Electrical testing instruments, built to be used in the field

VA-TEK builds high-voltage test sets, protection test systems and transformer diagnostic instruments for utilities, cable contractors, service companies and testing laboratories. Every model below is manufactured by Shenzhen Feso Automation Technology Co., Ltd. and shipped worldwide.

15 models 3 product families Manufactured in Shenzhen, China
Protection & Measurement

Secondary Test Instruments

Relay test systems and instrument-transformer analyzers for protection commissioning, routine maintenance and post-fault investigation in transmission and distribution substations.

The range runs from a portable three-phase unit through to a six-phase system with an embedded PC for stand-alone testing of differential, distance and busbar schemes — plus an all-in-one CT/PT analyzer covering protection, measuring and TP-class current transformers and inductive voltage transformers to IEC 61869-2/-3 and IEEE/ANSI C57.13.

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VACTP200P

The VACTP200P CT/PT analyzer tests protection CTs, measuring CTs, TP-class CTs and inductive PTs per IEC 61869-2/-3 and…

  • CT ratio 1–30000 · ±0.05%
  • PT ratio 1–10000 · ±0.05%
  • Knee-point voltage up to 40

VAE-430

The VAE-430 is a three-phase protection relay test system providing 3×0–40 A AC current, 4×0–120 V AC voltage…

  • Current output 3×0–40 A AC
  • Single-phase current 1×0–120 A
  • Voltage output 4×0–120 V AC / 1×0–240 V

VAE-660

The VAE-660 is a six-phase protection relay test system providing 6×0–30 A AC current, 6×0–120 V AC voltage…

  • Current output 6×0–30 A AC
  • Single-phase current 1×0–180 A
  • Voltage output 6×0–120 V AC / 3×0–240 V
Cable & Insulation Testing

VLF Hipot Testers

Very low frequency AC hipot test sets for after-laying, acceptance and maintenance testing of shielded power cables, generator stators and motor windings.

Eight models from 30 kV to 90 kV peak output, in split two-piece and self-contained single-unit formats. The TD variants add tan-delta (dielectric loss) diagnostics and DC and sheath testing, so one instrument covers both the withstand test and the condition assessment that follows it.

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VLF-30

The VLF-30 is a 30 kV peak sinusoidal VLF hipot test set in a split design: a 4…

  • Maximum output voltage 0 – 30
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01

VLF-34TD

The VLF-34TD is a self-contained 34 kV class instrument for installation, acceptance and maintenance testing of 5 kV…

  • VLF sine wave output 0 – 34 / 0 – 24
  • DC output ± 0 – 34
  • Output current 0 – 14

VLF-40

The VLF-40 is a 40 kV peak sinusoidal VLF hipot test set engineered to verify the dielectric strength…

  • Maximum output voltage 0 – 40
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01

VLF-45TD

The VLF-45TD is a multifunctional VLF hipot test system for installation, acceptance and maintenance testing of 5 kV…

  • VLF sine wave output 0 – 45 / 0 – 31.8
  • DC output ± 0 – 45
  • Output current 0 – 14

VLF-50

The VLF-50 is a 50 kV peak sinusoidal VLF hipot test set designed for AC withstand testing of…

  • Maximum output voltage 0 – 50
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01

VLF-60

The VLF-60 is a 60 kV peak sinusoidal VLF hipot test set for medium- and high-voltage shielded power…

  • Maximum output voltage 0 – 60
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01

VLF-80

The VLF-80 is an 80 kV peak sinusoidal VLF hipot test set for field testing of medium- and…

  • Maximum output voltage 0 – 80
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01

VLF-90

The VLF-90 is a 90 kV peak sinusoidal VLF hipot test set that brings the family's highest rating…

  • Maximum output voltage 0 – 90
  • Output current 0 – 30
  • Output frequencies 0.1 / 0.05 / 0.02 / 0.01
Transformer Condition Assessment

Transformer Testers

Benchtop instruments covering the standard power-transformer diagnostic set: turns ratio, winding resistance, insulation dissipation factor and sweep frequency response analysis.

Used together they support acceptance testing, post-fault investigation and periodic condition monitoring of distribution and power transformers.

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FRA100

The FRA100 is a sweep frequency response analyzer (SFRA) that detects mechanical and electrical changes in the core…

  • Frequency range 10 Hz – 10 MHz
  • Frequency inaccuracy ≤0.001 %
  • Sweep points 600 default · max 50,000

TDC-3100

The TDC-3100 is a fully automatic 12 kV insulation power-factor / dissipation-factor (tan δ) and capacitance test set…

  • Internal HV output 0.5 – 12 kV · 2000 VA
  • Dissipation factor (tan δ) ±(rdg ×1 % + 0.040 %)
  • Capacitance (Cx) 15 pF – 60 nF @ 12 kV

TTR-400

The TTR-400 is a portable transformer turns ratio meter that measures turns ratio, voltage ratio and phase displacement…

  • Ratio range 0.9 – 10000
  • Accuracy (by ratio range) ±0.1 % / ±0.2 % / ±0.5 %
  • Test voltage 0 – 160

TWO-1100S

The TWO-1100S is a transformer winding ohmmeter that measures DC resistance of power and distribution transformer windings, rotating-machine…

  • Max. test current 100
  • Resistance range 30 µΩ – 4 Ω
  • Accuracy ±0.2 % rdg ± 2 µΩ

Transformer oil analysis is a separate product line

Online dissolved-gas analysis and laboratory oil-testing instruments are not part of the VA-TEK catalogue. They are built and sold by our sister brand, PAS DGA, at pasdga.com — the same Shenzhen manufacturing group, a different product family.

Visit pasdga.com