Any experience with a Digital Phase Shifter?

[BGHansen]

Curious if anyone here has seen and/or used one of these devices?




Here's the link to this device on eBay:

Single to 3 Phase Converter, Use 1HP(0.75kW) 3A Motor 200V-240V Only, MY-PS-2 | eBay

Find many great new & used options and get the best deals for Single to 3 Phase Converter, Use 1HP(0.75kW) 3A Motor 200V-240V Only, MY-PS-2 at the best online prices at eBay! Free shipping for many products!

www.ebay.com

I know most guys go with VFD's to convert single to 3-phase and gain many motor controls at the same time. However, you need to wire the VFD directly to the motor. I typically see added control boxes for ON/OFF, speed control, etc. Looks like this device is essentially a VFD without all of the programming capability. Might be an option for getting 3-phase if you want to maintain all of the original equipment's features. If I'm interpreting it correctly, just wire single phase in and your get 3-phase out. Of course, at $100 for a 1 HP converter, maybe the VFD is still a cheaper options.

Bruce

 

[markba633csi]

It looks like a VFD minus all the external control options, so you might as well buy a VFD for the same price
Plus it looks like a small package with minimal filtering, who knows how much emi it generates- your grandma's am radio will be rendered useless

-M

 

[mksj]

I did read a post about someone else that tried one and also took it apart, basically a static converter with some capacitors and some circuitry to switch them in/out is my guess. It is not a VFD. He was not impressed and if I recall it failed on him, Amazon reviews are hit or miss. "It sucks! It is not balanced at all two legs are pulling 12amps and the 3rd is 50amps . No good did not run long enough to damage anything but it will happen with those numbers. "

Amazon.com: Customer reviews: DPS Used for 7.5HP(5.5kW) 23A Motor, Single to 3 Phase Converter, MY-PS-10, 1 DPS Must Be Used for 1 Motor Only, Input/Output 200-240V, UL Listed

Find helpful customer reviews and review ratings for DPS Used for 7.5HP(5.5kW) 23A Motor, Single to 3 Phase Converter, MY-PS-10, 1 DPS Must Be Used for 1 Motor Only, Input/Output 200-240V, UL Listed at Amazon.com. Read honest and unbiased product reviews from our users.

www.amazon.com

 

[Dhal22]

Looking through this forum for converter discussions and ran across this. Funny that I'm removing a similar model and sending it back to Amazon.

 

[Dhal22]

I'm thinking rotary converter just to be sure.

 

[ErichKeane]

I've got two of them, 1 that is 2 7.5s in a box (not currently being used, and 1 that is single 7.5 (on my mill) These ARE just a digital static phase converter. The do a good enough jobs for what they are. I swapped the big one to a rotary because I found one cheap enough, but don't really have any problems with these.

 

[frugalguido]

Or just go Phase Perfect and be done. Phase balance very close, like better than 1%. Used one for years and the resale value is high.