VLF Sine Wave 45- Test and diagnosis system

Description

VLF Sine Wave 45  with optional integrated tanδ which  is a compact system for commissioning, testing and condition analysis of medium-voltage cables. This unit performs very low frequency (VLF), DC, and sheath integrity testing as well as sheath fault pinpointing when combined with the optional ESG NT step voltage probe. For 0.1 Hz sine wave, rectangular or DC voltage tests, the VLF45 provides enhanced voltage quality and stability. An optional internal tanδ is available that automatically evaluates results for PE, XLPE and PILC type cables based on insulation and selected compliance standard. Combined with the optional ESG NT step voltage probe, the VLF45 can pinpoint sheath faults.

Overview of VLF Sine Wave 45 kV

• Test capacity of up to 10μF – that’s up to 40 km or 25.8 miles of cable at reduced frequency and voltage
• Internal tanδ option with automatic results interpretation
• One minute burn after fault detection
• Automatic frequency adjustment based on cable length
• Adjustable DC pulse rates of 1:3 and 1:4
• IEEE compliant withstand testing for new installations up to 25 kV
• IEEE 400.2 compliant maintenance testing up to 35 kV
• IEC 60229 compliant sheath testing up to 20 kV DC