HVA28TD

The smallest VLF test system of its kind with integrated Tan Delta Diagnostics. The HVA28TD is a truly compact and portable VLF test set system for testing medium voltage cables. It performs VLF and DC testing, sheath testing with sheath fault location mode and TD leakage current correction (guard terminal) is included. Assessments of cable condition can also be carried out by use of Tan Delta Diagnostics.

The HVA28TD is a truly compact and portable VLF test set system for testing medium voltage cables. It performs VLF and DC testing, sheath testing with sheath fault location mode and TD leakage current correction (guard terminal) is included. Assessments of cable condition can also be carried out by use of Tan Delta Diagnostics.
New – the recently introduced Monitored Withstand Test (MWT), a combination of Withstand Testing and Tan Delta Diagnostics in compliance with IEEE 400.2-2013, can
be performed.

Performance – the HVA28TD for hire offers outstanding features in terms of size, weight (14
kg) and performance (max. 10 µF).

Safety – the instrument has two independent earthing devices (electronic and
mechanical discharging) and an integrated 12 kV feedback protection system to protect
both operator and instrument.

Field use – a watertight and very rugged case with a protection class of IP67 makes
additional transport boxes obsolete.

Connectivity – on site, no external PC is needed. All results can be downloaded later by
USB or Bluetooth for further investigation and easy report creation on the PC Software.

• Output voltage 28 kVpeak , 20 kVrms
• Pure sinusoidal output voltage (load-independent)
• Internal TD measurement with high accuracy (1 x 10-4)
• Tan Delta measurement with various frequencies (0,01 – 0,1 Hz)
• Leakage Guard® – leakage current correction
• Output current 20 mA max.
• Highest test capacity of 10 µF
• Ultra light and compact weight (14 kg)
• Protection class IP67 (with closed lid)
• Total protection – almost unbreakable, watertight, dustproof and corrosion proof case
• Large Colour display (4,3”)
• USB and Bluetooth connections
• Cable testing according: IEC60502-2:2015, IEEE 400.2-2004, CENELEC HD 620/621, IEEE400.2-2013 etc.
• Programmable test sequences
• Upgradable with partial discharge diagnostic system (optional)
• Integrated 12 kV transient protection (50 Hz)

The HVA28TD VLF Test Set by B2 Electronics is designed for precision testing in a variety of settings, ensuring the health and reliability of medium-voltage cables. Its applications include:

• Cable testing in power utilities — Essential for routine testing and maintenance of underground cables, the HVA28TD for hire helps in detecting insulation weaknesses before they lead to failures, ensuring continuous power supply. It’s used for testing medium and high-voltage cables in residential areas, industrial plants and distribution networks.
• Installation testing for new cable systems — After laying new cable lines, the HVA28TD is used to perform acceptance testing to verify the integrity of cable insulation. This ensures that newly installed cables meet the required specifications and are safe for operational use.
• Preventive maintenance — In terms of preventive maintenance, the HVA28TD uses Tangent Delta diagnostics to identify potential issues in ageing cable systems, such as moisture ingress or insulation degradation. This allows for timely repairs, reducing downtime and extending the lifespan of the cable network.
• Substation equipment testing — Beyond cables, the HVA28TD can test substation equipment like transformers, switchgear and bushings. This ensures that all components of the power distribution network are in optimal working condition, enhancing system reliability.
• Renewable energy sector — As renewable energy sources like wind and solar farms are connected to the grid, the HVA28TD tests the cables and equipment used in these installations. This ensures that the integration of renewable energy sources does not compromise the grid’s integrity.