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[ISOLATED] Japanese Step Down Transformer

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[ISOLATED] Japanese Step Down Transformer

(3 customer reviews)
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Isolated Japanese Step Down Transformer – Isolation Japanese Step Down transformers are essential for safely running your Japanese 100 Volts rated appliance in Australia on the Australian 240 Volts power mains supply with additional protection and filtering features. 

Our Tortech Isolated transformers include additional features detailed below which are not offered by our Economy model transformer (see here for Economy version).

This model is fully isolated (insulated input to output) through a double wound design and is the only model that provides additional protection for your appliance against voltage spikes in the power supply, as well as helping filter the audio quality for amplifier type equipment.

Note: This model does not include an Earth Screen. If you want to have an Earth Screen included, Tortech can manufacture a custom unit by specifying your design requirements here.

Read more about the important safety differences of Isolated transformers here.

This unit uses a toroidal transformer to convert the 240 Volts Australian mains supply down to 100 Volts Japanese rating, thus allowing your Japanese device to run in Australia.

Simply plug your transformer into the Aussie power wall outlet and then connect your Japanese device into the power socket on the unit. Once they are both connected, switch the power on at the wall socket and for the step down unit, and you’re ready to go!

Protect your Japanese appliance - Buy a Step Down that is guaranteed safe:

  • Our transformers are made to the highest quality standards
  • All voltage converters come with a 1 Year Money Back Warranty
  • Designed to protect your device
  • Unlike others, our voltage converters are designed to run continuously 24/7 - read why important
  • Quality casing & included Safety Fuse protection
  • This new range is lighter & more compact
  • Safety fuse protection (50W and above)
  • Strong carry handle, enclosed and strong metal construction rubber feet (500W and above)
  • Thermal overload in the winding of the transformer
  • Thermally tested to Australian Standard AS/NZS61558
Service is Important.
We Offer Quality Service.

At TorTech, we offer assistance in selecting the right voltage converter for you! Our team of specialised engineers are happy to examine your product and assist in helping pair you with our recommended voltage converter out of a wide range of stock. If you are experiencing any difficulties from our transformers with your product, we can help resolve the issue by testing both the transformer and product at TorTech. We aim to ensure you can continue running your appliance without any problems.

Model Comparison

Part NumberWattsOutput AmpsDimensions (l x w x h)WeightOutletsHandle
SD100--5050W0.5A134mm x 92mm x 71mm1.5kg1no
SD100-100100W1.0A168mm x 158mm x 91mm3.5kg1no
SD100-300300W3.0A176mm x 159mm x 105mm4.5kg1no
SD100-500500W5.0A209mm x 162mm x 128mm7kg1yes
SD100-10001000W10.0A230mm x 182mm x 130mm10kg2yes
SD100-15001500W15.0A300mm x 230mm x 180mm16kg2yes
SD100-20002000W20.0A300mm x 230mm x 180mm16kg2yes

FAQs:

When decided on which Transformer will be suitable for your appliance/s, it is important to consider the Power Rating of the device/s you wish to run on the Transformer.

To determine the Power Rating of your appliance/s, you must determine the total wattage (W) or total ampere (A). This will be presented on the product in a electrical specification label, or in the product manual.

Once the total wattage (W) or total ampere (A) is determined, please use our ‘Calculator’ located on the tab section of this page. This calculator will help guide you on which Transformer is recommended using your appliance/s details.

Always note that the Transformer must always be 20-25% higher in wattage (W) rating than the total wattage of your appliance/s.

E.g: Playstation 3 uses 380 Watts, so you will need the 500 watt rated Step Down transformer.

If a motor is included in your appliance/s, then you should select a Step Down Transformer rating approx 25% higher than your motor as a buffer.  

Motors have a higher power demand on the Step Down Transformer and draw higher start-up currents which need to be allowed for.

Most motors have a rating plate on them with their power (VA), wattage (W) and/or ampere (A) rating.

If so, how critical is this timing device? Our Transformers convert the voltage (V) and cannot change the frequency (Hz). 

Please note Australia’s power grid supply operates at 50Hz. 

If a timing device is included, the speed of the device may change due to the frequency difference in the power grid. This results in the appliance/s operating at 50Hz (Australia) when designed for 60HZ (Western Japan). An example of which appliance/s may be more affected by this are: old clocks, motors/fans/microwaves.

 Most modern electronic devices should not be affected. Please read further about frequency for more information.

Calculation for Wattage:

Wattage (W) = Ampere (A) x Voltage (V)

An Example is Wattage = 5 Amps x 110 Volts = 550 Watts

Please check the total watts (W or VA) of all devices and ensure this is 20% lower than the power rating (W or VA) of the Step Down Transformer. If using more than two devices, please use a USA Powerboard to run multiples devices. 

Our Step Down transformers reviewed by toolreviews.com – read the Independent review of our Step Downs.

Additional FAQs about the frequency difference & more technical information, please read here.

For other general FAQs, please click here.

Still unsure which Step Down you will need? See our guide to choosing the right Step Down for you here.

For further technical assistance, please contact our Sales engineers on: (02) 9642 6003, by email at: enquiries@tortech.com.au or use our Design Form.

Quality toroidal transformer inside
Strong riveted carry handles
Voltage Converter Selector
  • Voltage
  • Amps or Watts?
  • Calculator
  • Results

Additional information

WeightN/A
DimensionsN/A
Wattage

50W, 100W, 300W, 500W, 1010W, 1500W, 2000W

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3 reviews for [ISOLATED] Japanese Step Down Transformer

  1. Dan (verified owner)

    Great product at an unbeatable price. I used it for my audio equipment and noticed a huge change in my system in a good way.
    Delivery was fast.

    Only one thing that i concern is that the unit doesnt seem to provide earth in the output socket ? Or is it a characteristic of an iso tran ?

    • Alex

      Thank you for your review Dan.
      That is correct that this is a characteristic of an Isolated Transformer.
      The Transformer’s input Earth is not carried through to the output to ensure complete Isolation.

  2. Kim (verified owner)

    Top quality product.
    I brought 2 x large and 2 x small Tortech step-up converters with me to Japan four years ago and they ha e worked every day.
    Now back in Australia I have bought 2 x step-down converters to use here – and again; working perfect.
    Can only recommend their products as high quality and well made !

  3. Yan

    Great compact transformer and works well. I am appreciative that it was explained to me why I needed a Japanese stepdown over a USA stepdown. Even though the voltage is slightly different, running a japanese device from a USA stepdown can apparently eventually over volt and destroy it. This is why i switched to a Japanese stepdown. Great service and time taken to explain this important difference which I am greatful for.

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Item 1 – Cast Resin type Isolation Transformer

HV Winding 1

LV Winding 1

LV Winding 2

Rated power

kVA

315

1250

1250

Rated voltage

kV

33

0.48

0.48

Frequency

Hz

50

Off circuit tapping links

%

±2.5%, +-5%

Nil

Nil

Connection

Delta

Star

Star

Vector group

Dy11y11

Insulation level (Maximum BIL/AC)

kV

150/70

10/3

10/3

Winding material

Aluminium cast windings in quartz filled self-extinguishing epoxy resin

Aluminium cast windings in quartz filled self-extinguishing epoxy resin

Aluminium cast windings in quartz filled self-extinguishing epoxy resin

Type of winding

Vacuum Resin Cast

Vacuum Resin cast

Vacuum Resin cast

Standard

AS 60076-11, AS 2374

Installation

Indoor

Degree of protection

IP22

Type of cooling

AN/AF

Installation altitude

< 1000 a.m.s.l

Climatic/environmental

And fire behaviour class

E2-C2-F1

test