Two Phase And Three Phase Power Supplies in Stock

ADM stocks Single Phase, Two Phase and Three Phase DIN rail power supplies.

We take a look at what users need to know about using these power supplies.

Two-Phase Power Supplies

In the past, MEAN WELL offered a true two-phase power supply, which was the DRH-120 series that operated from 340-550VAC only.

Since then MEAN WELL has introduced the WDR series, which has a wide input range of 180-550VAC and can also be used as a two-phase power supply. These function perfectly at either 240V or 415VAC input, so they are a good choice if you want to stock only one model and use it on both voltages. It saves on inventory costs.

There is one thing to note with the WDR models - they must be derated at low input voltages. There is a curve in the data sheet showing the available power at the lower input voltages. The following derating graph is taken from the WDR-120 series datasheet:

ADM stocks the complete range of MEAN WELL WDR series wide range input power supplies and most models are available from all four of our warehouses. 

Three-Phase Power Supplies

MEAN WELL has three-phase DIN rail power supplies available with power outputs ranging from 240 Watts through to 960 Watts.

MEAN WELL's three-phase TDR series DIN rail power supplies can also be used as two-phase power supplies if they are derated to around 80% of their output. Note that the noise and ripple figures will be higher when running two-phase input.

The 960 Watt models (TDR-960 series) can be used in parallel, as they feature MEAN WELL's current sharing function. 

Three-phase power is frequently used for high-powered industrial applications such as driving high-horsepower electric motors.

Three-phase power installations are usually more economical than equivalent single-phase because they use less conductor material to transmit electrical power. Whilst three-phase is more costly to install, it may be the better choice for larger projects. In addition, a three-phase motor is smaller than a single-phase motor.

Three-phase electric power consists of three circuit conductors which carry alternating currents. Each circuit conductor reaches its instantaneous peak value at a different time, one-third of a cycle apart (120 degrees). This results in a constant power transfer over each cycle of the current.

The constant overlap of three-phase power means it never falls to zero while pulsating, resulting in the constant power transfer.

Single-phase power falls to zero three times in each cycle. This just means that three-phase power offers superior operating characteristics.

ADM stocks the complete range of MEAN WELL TDR series three-phase power supplies:

As well as these DIN rail mount power supplies, ADM also stocks MEAN WELL's 5000W and 10,000W three-phase enclosed power supplies.

Single Phase power supplies

Using a single-phase MEAN WELL DIN rail power supply is straightforward. They are commonly used is a wide variety of industrial applications. The only thing you do need to watch for is ensuring you have selected a model with the required input voltage.

Most of the single-phase MEAN WELL DIN Rail power supplies have a universal input range of 86-265VAC.

Single-phase power supplies are energy efficient when dealing with smaller industrial loads. However, if your application involves larger loads then you may want to consider a two-phase or three-phase installation.

ADM stocks the complete range of MEAN WELL single-phase DIN rail power supplies. The number of models available is far too many to list in this blog post. To browse the range, please click on the following link:

DIN Rail Power Supplies

Please do not hesitate to contact ADM for further technical information on Two-phase and Three-phase power supplies.

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