108kV/108kVA Portable AC Resonant Test System
Product Introduction
The MOEORW-WXB66 108kVA/108kV Variable Frequency AC Resonant Test System is an advanced high-voltage testing solution utilizing frequency conversion for reliable performance.
Product Parameter (specification)
1. Global Operating Specifications
Designed rated power: General medium-voltage adaptive rating
Continuous withstanding voltage: Graded for mid-voltage applications
Resonant frequency range: 30～250Hz, narrow-band stable optimization
High voltage waveform: Power-frequency equivalent sine output
Load adaptation: Full coverage for capacitive test objects
2. Variable Frequency Drive Unit
Power supply: 380V 3-phase industrial AC power
Operation logic: One-click auto frequency scanning
Safety protection: Breakdown cut-off, overcurrent limiting & emergency stop
Human-machine interface: Integrated touch display control
3. Isolated Excitation Device
Structure type: Dry-type isolation step-up design
Input adjustment: 0～380V smooth voltage regulation
Short-time overload: 1.1 times rated load endurance
4. Resonant Reactor Module
Single-unit voltage level: Standard medium-voltage specification
Assembly mode: Flexible series & parallel combined layout
Heat dissipation: Natural air cooling dry-type structure
5. High Voltage Measuring Module
Acquisition range: Adapted for conventional medium & high voltage tests
Comprehensive error: Overall system deviation ＜1.0%
Installation feature: Lightweight split layout for fast setup
Product Application
- Modular Reactor Layout for Flexible Configuration
Equipped with 4 split sections of 27kV dry-type resonant reactors. Users can flexibly layout these reactors in series or parallel, achieving the optimal voltage and current combinations for different test objects.
- Additional System Highlights
The system offers a lightweight modular structure for easy deployment, one-click automatic frequency scanning from 30Hz to 250Hz, and advanced hardware protection with high precision.
Product Application
- Power Cable AC Withstand Voltage Testing
- Substation GIS & Switchgear Commissioning
- Main Transformer Preventive Maintenance
|
Equipment Combination Test subject |
reactor 27 kVA / 27 kV four sections ( The client has their own section) |
Excitation transformer output terminal selection |
Test voltage (kV) |
|
2km of 10kV/300mm² cable |
Four reactors are connected in parallel. |
1.5kV |
≤22kV |
|
0.5 km of 35 kV/300 mm² cable |
Two reactors connected in series and two sets connected in parallel are used. |
3kV |
≤52kV |
|
Switches and transformers with voltage levels of 10kV and below |
Two reactors connected in series |
3 kV |
≤ 42 kV |
|
Switches and transformers with voltage levels of 35kV and below |
Four reactors connected in series |
6kV |
≤95kV |
|
10 kV/ 20000kVA main transformer |
Three reactors connected in series and a compensation capacitor are used. |
3 kV |
≤ 35 kV |
|
35 kV/ 31500kVA main transformer |
Four reactors connected in series and compensation capacitors are used. |
6kV |
≤68kV |
Packing List / System Configuration
- Variable Frequency Power Source : 1 Unit
- Excitation Transformer: 1 Unit
- High Voltage Resonant Reactors: 4 Sections (27kV/27kVA each)
- Capacitive Voltage Divider: 1 Unit
- Accessories & Cables: 1 Set
Standards & Compliance
Compliant with IEC 60060-1 (High-voltage test techniques)
Compliant with IEEE 400.4 (Guide for Field-Testing of Shielded Power Cable Systems)
CE Certified for global markets
1. What is the Q factor for a series resonant circuit?
Answer: The Q factor (Quality Factor) measures the efficiency of a series resonant circuit, representing the ratio of stored energy to dissipated energy. In high-voltage AC resonant test systems, a higher Q factor means the system requires much less input power from the grid to excite and generate the required high test voltage.
2. How does a resonant transformer work?Answer:
A resonant transformer operates by tuning its frequency to match the natural LC frequency of the combined tuning reactors and capacitive test load, producing a clean high-voltage sine wave for insulation testing.
3. What is the comparison between series and parallel resonance?
Answer: Series resonance minimizes impedance and maximizes current/voltage amplification for testing, whereas parallel resonance maximizes impedance and minimizes current, suited for filtering.
4. What is the impedance of a series resonant circuit at resonance?
Answer: At resonance, inductive and capacitive reactances cancel out, reducing total circuit impedance to its absolute minimum, equal solely to the resistive component.
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