Products

This versatile system is designed to measure partial discharges in a wide range of electrical equipment, including transformers, motors, transformers, cables, and gas-insulated switchgear(GIS), switches, lightning arresters, etc. The system's multichannel measurement capability supports testing at multiple points or multiple tests simultaneously. This method can be successfully applied to large transformers and substations.。

Partial dischargeTest equipment is used to detect, measure and analyze partial discharges occurring within an electrical insulation system(PD)Special high voltage diagnostic instrument.

Partial discharge is a partial electrical breakdown that does not completely break down the insulation between conductors. It usually occurs at defects in the solid or liquid insulating layer, such as voids, cracks, contaminants, or air gaps. Over time, these microdischarges degrade the insulation and can lead to catastrophic failure of high-voltage equipment.

WhyPDTesting is important

Identify and repair insulation defects before they occur
Facilitates the development of condition-based maintenance plans
Reduce costly unplanned downtime
Improve long-term asset reliability

Main components
Non-partial discharge transformer
Partial discharge measuring instrument
Quarantine low-pass filter

Coupling capacitor
Current-limiting resistor

Control Panel

Frequency:50、100、150、200、400Hertz

3dB fL：10、20、40kHzOptional

3dB fH：80、200、300kHzOptional
Coarse adjustment range6File20±1dB? Fine tuning range>20dB

Types of Partial Discharge Test Equipment

PDDetectors and analyzers
Partial discharge(PD)The key components of the detection system arePDA detector capable of measure a discharge event, an amount of charge (pC), frequency, and waveform data. TypicalPDThe detection instrument supports high sensitivity (as low as0.1pC), multi-channel, and graphical reporting capabilities.

Partial discharge test system

The complete partial discharge test system includes a high voltage test source, a coupling capacitor, a partial discharge analyzer, a calibrator, and software for data acquisition and analysis. The system can be used for both offline acceptance testing and advanced offline diagnostics.

OnlinePDMonitoring equipment

On-line partial discharge monitoring solutions continuously monitor insulation conditions without powering down equipment, making them ideal for critical assets where service interruptions are unacceptable.

Buyers are choosingPDKey features of primary concern when testing equipment

High sensitivity and accuracy

High sensitivity (e.g.0.1pCOr less) can detect insulation problems early, which is essential for quality assurance and preventive maintenance.

Comply with international standards

According toIEC 60270And other global standards ensure that measurement results are comparable, repeatable, and available through utilities/Factory Acceptance Test.

Multimodal detection

Supports multiple detection techniques,HFCT、TEV、UHFAnd the detection precision of various test objects is improved.

Reporting and data analysis

Clear graphic output, phase-resolvedPDAnalysis and exportable test reports,CSV / PDFImproved availability in the field.

PDTypical applications of test equipment

Transformer (high voltage)/MV) Partial Discharge Testing and Insulation Assessment

Partial Discharge Detection of Power Cable

Gas-insulated switchgear (GIS) Insulation verification

Rotating machinery (motors and generators)

Industrial Assets and Manufacturing Quality Control

How to choose the right onePDTest system

Define test range and voltage requirements

Decide that you need portablePDDetectors, bench-top systems, or integration for the laboratoryPDTest system.

Check sensitivity and measuring range

High sensitivity is essential for early detection and accurate insulation diagnosis.

Review compliance and certification

Ensure complianceIEC 60270And relevant industry standards.

FAQs  Frequently asked questions

Question1：PDTest andPDWhat's the difference in monitoring?

Answer:PDTesting is typically done offline, during acceptance or planned maintenance;PDMonitoring is an ongoing online assessment.
Q2: Which industries are commonly usedPDTest equipment?
A: Utilities, power generation, industrial manufacturing, aerospace, rail, and petrochemical industries rely onPDData.
Q3: InterpretationPDWhat conditions are required for the test results?
A: The interpretation process involves analyzing the discharge amplitude, phase position, and frequency, and comparing the results with theBaseline measurements are compared.