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> Build a digital phase converter: diy plans, tips.
Build a digital phase converter: diy plans, tips.
Plans and instructions to build
1. a rotary converter 4kW (5hp) based on standard parts, no controller is needed, and nine plans to build
2. a digital rotary single to three-phase converters between 4kW and 24kW (5hp to 30hp) which requires a phase-balancing digital controller.
Phase converters run one or several three-phase machines on single phase power.
Non-digital converters are acceptable with simple machines in a home workshop.
Digital converters are needed when a perfect phase voltages balance is wanted for CNC, PLC, plasma cutters, VSDs, welders, high motor output.
Non-digital rotary converters (5hp plan included) do not require a controller but have some minor drawbacks:
- The generated phase output voltage varies somewhat with changing loads.
- CNC / PLC, plasma cutters, VSDs, welders will most likely trip out due to voltage unbalance.
- Motors and machines cannot develop their full nameplate power.
- Contactors wear and will fail after some time if not replaced (maintenance).
- Motors accelerate sluggishly.
Digital rotary converters (nine plans 5-30hp are included) offer the best features of all converters today:
* Voltages remain symmetrical under all load conditions.
* CNC, PLC, VFD, welders, plasma cutters work fine.
* Motors will develop their full nameplate power.
* For long life cycle, no contactors, no electrolytic capacitors are used.
* Expected operating life 80.000 hours.
* No EMC emission, no RFI, no harmonics are generated. No filter, no shielding needed.
* Power quality and emissions meet all industry standards.
* Motors and machines accelerate and reverse fast.
* Specifications are as with Digi-Phase in the UK and Boosters in the US, Australia, New Zealand.
* No restrictions, all loads are permitted: Motors, electronics, heaters, transformers, rectifiers.
* Quiet operation with modern high efficient motors.
* Rides through black- and brown-outs.
* Controllers are available in Australia, New Zealand, UK, USA.
* Manufactured since 1998, E- T- and F- controllers are used in more than 2600 converters worldwide today.
Build or use a safe and ventilated sheet metal box.
Assemble the parts inside, the motor in- or outside the box.
Ask an electrician to finish the wiring and to connect your new phase converter to your machines.
A standard three-phase induction motor, 2 pole if possible, ideal would be the new high efficiency standard.
Standard motor-run capacitors.
Appliances wires, connector blocks, wire terminals.
If to be made for 50Hz: a single phase three-wire step-up autotransformer.
If digital: a EuroTech digital controller.
Parts, controllers, complete kits, phone and email support, complete solutions are available from sources in the UK, in the US, in Australia.
Sources, parts and other details are published (google) and listed in the supplied documents.
Reading the wiring diagrams requires electrical knowledge.
One wiring diagram for a 4kW or 5hp single to three-phase converter using standard contactors instead of a controller.
Part specifications, building instructions, tips. 5 pages,
nine wiring diagrams covering different converters 4 8 12 16 24kW (5 10 15 22 30HP) based on controller types E, T and F.
Part specifications, building instructions, tips. 15 pages.
Email and phone support for someone who understands electricity.
No movies, no books, not the internal circuitry of the digital controllers.
Supply voltage to your new Booster converter will be single phase 240V (220-240V) 50Hz or 60Hz. Or 480V 50Hz and SWER line.
* in 60Hz networks: 3x 240V USA, Canada
* in 50Hz networks: 3x 415V UK, Ireland, Europe, Asia, Australia.
