Product Introduction
The MOEORW-WPO35 Cable PD Test System is an internationally recognized, non-destructive diagnostic solution specifically designed for 35kV medium voltage power cables. Utilizing advanced Damped AC (DAC) and Oscillating Wave Partial Discharge (OWTS) technology, this compact system effectively measures and pinpoints partial discharge locations from 10kV to 35kV cables without causing any harm to the insulation. It serves as a vital maintenance tool for cable commissioning, preventive assessment, and asset management.
⚡ 60kV Output & SUV Portable
Tests 35kV cables up to 5km, fits standard SUVs with zero-damage DAC tech.
Technical Guide: The Costly Mistake of Relying Solely on 0.1Hz VLF for 35kV Cable Handover Tests
Product Parameter (specification)
|
Technical indicators |
MOEORW- WOHT35 |
|
Low-damping oscillating power supply |
Peak voltage ≥ 60 kV, RMS voltage ≥ 42.4 kV, Oscillation current ≥ 100 A |
|
Charging time |
Less than 8 s |
|
Types of electronic switches |
IGBT |
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Charging current |
10mA |
|
Test voltage frequency |
20Hz～800Hz |
|
Cable capacitor |
0.05μF-4μF |
|
Partial discharge level test range |
1pC-200nC |
|
Partial discharge location bandwidth |
Automatic bandwidth selection from 150kHz to 50MHz |
|
Local positioning accuracy |
1% of cable length |
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Longest test length |
5km |
|
tanδ test of dielectric loss angle |
0.1%～10% |
|
Total weight of the instrument |
85 kg |
|
Calibrator |
Gear settings: 1pC-200nC Rise time: no more than 30ns Pulse amplitude accuracy: 2%/5% Pulse frequency: 100Hz/200Hz Calibration capacitor: 100pF/1nF Power supply: 4 x 1.5V batteries Instrument weight: 600g |
🎯 1% Precision PD Pinpointing
Auto-filters 150kHz-50MHz bandwidth for non-destructive defect tracking and exact fault location.
Field Insights: Mastering 1% Precision: How to Eliminate Field Noise in 35kV Cable PD Mapping
Key Technical Advantages of MOEORW-WPO35
High Voltage Output: Delivers up to 60kV peak voltage (42.4kV RMS) suitable for comprehensive 35kV system testing.
Precise PD Location: Features an automatic bandwidth selection (150kHz-50MHz) achieving a location accuracy of 1% of cable length.
Dual Diagnostic Capability: Integration of Partial Discharge (1pC-200nC) and Dissipation Factor (tanδ: 0.1%–10%) measurement for overall insulation aging assessment.
Long Distance Testing: Capable of testing medium voltage cables up to 5km in length with ultra-low power consumption.
Highly Portable Design: Total instrument weight is only 85kg, making it easily transportable in standard passenger vehicles for field testing.
Advanced IGBT Switching: Utilizes cutting-edge IGBT electronic switches to guarantee stable LC oscillation and high-precision pulse generation.
Application Scenarios
Target Applications for 35kV OWTS System
Cable Commissioning Test: Identify defects caused by improper installation or shipping before cable energization.
Preventive Maintenance Test: Verify the insulation quality of cable joints and terminations after repair.
Cable Insulation Aging Diagnosis : Estimate asset lifespan of old operational cables based on joint tan delta and PD analysis.
Typical Fields: Ideal for Wind Farm 35kV collection lines, power grid substations, railway transit, and mining cable maintenance.
MOEORW-WPO35 Manufacturer Advantages
1. Robust Supply Chain with In-House Core Components
- Proprietary Core Hardware: Key high-voltage reactors and solid-state IGBT switches are independently engineered and manufactured in-house.
- Zero Supply Chain Risk: Complete decoupling from third-party component delays ensures a secure product ecosystem.
- Rapid Lead Times: In-house production dramatically shortens component sourcing cycles, moving projects from order to dispatch faster.
