9 kVA 3 Phase Variac Transformer

5 out of 5 based on 2 reviews | Write a review

$1,123.68

3 Phase variable transformer input voltage 380V, output voltage selectable from AC 0-430V or 0-500V, 9 kAV capacity, variac voltage regulator with built-in purple copper coil, strong conductivity, safer to use.

Output Voltage *

SKU: ATO-VVR-TH9

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Delivery date: 6-12 days

Overview

Selling cheap 9 kVA variac variable transformer, three phase, input voltage 380V, metal dashboard adjustable voltage 0-430V, adjust different voltage, corresponding to different output power.

Specification

Model: ATO-VVR-TH9
Rated Power: 9 kVA
Input Voltage: 380V
Output Voltage: 0~430V, 0~500V
Frequency: 50/60 Hz
Rated Full Offset Current: 12A
Insulation Resistance: ≥5 MΩ
Pressure Resistance: 2000 V/1min
Weight: 31 kg
Dimension: 270mm x 210mm x 460mm
Certificate: CE

Wiring method

Installation and use of three-phase variac transformer should be noted: the wiring must be firmly pressed, there can be no loose.

Three-phase variac transformer is a three-phase four-wire system, the input side should be connected to the zero line, when using the regulator to adjust the voltage should be adjusted from 0V to high voltage, the output voltage is different corresponding to the load power is different.

Variac transformer wiring

3 Phase 9 kVA Variac Transformer Details

Three phase variable transformer details

Three phase variac transformer detail

Tips: What is the difference between a contacting regulator and a transformer?

Different working principles: the input range of the voltage regulator is any sliding from 0V to the rated value range, and the point of the input voltage can be adjusted at any time to meet the stability of the output voltage. The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage to achieve voltage conversion according to a certain transformation ratio.
Different properties: A transformer is an electrical device used for electrical energy conversion, which can convert alternating current energy of one voltage and current into another alternating current of voltage and current of the same frequency. Simply put, it is to convert different AC power into AC power of the same frequency.
The control motor is different: the working principle of the voltage regulator is the same as that of the transformer, the only difference is that it has a control motor, which can adjust the output voltage by changing the coil tie ratio.

Existing reviews of 9 kVA 3 Phase Variac Transformer

Maximum phase-to-phase voltage

If I connect a 400V phase-to-phase voltage (Delta input) to the ATO-VVR-TH9, what is the maximum phase-to-phase voltage I can achieve at the ATO-VVR-TH9's Delta output?

From: Neshov | Date: 03/08/2025

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ATO Responded

If the ATO-VVR-TH9 device's Delta input is connected to a 400V phase-to-phase voltage, its maximum output voltage is 0-500V AC.

I purchased 2 ATO variac transformers

I bought a 0-500V variac transformer, the voltage in this range can be adjusted, the voltage adjustment is very accurate, the instrument panel is also very clear, and the quality is really good.

From: Iver | Date: 12/05/2022

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