Which type of phase converter for Hammer k3 saw

Mbconstructionjoinery

Mbconstructionjoinery

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Hi all I have picked up Hammer k3 winner table saw for a bargain price but it is 3 phase and I only have single phase power in my workshop, I am going to buy a phase converter to run the saw but wondered if a static converter would work or would I need a rotary converter?
Thanks
Mark
 
I'd enquire about having it converted (no idea if it's expensive with a Hammer) .. just to see if the phase converter is in the same ballpark as the motor conversion.
 
Check the possibility of using one of the new range of silenced autostart generators as this could be cheaper.
 
I am in a similar position, as i have 3 phase in my workshop but am retiring and keeping my machine to set up a home workshop which only has single phase. I made enquiries with Felder UK re changing the motor to single phase, cost is ridiculously expensive, probably cheaper to sell machine and buy a new from Felder. I have made enquiries re phase converters, my understanding is that if you just have one machine running on the converter then a static converter is the way to go, but if you have more machines (say table saw and extractor) the a rotary converter is the way to go.
 
Mitchwood said:
I am in a similar position, as i have 3 phase in my workshop but am retiring and keeping my machine to set up a home workshop which only has single phase. I made enquiries with Felder UK re changing the motor to single phase, cost is ridiculously expensive, probably cheaper to sell machine and buy a new from Felder. I have made enquiries re phase converters, my understanding is that if you just have one machine running on the converter then a static converter is the way to go, but if you have more machines (say table saw and extractor) the a rotary converter is the way to go.
Click to expand...

Thanks for the info Mitchwood. I had a feeling Felder wood want an arm and a leg to change motor, I had been looking at rotary phase converters but they are a few £££ more than the statics, I will only be running the saw from it as the rest of my machines are single phase. There has also been a couple of people tell me that the roatory converters are more stable and easier to set up, but I have no experience with 3 phase power or converters so not sure what to do.
 
I know I need a 5.5kw-6.0kw unit the difference between the new static and rotary converter is about £350-£400 but I can pick up a second hand 6kw roatory boost energy unit for the same price as a new static unit is it worth buying this type of kit 2nd hand or is it best to buy new, do they burn out after time or are they a one time buy?
 
Stay away from a static converter. They are nothing more than a motor starter. Once the motor gets up to speed, the converter cuts out and you are left running your motor on single phase. The best solution is probably a variable frequency drive, and can typically be found cheaper than a rotary converter.
 
It will most likely be the only 3phase item I will own as I already have mos of he bigger machines I want I will look into this vfd as i'v not heard of that option until it was mentioned earlier in this thread
 
Mbconstructionjoinery said:
It will most likely be the only 3phase item I will own as I already have mos of he bigger machines I want I will look into this vfd as i'v not heard of that option until it was mentioned earlier in this thread
Click to expand...
A vfd is a 3-phase motor driver (controller). Because of the way it operates, it has the side benefit of also being an electronic phase converter. To help you understand it better, it is actually very similar to the motor controls on all of the Festool brushless motors. It takes the incoming electrical power and converts it internally to DC power. The electronics then create an artificial 3-phase output to power the motor.

VFDs normally want 3-phase power at the input because it is more efficient to create DC power from that. However, they will still create their internal DC bus from just single-phase power. Most of the smaller VFDs are already rated to operate from single-phase, but for those that aren't you just need to upsize them a little. But even that is probably not necessary because your Hammer won't likely ever draw full power from its motor.

A VFD is an intelligent device, and that means it can interface to your existing controls for on/off function with just a little wiring. Your current controls that previously controlled the motor will instead control the VFD, and the VFD controls the motor.

In selecting a VFD you will need one that is rated for your input voltage and can supply the voltage that your motor requires. If your motor is 208 to 240 3-phase, then this should be very straightforward.
 
Phase converters won't be as efficient as switching the motor to single phase. Cost? Well you "might" be able to sell the 3 phase motor.

What motor brand does Felder use? Could it be switched to a more common branded motor that is cost effective? There may be other motor brand options that bolt in. If you can find the parts sheet it might list the single phase motor part number, then you can search online for the best price. Years ago I bought a rather large 3 phase 5,000psi breathing air compressor and converted it to single phase with a new motor. For me it was the right decision, especially with long run times and an 18amp continues pull. Cost was about the same as a VFD converter.

Enjoy your new saw  [big grin]
 
  I have a couple of 3 phase machines running VFD's and my big Felder 975 runs on a Phase Perfect digital phase converter (10HP unit).    Rotary phase converters are louder and less efficient than a digital would be.  A digital phase converter would be less hassle to install and get going over a VFD depending on what you can find for source documentation and your skills.  Stay clear from a static phase converter because for all intents purposes you will lose 1/3 of your power.

http://www.phaseperfect.com/

Chris...
 
I have had good luck buying used no name vfd's off ebay.

I have bought from surplus center as well.

The one on my 37" dual disc sander was over 1000 bucks new, glad I bought the sander with it on there.
 
I run my spindle moulder through a vfd, excellent control over motor speed, direction and braking,
2800rpms to standstill in 5 seconds
 
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