Megger VLF Sine 37 kV High-power test and diagnostic system
- Maximum output voltage: 37 kV peak
- Test capacity: 1.6 μF at 26 kV
- Display: 7″ color touchscreen interface
- Weight: Only 29 kilograms
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Description
Leading Technology for Medium-Voltage Cable Diagnostics
The Megger VLF Sine 37 kV Test and Diagnostics System sets a new benchmark for the testing and evaluation of medium-voltage (MV) cable networks worldwide. Tailored to serve power utilities, grid operators, and cable service companies, this advanced system merges power, portability, and precision into a single, compact housing. Its integrated tan delta feature allows for deep insights into cable insulation integrity—enabling proactive maintenance and fault prevention. Whether for annual asset inspection, commissioning of new cable installations, or troubleshooting unexpected faults, the VLF Sine 37 kV stands out as the lightest, smallest, and most powerful test unit in its class, capable of serving networks with cable lengths exceeding 5 km. Leading the field in both convenience and results, it’s fast becoming the preferred choice for efficient and reliable cable diagnostics.
Compact Powerhouse: Innovative Design and Portability
Being both robust and easily portable, the VLF Sine 37 kV offers unparalleled performance wherever needed. Despite its formidable testing capacity of 1.6 μF at 26 kVRMS, the unit weighs just 29 kg (64 lbs.) and measures only 529 x 478 x 380 mm (20.8 x 18.8 x 15.0 inches), making field deployment quick and straightforward. The device’s design incorporates a sturdy enclosure and a large, vivid 7-inch color touchscreen for optimal usability in varied field conditions. A dedicated transport case is available to enhance safety and convenience during transportation, especially when combined with accessories like the optional PDS 62-SIN Partial Discharge System. These thoughtful design elements make the VLF Sine 37 kV the obvious solution for crews requiring genuine portability without sacrificing power or reliability.
Multifunctionality Meets Advanced Test Capabilities
The versatility of the Megger VLF Sine 37 kV is a defining attribute. This instrument conducts a full suite of tests essential for modern MV cable evaluation: VLF (Very Low Frequency) sine and rectangular wave AC testing, precision DC voltage testing, insulation resistance measurement up to 5 GOhm, and comprehensive sheath testing per IEC 60229 standards. For pinpoint cable sheath faults, the device works seamlessly with the ESG NT2 step voltage probe. For cable condition assessment, built-in tan delta measurement enables automated or user-defined trending in accordance with IEEE400.2 recommendations. Moreover, it’s readily expandable: by pairing it with the PDS 62-SIN coupler, technicians can add partial discharge (PD) testing, identifying localized insulation defects and workmanship issues. This breadth of functionality ensures total coverage for MV asset diagnostics—helping to secure grid reliability and minimize downtime.
Smart Control: Intuitive Interface Streamlines Operation
Central to the appeal of the VLF Sine 37 kV is its exceptional user interface. The intuitive software is purpose-built for swift setup and smooth operation, featuring a 7-inch touch display that makes even complex test sequences and advanced diagnostics easily accessible. The inclusion of an emergency stop button further enhances safety during operation—a critical factor when performing high-voltage tests in unpredictable environments. Automated test result interpretation, as per the latest IEEE standards, reduces the training burden and minimizes human error. As a result, both routine cable tests and sophisticated diagnostics, such as historical comparisons and regression analyses, become feasible even for field teams with limited experience. This streamlined workflow means productivity—and safety—are maximized every time the unit is deployed.
Application Focus: Where the VLF Sine 37 Excels
Engineered to address the demands of contemporary cable infrastructure, the VLF Sine 37 kV offers targeted applications for utility professionals, manufacturers, and service providers. In commissioning, the unit ensures new installations meet strict standards for insulation quality and integrity. For periodic maintenance, it facilitates tan delta trending and withstand testing, identifying aging and moisture ingress before catastrophic failures can occur. When partial discharge is of concern, the system’s PD testing capabilities (when equipped with the PDS 62-SIN) provide granular localization of insulation weaknesses—critical in high-reliability environments such as hospitals, data centers, and transportation authorities. The sheath test and fault pinpointing mode, compliant with IEC 60229, supports rapid isolation of sheath defects that could otherwise trigger outages or hazardous situations. In short, the VLF Sine 37 kV is a holistic asset for preventive diagnostics, troubleshooting, and compliance in MV cable management.