2. End-to-End Quality Control System
- ISO 9001 Certified: Our factory operates under strict ISO 9001 quality management protocols to guarantee industrial-grade reliability.
- Multi-Stage Inspection: Stringent QC checkpoints span from initial raw material incoming inspections (IQC) to full system assembly.
- 100% Device Stress Testing: Every critical component undergoes mandatory, prolonged aging and high-voltage stress tests to eliminate infant mortality failures.
3. Scalable Production & Reliable Bulk Delivery
- High Monthly Capacity: A streamlined, highly efficient production line ensures stable and scalable monthly output.
- 2–3 Week Turnaround: Standard batch and fleet orders are fully completed and ready for international shipping within 14 to 21 days.
- Custom OEM/ODM Configurations: Tailored voltage ratings, specialized sensor brackets, and software integration options are available to meet local grid standards.
4. Advanced Technical Expertise & Intellectual Property
- R&D Collaboration: Active, multi-year joint research initiatives with top-tier power engineering universities and national grid research institutes.
- Patented Innovations: Powered by proprietary digital signal processing algorithms, holding multiple core utility patents.
- Certified Software Integrity: Custom UI, data analysis engines, and calibration tools are fully protected by verified software copyrights.
Q1: What are the main applications of the MOEORW-WPO35 Cable PD Test System?
A: The MOEORW-WPO35 is a professional diagnostic tool designed for medium voltage cables (primarily 35kV systems). It is widely used for:Cable Commissioning Tests: Detecting installation or shipping defects before energizing.Preventive Maintenance: Verifying the insulation quality of cable joints and terminations after repair.Asset Management: Measuring partial discharge and dissipation factor (tanδ) to assess cable insulation aging and avoid catastrophic power failures.
Q2: Why choose Damped AC (OWTS) technology over traditional AC Hipot tests?
A: Traditional AC Hipot tests only provide a simple "pass or fail" result and can cause secondary destructive damage to the cable. In contrast, our Damped AC (DAC/OWTS) technology uses the circuit theory's basic LC oscillation principle. It triggers up to 50 localized pulses to stimulate and pinpoint hidden defects without harming the cable insulation. Furthermore, it provides rich diagnostic data, including PD pattern graphs and dielectric loss, which Hipot tests cannot deliver.
Q3: What is the maximum cable length that the MOEORW-WPO35 can test?
A: The system can test medium voltage cables up to 5 kilometers (3.1 miles) in length. It features ultra-low power consumption during field measurements while maintaining high testing precision, making it ideal for long-distance wind farm collection lines or city grid substations.
Q4: How accurate is the partial discharge localization of this system?
A: The MOEORW-WPO35 achieves a location accuracy of within 1% of the total cable length. It is equipped with an automatic bandwidth selection feature ranging from 150kHz to 50MHz, ensuring precise noise filtering and exact fault pinpointing even in complex field environments.
Q5: Is the system portable enough for remote field testing?
A: Yes, absolutely. While traditional VLF or AC test sets are bulky and heavy, the MOEORW-WPO35 is highly integrated with a total weight of only 85kg. It has a compact footprint and can be easily loaded into a standard passenger vehicle or SUV to be transported to any remote job site, such as mountainous wind farms or mining areas.
Q6: Are the core components developed in-house? What is your lead time for batch orders?
A: Yes. Key high-voltage components, including the high-voltage reactors and solid-state IGBT electronic switches, are independently engineered and manufactured in-house. This decoupling from third-party supply chains allows us to guarantee a reliable supply and offer a fast turnaround of 2–3 weeks for standard batch and fleet orders.
Q7: What parameters are included in the calibration unit?
A: The system includes a high-precision calibrator covering a wide range from 1pC to 200nC. It features an ultra-fast pulse rise time of ≤ 30ns and an amplitude accuracy of 2%/5%, allowing field engineers to calibrate the software accurately before starting the actual high-voltage oscillation.
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