60Hz	Sensitivity	0.1pC
Sampling Rate	1M, 5M and 10M are optional	Digital filter	10kHz ~ 1MHz optional
Sampling Accuracy	12bit	Test Power Source Frequency	50 ~ 500Hz
Band Range	-40db -20db 0d 20dB 40dB 60dB six gears	Measurement Range Nonlinear Error	10%
Measurement Range	0.1pC~100,000pC	Tested Product Capacitance	6pF~250µF

No Local Discharge PD-free Hipot Test Transformer DDW-30kVA-5kVA

YDW Series Test Transformer: For its class, this device is an innovative test transformer through its precision for non-partial discharge testing and is intended for high-voltage and laboratory grade accessories.
Standard Observance: Conforms to DL417-91, JB/T9641-1999, GB1094.1 ${1094.5} - {85}, {G} {B} {641.1}$ 6451.5-86 and other pertinent standards
Special Design Characteristics: High reliability due to the high trust electronics, low impedance voltage, and minimal partial discharge epoxy insulating cylinder.
System Intelligence and Interference Immunity: It has a high automation level and a greatly improved automation control technology interference immunity

Rated capacity	5-1000kVA	Impedance voltage	5%-10%
Input voltage	AC220V / AC380V	Output voltage waveform	Power frequency, sine wave
Output voltage	AC0-1000kV	Surface temperature rise	<55℃
Partial discharge	≤ 5pC at rated voltage	No-load loss	0.5%-1.5%
Insulation method	Oil	Continuous run time is allowed	1 hour/time

Partial Discharge Test System DJF-10kVA-100kV Electrical &Oiling-immersed Partial Discharge Test System

Application: Intended for the insulation and partial discharge testing of electrical equipment such as GIS, switchgear, transformers, insulators, and surge arresters.
Key Features: Low partial discharge background, strong detection anti-interference, multifunctional scrutinization, automatic control with an industrial embedded PC.
Automation: Software-operated fully automatic voltage step-up/down with real-time curve display for enhanced user interactivity.
Safety & Reporting: Six protective measures and the capability of producing comprehensive A4 test reports in Excel or Word

Partial Discharge Test System DJF-10kVA-100kV Electrical &Oiling-immersed &124T Partial Discharge Meter type -1

Partial Discharge Test System DJF-10kVA-100kV Electrical &Oiling-immersed &124T Partial Discharge Meter type -2

Partial Discharge Test System DJF-10kVA-100kV Electrical &Oiling-immersed &124T Partial Discharge Meter type -3

Partial Discharge Test System DJF-10kVA-100kV Electrical &Oiling-immersed &124T Partial Discharge Meter type - 4

Rated Capacity	5-1000kVA	Impedance Voltage	10%
Input Voltage	AC 220V/AC 380V	Output Voltage Waveform	Power frequency, sine wave
Output Voltage	AC 0-1000kV	Surface Temperature	Oil immersed:<55℃
			Gas: <50℃
Partial Discharge	Under rated voltage≤5PC	No-load Loss	0.2%-0.35%
Insulation Method	Oil, Gas	Allowed Continuous Operation Time	Once an hour

DJF-10kVA-100kV PC testing control System PD free

Usage Scope: For insulation and partial discharge testing of electrical equipment GIS, switchgear, transformers, insulators, and surge arresters.
Latest Advancements: Low background and high canceling sensitivity of interferences, high protective and operational reliability, touch screen digital control of the instrument.
Process Control Division: Full automation with programmable multi-step voltage control, real-time curve display of step-up progress, and user-friendly software.
Test Procedures and Safety: Comprehensive protective safety, exceeds six independent safeguards, comprehensive safety exceeded six independent safeguards, generation of test reports in A4 detail style using Excel or Word

DJF-10kVA-100kV Industrial&Oiling-immersed&124 New Partial Discharge Meter type -1

DJF-10kVA-100kV Industrial&Oiling-immersed&124 New Partial Discharge Meter type -2

DJF-10kVA-100kV Industrial&Oiling-immersed&124 New Partial Discharge Meter type -3

Rated Capacity	5-1000kVA	Impedance Voltage	10%
Input Voltage	AC 220V/AC 380V	Output Voltage Waveform	Power frequency, sine wave
Output Voltage	AC 0-1000kV	Surface Temperature	Oil immersed:<55℃
			Gas: <50℃
Partial Discharge	Under rated voltage≤5PC	No-load Loss	0.2%-0.35%
Insulation Method	Oil, Gas	Allowed Continuous Operation Time	Once an hour

Partial dicharge Free Control Box (new Design)

General Overview and Use Cases: This is a dedicated control box designed for light test transformers which are critical for power maintenance in industries such as power supply, metallurgy, railways, etc.
Highlights of the Product: The previously mentioned systems also incorporate features such as a robust digital signal processing of partial discharge signals with multi-signal channels and a TFT display providing high visibility as well as reliability to the system and its low failure rate.
New Diagnostic Techniques: Systems are equipped with modern electronics for integration of a computer with the system for functions such as signal amplification, data acquisition, signal processing, graphic display, and printing of automatic test reports.
Applicable Regulations: The above mentioned systems comply with the international (IEC 60270-2000) and national (GB/T 7354-2003, DL/T 417-2006) regulations for partial discharge measurement and fault diagnosis without any nonconformities

No Local Discharge Control Box Electrial&124New type -1

No Local Discharge Control Box Electrial&124New type -2

No Local Discharge Control Box Electrial&124New type -3

Power input	AC 220V/380V≤10%	Power capacity	10-500kVA
Input current	45-1350A	Output voltage	0-250-630V
Voltage measurement accruacy	0.50%	Output current	0-40-850A
Currency measurement accruacy	0.50%

Understanding the Partial Discharge Test: Essential Insights

Partial discharge detection enables detection and avoidance of faults and insulation failures in electrical systems, thereby optimizing efficiency while minimizing expensive repairs. In this blog, I will focus on the role PD detection plays in avoiding high-voltage pitfalls, alongside efficient electric asset management.