Integrated Data Management for Modern Workflows
All test and diagnostic results produced by the VLF Sine 37 kV are automatically stored internally, supporting robust data management and traceability without the need for an external computer. With ample memory for at least 1000 measurements, technicians can review results on the large touchscreen immediately after testing or at a later date, enabling informed decision-making. Data can be easily exported via USB for integration with asset management systems, regulatory documentation, or further analysis. An upcoming wireless data-transfer feature will enable even more seamless connection to mobile devices—future-proofing the system for digital field operations. By combining advanced measurement with smart data handling and compliance-ready reporting, the VLF Sine 37 kV empowers grid operators to build a predictive, data-driven strategy for cable asset care.
Flexible Accessories and Enhanced System Extensibility
To guarantee adaptability for diverse cable environments and field situations, the VLF Sine 37 kV comes with a range of selectable and optional accessories. Pluggable HV test leads, offered in multiple standard lengths (5, 10, or 15 meters), dramatically increase deployment flexibility. For transport and storage, purpose-built cases ensure both the VLF unit and optional PDS 62-SIN PD attachment travel safely across rough terrain and harsh sites. Additional accessories include high-voltage adapters, leakage current correction modules, and external safety control units. The PDS 62-SIN, as the market’s lightest PD coupler, enables not just cable withstand and tan delta tests, but also comprehensive partial discharge diagnosis with globally trusted software. This modular approach guarantees that the VLF Sine 37 kV can evolve in capability as user needs and technical standards progress.
Worldwide Access Through tpt24: Guaranteed Authenticity
Purchasing genuine, high-quality testing equipment is critical to asset integrity and operational safety. For the Megger VLF Sine 37 kV, tpt24 is recognized as the world’s premier online store—offering this product with guaranteed authenticity and manufacturing quality. Customers in any country can rely on tpt24 for fast, secure, and tracked delivery, as well as aftersales support and documentation. This global reach ensures that MV cable professionals—regardless of location—receive cutting-edge technology with full assurance of genuine origin and compliance. When selecting advanced diagnostic solutions for your operations, tpt24 delivers total confidence alongside world-leading products like the VLF Sine 37 kV.
Specifications
| Parameter | Specification |
|---|---|
| Output voltage (VLF sine wave) | 0 … 26 kV RMS / 0 … 37 kV peak |
| Output voltage (DC) | ±0 … 37 kV |
| Output voltage (VLF rectangular) | 0 … 37 kV |
| Output current | 37 mA @ 37 kV peak |
| Output current accuracy | ±1 % |
| Output current resolution | 1 μA |
| Test frequency range | 0.01 … 0.1 Hz |
| Test capacity | 1.6 μF @ 26 kV RMS, max 10 μF |
| Resistance range | 0.1 MΩ … 5 GΩ |
| Internal tan delta option | Yes, 0.01–0.1 Hz, auto IEEE 400.2 eval |
| Sheath testing voltage range | 0 … -20 kV DC |
| Sheath fault pinpointing | 0 … -20 kV DC, multiple pulse rates |
| Input power | 100–264 V, 50/60 Hz, 1500 VA |
| Duty cycle | Continuous |
| Display | 7″ color touchscreen |
| Internal memory | ≥ 1000 measurements |
| Data interfaces | USB, LAN, wireless (coming soon) |
| Dimensions (W x H x D) | 529 x 478 x 380 mm (20.8 x 18.8 x 15 in) |
| Weight | 29 kg (64 lbs) |
| Protection class | IP21 |
| Operating temperature | -20°C to +55°C (-4°F to 131°F) |
| Storage temperature | -20°C to +70°C (-4°F to 158°F) |













