single phase variac transformer | 3 phase variable transformer

VARIAC TRANSFORMER

accurate & reliable voltage control

Variac Transformer

Manual &
Motorised Design

For a diverse variety of applications from Quality Control Testings to Low Voltage Performance Evaluation, Ashley-Edison’s endurable range of Variac Transformers deliver an efficient & reliable method of varying output AC voltages from 0 to 117% of line voltage.

3AMPS to 800AMPS
up to 1,000vac
input voltage
adjustable output voltage 0~117%
stepless voltage control
Variable Transformer

RELIABLE & EFFICIENT
VOLTAGE CONTROL​

low operating torque

All Ashley-Edison Variac Transformers are built with an ultra smooth commutator surface and operates with optimum contact pressure of the brush on the commutator. Combined with firm positioning of the coil and internal components, this ensures delivery of low operating torque.

high efficiency and
excellent regulation

With extremely small power loss attributes, Ashley-Edison Variac Transformers deliver an efficiency of 98% or better and negligible variations in output voltage, from no load to full load.

diverse variety of applications

Typical use of a Variac Transformers include quality control testing, electronic equipment burn-in, low voltage performance evaluation, DC rectifier/regulator analysis or other industrial and engineering applications.

Technical Features

input voltage

+6% of nominal (i.e. 240V models are continuously rated at 254V)

SURGE RATING

10x max current rating for 1 second
3x max current rating for 60 seconds
2x max current rating for 5 minutes

ADJUSTABLE OUTPUT VOLTAGE

Continuously variable from 0 to 117% of input voltage.

EFFICIENCY

More than 98%.

Power Factor

Any

FREQUENCY

47Hz to 60Hz

volt-free remote monitoring contacts

With RS-485 interface or Mimic Panel option.

cloud-based data system analysis

Real-time wireless applications for Measurement and Verification of energy and resource consumption.

COMPLIANT WITH INTERNATIONAL STANDARDS
ISO 9001:2015 | CE Mark | BS EN 55022 | BS EN 61000 | BS EN 60529 | CE MARKED

Product FINDER

SINGLE PHASE
Variac transformer

AE-HB

3Amps ~ 80Amps

  • Input: 220V / 230V / 240V
  • Output: 0V~257V / 269V / 280V
  • Indoor IP20 Enclosure

AE-LB

3Amps ~ 80Amps

  • Input: 110V / 115V / 120V
  • Output: 0V~129V / 134V / 140V
  • Indoor IP20 Enclosure

MAE-HO

3Amps ~ 80Amps

  • Input: 220V / 230V / 240V
  • Output: 0V~257V / 269V / 280V
  • Indoor IP20 Enclosure / Open Type

mae-lo

3Amps ~ 80Amps

  • Input: 110V / 115V / 120V
  • Output: 0V~129V / 134V / 140V
  • Indoor IP20 Enclosure / Open Type
THREE PHASE
Variac transformer

ae-3-Hb

3Amps ~ 60Amps

  • Input: 380V / 400V / 415V
  • Output: 0V~445V / 468V / 485V
  • Indoor IP20 Enclosure
  • Optional Input Circuit Breaker & Digital Meters

AE-3-lB

3Amps ~ 60Amps

  • Input: 190V / 200V / 208V
  • Output: 0V~222V / 234V / 243V
  • Indoor IP20 Enclosure
  • Optional Input Circuit Breaker & Digital Meters

AE-3-HB-480

3Amps ~ 60Amps

  • Input: 440V / 460V / 480V
  • Output: 0V~515V / 538V / 562V
  • Indoor IP20 Enclosure
  • Optional Input Circuit Breaker & Digital Meters
 

mAE-3-HB-dm-cb

10Amps ~ 150Amps

  • Input: 380V / 400V / 415V
  • Output: 0V~445V / 468V / 485V
  • Indoor IP20 Enclosure / Open Type
  • Input Circuit Breaker & Digital Meters fitted as standard
 

MAE-3-lB-DM-CB

10Amps ~ 150Amps

  • Input: 190V / 200V / 208V
  • Output: 0V~222V / 234V / 243V
  • Indoor IP20 Enclosure / Open Type
  • Input Circuit Breaker & Digital Meters fitted as standard
 

MAE-3-HB-DM-CB-480

10Amps ~ 150Amps

  • Input: 440V / 460V / 480V
  • Output: 0V~515V / 538V / 562V
  • Indoor IP20 Enclosure / Open Type
  • Input Circuit Breaker & Digital Meters fitted as standard

CONNECT WITH US
TO DISCOVER MORE.

