3 phase static converter

Heavily loaded equipment usually consists of equipment with pumps, blowers, fans, compressors, etc. NOTE: It is best to mount the converter upright, not upside-down or side-ways as shown here. The single-phase neutral wire is not required for operation of the converter.

Properly ground all electrical equipment. Use a grounding clip to attach the ground wire to the conduit box. Resistive or single-phase loads must only be connected to lines A and C. This product is designed for indoor use only. Do not use in wet or damp locations. Do not mount on equipment with excessive vibration. The red indicator light should only come on when the motor is starting, and should go out once the motor has reached operating speed.

The light should never stay on longer than seconds since the converter could be damaged if it stays on longer. When testing the converter for the first few times after installation, keep your hand near the off switch of the machine, ready to turn it off, to prevent damage to the converter due to a wrong or loose connection. To easily locate these two wires, connect V single-phase power to any 2 of the 3 wires on the machine, and press the start button.

When the correct combination is found the magnetics will work. Connect these two wires to the outside terminals of the converter, lines A and C, and the third wire to the center terminal, line B. The magnetics should still work with the center terminal line B disconnected. The horsepower of the first motor to start, or Idler Motor if used, must fall within the minimum and maximum HP range on the converter. However, after the first motor, or Idler Motor, has started, motors below the minimum range may then be started and can usually be left running as the main motor is stopped and started.

Always start a machine out of gear or in lowest spindle speed at initial hook-up to reduce load. On a lower horsepower motor the light could stay on after the motor is running, which would cause rapid failure of the converter, thus providing protection against possible motor damage. A blown fuse still leaves two lines to conduct which can damage the converter. Magnetic starters are preferred. If fuses are used, they should be placed on the single-phase lines L1 and L2.

Heavily loaded applications, such as compressors, blowers, water pumps, hydraulic pumps, etc. Power may be left on the converter without the load applied. Current draw is approximately 8mA. The converter operates best when mounted vertically with the conduit box on top.

Installation should be performed by a qualified electrician. Refer to local codes for proper wire sizing. Likes: 1 Post 1. Results 1 to 15 of Thread: 1 to 3 phase problem. Thread Tools Show Printable Version. Both machines start and run fine. I just wired my series one Bridgeport to the same panel and when I start the Bridgeport it draws a high load and the motor is louder than expected, sort of a groaning humming sound.

Once the motor is up to speed it quiets down. Any ideas what might be wrong. Thanks, Steve. You don't have a Pony motor, a Pony motor is a single phase motor used to start a 3 phase motor to be used as a RPC. The static converter you use to start the 3 phase motor is it still connected after the 3 phase motor started?

Originally Posted by stevet. The electrical setup I have in my shop is as follows. Aryan liked this post. A 3HP converter idler should run and start a 1 HP motor.

The pancake motors are a bit odd, and may draw more current than expected at start. Some regular motors are also "pigs" to start. Yes, another 3 phase motor also running no load can act as an auxiliary idler. Thanks thermite and JST. I've never had a problem starting B'port pancake motors. Our Autogen is a capacitor-start, capacitor-run device. Even though ours is the best on the market, no static converter will produce the quality of power that our Rotary converters provide.

A motor operated at or near full-load continuously on any static converter will run hot and burn up. A rotary converter, however will allow continuous full-load motor operation. If economics keeps you from buying a rotary phase converter, an idle 3-phase motor may be operated with the Autogen to increase power with little additional electrical cost.