phase converter
- Thread starter tlane
- Start date
- Status
- Location
- Massachusetts
Convert the motors? No.
You may be able to replace the motors with single phase models....if space allows. A single phase motor of a given HP will be larger than the same HP in 3 phase.
You can convert the single phase supply to 3 phase a number of different ways.
Keep in mind that a 3 phase load supplied by a single phase source will require 1.73 times the current and that is not including the losses in the conversion equipment.
You may be able to replace the motors with single phase models....if space allows. A single phase motor of a given HP will be larger than the same HP in 3 phase.
You can convert the single phase supply to 3 phase a number of different ways.
Keep in mind that a 3 phase load supplied by a single phase source will require 1.73 times the current and that is not including the losses in the conversion equipment.
kingpb
Senior Member
- Location
- SE USA as far as you can go
- Occupation
- Engineer, Registered
There are static and rotary phase converters on the market. I have not needed to specify either. Perhaps others can better describe their experiences.
natfuelbill
Senior Member
I will be ordering two Phase converters from Phase Technologies, LLC 1141 Rand Road Rapid City SD 57702 (866) 250-7934
I asked them about a million questions about their product, and couldn't find a reason not to proceed.
Give them a call.
Bill
I asked them about a million questions about their product, and couldn't find a reason not to proceed.
Give them a call.
Bill
wirenut1980
Senior Member
- Location
- Plainfield, IN
I would check with the manufacturers of this 3 phase equipment to make sure that it does not react badly to the output of the phase converter. 
hey_poolboy
Senior Member
- Location
- Illinois
Tlane, and others,
I appologize for the comment in my previous post. That was not very becomming, or constructive.
If you google "phase converter" you can find a plethora of manufacturers. In between all of the DIY phase converter pages of course.
Building your own converter is quite interesting though, and you can gain a wealth of information in the process. Don't know that I would use mine commercially, but it gives me something to tinker with.
I appologize for the comment in my previous post. That was not very becomming, or constructive.
If you google "phase converter" you can find a plethora of manufacturers. In between all of the DIY phase converter pages of course.
Building your own converter is quite interesting though, and you can gain a wealth of information in the process. Don't know that I would use mine commercially, but it gives me something to tinker with.
VFD to convert single phase to three phase
VFD to convert single phase to three phase
I'm using a VFD to convert single phase to three phase. The results are shaky at best.
The motor I?m using is a three phase 240 VAC, 7.5 horsepower.
The VFD?s display shows an output of 60 Hz.
The terminal block that it is wired to is measured by a fluke 87 and it reads a
Max 104.26 Hz Min 59.93 Hz Avg is 72.65 Hz.
This motor was started by taking T1 from the breaker to an HOA switch to the coil.
The Voltage is:
L1 to Gnd = 145 ? 165 VAC
L2 to Gnd = 152 ? 167 VAC
L3 to Gnd = 152 ? 170 VAC
The Phases are:
L1 to L2 = 260.2 VAC
L2 to L3 = 260.2 VAC
L3 to L1 = 260.3 VAC
The Amps are:
T1 = 6.8 ? 7.5
T2 = 6.8 ? 7.1
T3 = 6.7 ? 7.0
The Hz at the Starter: Max 710.7 Hz Min 614.1 Hz Avg 668.3 Hz
The Voltage at the Starter: Max 188.1 VAC Min 132.4 VAC Avg 160.3 VAC
VFD to convert single phase to three phase
I'm using a VFD to convert single phase to three phase. The results are shaky at best.
The motor I?m using is a three phase 240 VAC, 7.5 horsepower.
The VFD?s display shows an output of 60 Hz.
The terminal block that it is wired to is measured by a fluke 87 and it reads a
Max 104.26 Hz Min 59.93 Hz Avg is 72.65 Hz.
This motor was started by taking T1 from the breaker to an HOA switch to the coil.
The Voltage is:
L1 to Gnd = 145 ? 165 VAC
L2 to Gnd = 152 ? 167 VAC
L3 to Gnd = 152 ? 170 VAC
The Phases are:
L1 to L2 = 260.2 VAC
L2 to L3 = 260.2 VAC
L3 to L1 = 260.3 VAC
The Amps are:
T1 = 6.8 ? 7.5
T2 = 6.8 ? 7.1
T3 = 6.7 ? 7.0
The Hz at the Starter: Max 710.7 Hz Min 614.1 Hz Avg 668.3 Hz
The Voltage at the Starter: Max 188.1 VAC Min 132.4 VAC Avg 160.3 VAC
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