From brownouts to severe voltage fluctuations, Ashley Edison takes care of all your power needs by delivering optimised, stable voltage supply to your electrical system.

 

Curious to learn more? Get in touch with us. We’ll get back to you with a quote or solution within 24 hours and put all your questions to rest.

ASHLEY Edison International LTD

OUR PROJECTS

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Stay Safe With Greater Protection

As safety is our utmost priority, Ashley Edison prepares for every scenario possible
—taking the puzzle out of your protection.

Designed And Engineered With Safety In Mind

We leave nothing to chance when it comes to larger capacity units (≥400KVA). By installing high-quality protective acrylic shields in front of live parts, we ensure the safety of your personnel at all times. For enhanced protection during installation, all distances between uninsulated metal parts, busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

Outfitted with fireproof cable trunking, this protective solution safeguards against long fire exposure even in hazardous areas and explosive atmospheres—providing maximum safety for mission critical applications.

Fuss-Free Installation. Seamless Operations.

To ensure ease of installation, Ashley Edison addresses the concerns of contractors and installers by keeping it simple.

Internal-AVR

ALL TERMINATION POINTS ARE MANUFACTURED FOR EASY ACCESS

We keep the installation process simple and streamlined by allowing sufficient working space for installers. Taking the nut and bolt intrusions into consideration, we ensure that the distance between the uninsulated metal parts, the busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

 

Even in units with larger capacities, all busbar terminals are clearly marked out, and well positioned in line for easy identification of individual input and output terminations. Installation of these terminations are similar to those practised in high voltage transformers.

Easy Maintenance

Annual Ocular Maintenance
Visual Inspection 230
#1

Conduct Visual Inspection On Voltmeter:

Ensure reading is set to your desired set output voltage value (e.g. 230V).

LED Status
#2

Ensure LED Status Indicators are at “Normal”.

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#3

Visual Observation Of Variable Transformer Surface:

Use airbrush for dusty environments if necessary.

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#4

Visual observation if carbon brush is not worn out.

Moving Motor
#5

Conduct visual inspection to check variable transformers are all regulating (moving).

AE-MBB-PCB-Card-dark

Accuracy. Beyond Imagination.

The digitally enhanced Ashley Edison MBB Card ensures pinpoint voltage stabilisation against the most erratic anomalies, allowing you to protect precious uptime, effortlessly. Harnessing ultra precision capabilities to produce some of the tightest output voltage tolerance available in the industry, the Ashley Edison MBB Card delivers ±0.5% voltage accuracy, enabling your load equipment to enjoy optimal voltage supplies, regardless of load change in your electrical system.

Expert Digital Control

Utilising the advantageous measurements of true RMS, the Ashley Edison MBB Card’s reads both perfect, sinusoidal waves, as well as complex, distorted non sinusoidal waves—up to 0.1V accuracy. Coupled with lightning fast response time of 1.5ms, this expert digital control feature equips your load with total voltage protection that is precise, continuous and ultra responsive.

AE Digital Control Display_230v

Universal Presettable Function

The Universal Presettable Function onboard the Ashley Edison MBB Card allows seamless control of your desired output voltage value on all 3 Phases—with just a touch of a button. This multifunctional feature enables each AVR to fully operate with just 1 card, instead of separate cards for each individual phase. Fitted LED Output Voltmeter Display and Alert Indicator better facilitates easy status monitoring while performing maintenance on your AVR.

AE MBB Card

Microcontroller Unit (MCU)

MicroController Unit (MCU) helps you to deliver high speed and reliable efficiency in the AVR’s operations with less heat generation and reduced power consumption. Used in Supercomputers, Surface Mount Technology (SMT) allows components in the Ashley Edison MBB Card to be aligned closer together, creating a more compact and lightweight end product. Additional safety wire-to-board feature establishes fail-proof connectivity between circuits—so you can work safely on your AVR.