Home |
Search |
Today's Posts |
|
Woodworking (rec.woodworking) Discussion forum covering all aspects of working with wood. All levels of expertise are encouraged to particiapte. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
Assume that I have in front of the above referenced options. I can
pick only one - a VFD, a (rotary) Phase Converter or straight 3-phase power for the 3-phase 16" Rockwell RAS I picked up for $300. In the long run, which will cost less to own and operate over time? Assume the 5hp VFD is $250 and the 5hp converter is $400. Am I likely to spend a lot more money on power if I have to spring for 3-phase direct? Manintenance issues with the VFD and converter relative to 3-phase power - and to each other? Thanks, and I'm googling too. JP ************ Phased. |
#2
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
"Jay Pique" wrote in message ups.com... Assume that I have in front of the above referenced options. I can pick only one - a VFD, a (rotary) Phase Converter or straight 3-phase power for the 3-phase 16" Rockwell RAS I picked up for $300. In the long run, which will cost less to own and operate over time? Assume the 5hp VFD is $250 and the 5hp converter is $400. Am I likely to spend a lot more money on power if I have to spring for 3-phase direct? Manintenance issues with the VFD and converter relative to 3-phase power - and to each other? Thanks, and I'm googling too. JP ************ Phased. Can you get 3 phase power in your shop? Three phase will be cheaper to run because all those converters are not 100 % efficient. Jim |
#3
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
|
#4
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
|
#6
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
Jay Pique wrote:
Assume that I have in front of the above referenced options. I can pick only one - a VFD, a (rotary) Phase Converter or straight 3-phase power for the 3-phase 16" Rockwell RAS I picked up for $300. In the long run, which will cost less to own and operate over time? Assume the 5hp VFD is $250 and the 5hp converter is $400. Am I likely to spend a lot more money on power if I have to spring for 3-phase direct? Manintenance issues with the VFD and converter relative to 3-phase power - and to each other? Thanks, and I'm googling too. JP ************ Phased. I prefer a RPC over the VFD, but is mainly a personal preference unless you need the variable speed the VFD allows. VFD's take longer to get the motor up to speed, I have noticed. I have also killed a static PC and a VFD on my Bridgeport mill but the RPC is still going strong after 5 years of use. I made my 5Hp RPC for less than $30 with salvaged components, it is very easy to do. Straight 3-phase is best, unless you need variable speed, but for only 1 tool will cost alot to install. MikeB |
#7
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
On 26 Oct 2005 09:44:33 -0700, "Jay Pique"
wrote: Assume that I have in front of the above referenced options. I can pick only one - a VFD, a (rotary) Phase Converter or straight 3-phase power for the 3-phase 16" Rockwell RAS I picked up for $300. In the long run, which will cost less to own and operate over time? Assume the 5hp VFD is $250 and the 5hp converter is $400. Am I likely to spend a lot more money on power if I have to spring for 3-phase direct? ask your electric company. policies are very local- some places they'll refuse to hook it up to a residential building, other places there is a hookup fee, other places they will set you up for free. how it will compare per unit cost I have no idea. Manintenance issues with the VFD and converter relative to 3-phase power - and to each other? Thanks, and I'm googling too. JP ************ Phased. |
#8
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
If three phase power at the right voltage is available it will require
a seperate wire run to the shop and meter. There is a monthly charge just like your electric bill. If you do not have a high demand it is not horribly expensive but I would not pay it for a hobby. Is it an option to change the motor to a 220 volt single phase. ? |
#9
|
|||
|
|||
VFD versus Phase Converter versus 3-phase power
Jay Pique (in )
said: | Assume that I have in front of the above referenced options. I can | pick only one - a VFD, a (rotary) Phase Converter or straight | 3-phase power for the 3-phase 16" Rockwell RAS I picked up for | $300. In the long run, which will cost less to own and operate | over time? Assume the 5hp VFD is $250 and the 5hp converter is | $400. Am I likely to spend a lot more money on power if I have to | spring for 3-phase direct? Manintenance issues with the VFD and | converter relative to 3-phase power - and to each other? Jay... I got a sale flyer from Enco today. They're advertizing Phase-a-matic(tm) static phase converters with prices of US$123.95 for a 1-3HP converter and $150.95 for a 3-5HP converter. It might be worth checking out catalog numbers DN297-3715 and DN297-3725 at http://www.use-enco.com HTH -- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/solar.html |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Increasing capacity of a phase converter. | Metalworking | |||
Power Supply Repair | Electronics Repair | |||
Rotary Phase Converter | Metalworking | |||
Phase converter balancing | Metalworking | |||
were to buy vfd | Metalworking |