Your Professional Transformer Capacitance and Tan Delta Tester Supplier
Founded in 1992 and formally incorporated as Wuhan Moen Intelligent Electrical Co., Ltd. on November 12, 2012, with a registered capital of RMB 36 million, we are a professional technology company specializing in the research, development, and production of high-voltage test equipment. Our 8,000 m² facility in Wuhan East Lake High-Tech Development Zone houses dedicated production lines, R&D centers, and administrative facilities. With an experienced technical and production team, Moen focuses on core products including test transformers, series resonance systems, and other high-voltage testing equipment. Backed by years of industry experience, the company is committed to reliable manufacturing, continuous technical improvement, and providing practical solutions for global power utility and industrial customers.
-
![Frequency Domain Dielectric Response Analyzer]()
Frequency Domain Dielectric Response AnalyzerThe MOEORW-WJT100 is an insulation diagnostic analyzer designed for power maintenance/operation/testing personnel.It features dual FDS+PDC testing, wide-range high precision, and rapid insulation -
![On-Line Capacitive Equipment Insulation Tester]()
On-Line Capacitive Equipment Insulation TesterThe MOEORW-W4708C is an online insulation tester for capacitive equipment designed for power operation and maintenance/substation repair users.Its main function is uninterruptible online measurement -
![Automatic Anti-interference Tan Delta Tester]()
Automatic Anti-interference Tan Delta TesterThe MOEORW-W801E is a fully automatic anti-interference dielectric loss tester designed for power testing/maintenance personnel.Its main features include frequency conversion anti-interference, fully -
![Transformer Dissipation Factor Tan Delta Tester]()
Transformer Dissipation Factor Tan Delta TesterThe MOEORW-W4700C+ is a high-precision dielectric loss tester designed for power maintenance/testing personnel.It features variable frequency anti-interference, fully automatic measurement, and -
![HV Dielectric Loss Tester For Cable]()
HV Dielectric Loss Tester For CableThe MOEORW-W902B is a high-voltage cable dielectric loss tester designed for power testing, maintenance, and inspection units.It features high-precision synchronous measurement of dielectric loss and -
![Transformer Characteristic Capacity Tester]()
Transformer Characteristic Capacity TesterThe MOEORW-WR4303 Transformer Characteristic Capacity Tester is a comprehensive three-phase transformer testing instrument designed for users in power maintenance, power supply inspection, -
![Transformer Tan Delta Tester]()
Transformer Tan Delta TesterMOEORW-W801C1 Fully Automatic Anti-Interference Dielectric Loss Tester employs frequency conversion technology to effectively filter out 50Hz interference. It incorporates a high-voltage power supply -
![High Voltage Cable Dielectric Loss Tester]()
High Voltage Cable Dielectric Loss TesterEmpowering High-Voltage Testing with Technology! The MOEORW-W901 High Voltage Cable Fault Locator features an industrial-grade touchscreen and digital data acquisition technology. With dual wireless -
![Transformer Capacity Loss Parameter Tester]()
Transformer Capacity Loss Parameter TesterTo provide high-precision readings, the MEBRT-WII Transformer Capacity and Loss Parameter Tester makes use of digital synthesized sine wave technology. In order to satisfy the effective testing -
![Transformer Capacity and Characteristics Tester]()
Transformer Capacity and Characteristics TesterWith compatibility for various transformer types, the MEBRT-WII tester accurately assesses energy efficiency in line with GB20052-2020. It supports various wiring configurations and range expansion -
![Active Transformer Capacity and Characteristic Tester]()
Active Transformer Capacity and Characteristic TesterEquipped with an intelligent detection core, the MEBRT-W Active Transformer Capacity and Characteristic Tester automatically identifies wiring configurations and switches ranges, employing multiple -
![Capacitance & Tan Delta Tester]()
Capacitance & Tan Delta TesterMOEORW-W4700A Dielectric Loss Tester is a high-precision electrical testing device capable of measuring dielectric loss and capacitance in high-voltage equipment. Featuring strong anti-interference
Why choose us
Our Certificate
We are certified in ISO 9001 (Quality), ISO 45001 (Health & Safety), and ISO 14001 (Environment), ensuring high standards in all aspects of our operations.
Strong R&D Capability
Committed to technological breakthroughs, including investments to develop 750kV reactor solutions.
Experienced Technical Team
A growing team of 61 employees supporting product development, production, and customer service.
Complete Pre & After-Sales Service
From solution design and technical support to installation, maintenance, and fast response service.
