Triple Frequency Generator 150Hz Induced Voltage Test

The HMDBF is primarily used for induction withstand voltage tests on transformers and instrument transformers, particularly for evaluating the longitudinal insulation between turns, layers, sections, and phases of windings. Utilizing power electronics technology, the equipment features a frequency converter at its core, combined with digital control technology, enabling it to output test voltages at multiples of 50 Hz, 100 Hz, 150 Hz, and 200 Hz, thereby meeting the requirements for induced withstand voltage and voltage-current characteristic testing of power equipment such as transformers and instrument transformers.

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Description

Technical Parameters

Products Features

HMDBF 20kVA 500V03

1. Advanced Technology, Replacing Traditional Methods

This device replaces traditional three-phase, five-column triple-frequency generators by using a variable-frequency regulator to achieve multi-frequency output.

It is compact and lightweight, making it easy to carry and use on-site, and it is easily scalable to high power levels.

2. Flexible Frequency Selection

Supports 1x, 2x, 3x, and 4x frequency (50/100/150/200 Hz) outputs to accommodate various testing requirements, not limited to triple-frequency operation.

3. Fully Digital Control, User-Friendly Operation

Features a 7-inch color touchscreen with an intuitive human-machine interface.

Supports both automatic testing (one-button voltage ramp-up, stabilization, timing, and ramp-down) and manual testing (with adjustable step size, minimum 0.5 V), ensuring precise control.

Includes a built-in LC filter circuit to ensure waveform distortion <3%; an external compensation inductor (with taps) enhances load-carrying capacity.

4. Comprehensive Protection Features

Equipped with triple protection-overvoltage protection, overcurrent protection, and flashover protection-to ensure the safety of both the equipment and the test specimens.

5. Built-in Voltage-Current Characteristic (Excitation) Testing Function

Capable of automatically testing the voltage-current characteristic curves of equipment such as current transformers: automatically increases voltage, records current, and plots the curve.

Supports setting the rated voltage on the low-voltage side (e.g., 100 V, 100/√3, 100/3, 150 V, 220 V). The test low voltage is generally set to 1.2–1.5 times the rated value, and current/voltage limit values can be configured.

6. Convenient Data Management

Features a built-in file management system that supports saving test data and thermal printing, facilitating record-keeping and archiving.

Products Parameters

Rated Capacity 5 kVA
Input Voltage AC 380 V ±10% (single-phase); can also be connected to 220 V (capacity halved)
Input Frequency 50 Hz
Output Voltage 0–500 V (voltage can be increased by connecting an external step-up transformer)
Output Frequency 50 Hz, 100 Hz, 150 Hz, 200 Hz (selectable)
Waveform Distortion Rate <3%

HMDBF 20kVA 500V02