VLF Series Very Low Frequency Tester

Introduction:

The VLF testers (Generator) are suitable for Testing cables, transformers, switchgear, Rotating machinery, and other Electrical apparatus.

Features:

Easiest to use Fully automatic micr℃ontroller

Built-in printer

True sine wave output

Real-time display of actual output waveform

Ergonomic, menu guided, large backlit LCD

Storage of test results for later retrieval and print.

Over voltage and current protected

Variable frequency 0.1Hz, 0.05Hz, 0.02 Hz

Data of current, voltage and waveform directly sampled at HV side.

AC testing does not degrade good cable insulation

Harmful space charges are not injected into the cable insulation

No traveling waves are generated during testing

Rugged and reliable design less prone to failure from transients

Short circuit protected.

Status display of all important safety functions and messages.

Safe, easy to use operation with emergency off and key switch l℃k-out.

Fully integrated discharge circuit to safely ground the DUT after testing.

Zero start interl℃k.

Zero voltage switching.

Specification:

Input: 220 ± 10% Volts AC, 50/60 Hz, single phase.

Output-Voltage. 30KV

Output frequency: 0.1Hz, 0.05Hz, 0.02Hz.

Stability of frequency: Fluctuation < 0.5%

Measurement accuracy: ± 3%.

Positive and negative voltage peak errors: ≤ 3%.

Voltage waveform distortion: ≤ 5%

Construction: In two units: Controller and Booster.

Ambient conditions of use: Temperature Indoor and outdoor: -10ºC to + 50ºC.

Humidity: ≤ 85%

VLF Models for Option :