Frequency Domain Dielectric Response Analyzer (DFR) combines frequency domain and time domain testing methods, enabling users to conduct broadband measurements on equipment in a relatively short time, greatly reducing the workload of on-site testers and improving on-site work efficiency. The maximum DC output voltage of this product can reach 2kV, and the maximum AC output voltage can reach 500V (peak value). At the same time, it supports the PDC method and the FDS method, which can effectively detect the status of high-voltage insulation systems (such as power transformers, bushings, cables, and generators), and can automatically analyze them to determine the moisture content in the insulation materials. It uses a non-destructive method to evaluate the moisture condition of equipment, as an important basis for equipment replacement and other drying measures.
|
Parameters |
Specifications |
|
Power supply |
200V - 230V AC power supply |
|
Output voltage |
0-200V continuously adjustable (standard configuration) 0-2kV continuously adjustable (optional) 0-10kV continuously adjustable (optional) |
|
Frequency range |
0.1mHz - 10kHz |
|
Current measurement range |
1pA~±100mA |
|
Capacitance range |
100pF - 1μF |
|
Capacitance measurement accuracy |
±0.5% of the reading + 1pF |
|
Dielectric loss range |
0 - 100 (0 - 10000%) |
|
Dielectric loss measurement accuracy |
< 0.5% + 0.0002, 45-70Hz, C > 300 pF < 1% + 0.0003, 1mHz-100Hz, C > 1000pF < 2% + 0.0005, 100Hz-1kHz, C > 1000 pF |
|
Operating temperature |
-10℃ to +65℃ |
|
Volume |
320mm × 340mm × 110mm |
|
Weight |
6.2kg |
Advantages of Frequency Domain Dielectric Response Analyzer
Non-Destructive Testing (NDT)
Measures insulation condition without disassembly, oil sampling, or service interruption.
High Moisture Sensitivity
Detects very small amounts of moisture in insulation, helping prevent serious equipment failures.
Complete Dielectric Analysis
Measures the full dielectric response across a wide frequency range, providing a detailed view of insulation health.
Early Fault Detection
Identifies insulation aging and degradation long before conventional tests can detect problems.
Online Monitoring Capability
Supports continuous condition monitoring and predictive maintenance, reducing unplanned outages.
Quantitative Results
Provides direct measurements of capacitance, dissipation factor, moisture content, conductivity, and insulation resistance.
Deeper Diagnostic Insight
Frequency-domain analysis reveals insulation conditions that cannot be observed with traditional time-domain methods.
Dual-Domain Verification (FDS + PDC)
Combining frequency-domain and time-domain measurements improves result accuracy and reliability.
Type of Frequency Domain Dielectric Response Analyzer
Laboratory-Grade FDS Analyzer
High-accuracy instruments for research and development. They offer a wide frequency range and detailed measurements for insulation material testing and aging studies.
Portable / Field-Deployable Analyzer
Compact and rugged devices designed for on-site testing of transformers, cables, bushings, and generators. They provide fast diagnostic results for maintenance decisions.
Integrated Online Transformer Monitor
Permanently installed systems that continuously monitor transformer insulation condition, enabling real-time assessment and predictive maintenance.
Multi-Frequency Impedance Analyzer (Broadband)
Broadband instruments with extended frequency ranges for both insulation diagnostics and advanced material characterization, such as polymer and resin analysis.
Power Transformer Insulation
Measures moisture in oil-paper insulation and oil conductivity during factory testing, commissioning, maintenance, or after faults. Provides fast, non-invasive results without oil sampling.
Bushing Condition Assessment
Evaluates moisture in capacitor bushings, helping prevent partial discharge and failures without removing equipment from service.
Power Cable Testing
Checks insulation quality of underground or submarine cables, detecting moisture, aging, and manufacturing defects.
Generator & Motor Stator Insulation
Assesses moisture, curing, and aging in stator windings, supporting life-extension decisions for large machines.
Manufacturing Quality Control
Used in production lines to verify dielectric properties and monitor resin or composite curing in real time.
Renewable Energy Assets
Monitors insulation in wind turbine generators and solar inverter capacitors under harsh conditions to support fleet-wide asset management.
Research & Material Development
Enables detailed studies of polymer aging, insulation materials, oil degradation, and accelerated aging protocols.
Components of Frequency Domain Dielectric Response Analyzer
Signal Generator
Produces precise AC excitation signals over a wide frequency range.
High-Voltage Amplifier
Amplifies test voltages for high-capacitance or power equipment testing.
Current Measurement Unit
Measures extremely small currents with high accuracy.
Phase Detection Module
Determines phase shift between voltage and current.
Data Acquisition System
Collects and digitizes measurement signals.
Analysis Software
Processes measured data and generates dielectric response spectra.
Working Principle of Frequency Domain Dielectric Response Analyzer
x(t)=a0+∑n=1∞(ancos2nπtT+bnsin2nπtT)
An and bn are Fourier coefficients.
The Fourier transform allows studying signals in the frequency domain rather than in the time domain. It breaks down the signal into several sinusoidal signals and plots the amplitude of each signal versus frequency.
The expression of the signal of Figure 2 for N=1is:x(t)=cos(ωt)+19cos(3ωt)=x1(t)+x2(t)
With ω/rad.s−1=pulsation of the signal =2πT
T/s=period of the signal x(t)
It is the sum of x1(t) and x2(t) where:
x1(t)=cos(ωt)à Amplitude of the signal x1(t)=1 and frequency of the signal x1(t)=ω2π=1T
x2(t)=19cos(3ωt) à Amplitude of the signal x2(t)=19 and frequency of the signal x2(t)=3ω2π=3T
Certificates
FAQ
As one of the most professional transformer capacitance and tan delta tester manufacturers in China, we're featured by quality products and good price. Please rest assured to buy high quality transformer capacitance and tan delta tester in stock here and get quotation from our factory. Customized orders are welcome.
Transformer Capacity And Characteristics Tester, Capacitance Tan Delta Tester, Active Transformer Capacity And Characteristic Tester
