Status: Current Production
Overview
Megger VLF (Very Low Frequency) test systems apply 0.1 Hz or 0.01 Hz sine wave or cosine-rectangular waveforms to medium and high-voltage cables for withstand testing and insulation diagnostics. VLF testing has largely replaced DC hipot testing for XLPE and EPR cables because it stresses cable insulation in a manner similar to power frequency without the space charge accumulation issues of DC testing. The VLF Sine Wave series provides true sine wave output up to 62 kV. The VLF CR series uses cosine-rectangular waveforms with integrated diagnostic capabilities including tan delta and partial discharge measurement.
Specifications
| Parameter | Value |
|---|---|
| Test Voltage | Up to 62 kV (VLF Sine Wave), up to 60 kV (VLF CR) |
| Frequency | 0.1 Hz and 0.01 Hz |
| Waveform | True sine wave (SW series), cosine-rectangular (CR series) |
| Diagnostics | Tan delta, partial discharge (CR series) |
| Key Features | IEEE 400.2 compliant, cable withstand testing, insulation diagnostics, lightweight portable design |
Models We Repair
Select your model below to request a repair. If your exact model isn’t listed, choose the closest match — the evaluation and repair process is the same across all Megger VLF Test Systems configurations.
| Model | Description | Service |
|---|---|---|
| Megger VLF Sine Wave 54kV | 54 kV true sine wave VLF tester | Request Repair |
| Megger VLF Sine Wave 45kV | 45 kV true sine wave VLF tester | Request Repair |
| Megger VLF Sine Wave 34kV | 34 kV true sine wave VLF tester | Request Repair |
| Megger 62kV VLF Tester | 62 kV VLF cable tester | Request Repair |
| Megger VLF CR-60 | 60 kV cosine-rectangular VLF with diagnostics | Request Repair |
| Megger VLF CR-40 | 40 kV cosine-rectangular VLF with diagnostics | Request Repair |
| Megger VLF CR-28 | 28 kV cosine-rectangular VLF with diagnostics | Request Repair |
| Megger Easytest | Cable test set | Request Repair |
Common Megger VLF Test Systems Failures We Repair
- High-voltage output stage failure from cable flashover events
- Voltage regulation circuit degradation causing waveform distortion
- HV cable and connector insulation breakdown
- Diagnostic measurement circuit calibration drift
- Control processor or display failures
- Cooling system failures from sustained high-output testing
Our technicians perform component-level diagnostics on every Megger VLF Test Systems unit. We don’t just replace boards — we identify and repair the specific failed components, saving you the cost of full module replacements when possible.
Calibration
Every Megger VLF Test Systems repair includes NIST-traceable calibration. We verify all critical measurement and output functions against our reference standards and provide a detailed calibration certificate documenting measured performance against the manufacturer’s published specifications.
Who Uses Megger VLF Test Systems?
The Megger VLF Sine Wave and VLF CR Series Very Low Frequency Cable Test Systems are used by electric utilities, cable testing contractors, high-voltage cable installation, and industrial power cable maintenance.
Our Repair Process
- Ship Your Instrument: Send your Megger VLF Test Systems to our facility from anywhere in the US. We provide prepaid shipping labels on request.
- Free Evaluation: Our technicians perform a complete diagnostic assessment and provide a firm, no-obligation repair quote.
- Expert Repair: Upon approval, we perform component-level repair using OEM-grade parts.
- NIST-Traceable Calibration: Full calibration with documented results across all critical parameters.
- Return Shipment: Your instrument is securely packaged and returned with calibration certificate, repair documentation, and our 90-day warranty.
Request a Repair
Contact us for professional Megger VLF Test Systems repair and calibration. Our team is ready to evaluate your instrument and provide a no-obligation quote.
Email: info@junecompany.com | All repairs include a 90-day parts and labor warranty.
