Martin Phase Converters, Inc.

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Static Phase Converters

Static Phase ConverterThe Converter is made in two systems. The Standard and The Special Duty. The purpose of these devices is to operate 3 phase motors on 1 phase current.

It has become increasingly difficult to obtain 3 phase service for 1 or 2 motors. Our product solves this problem. Our simple, trouble free Converter fills this need.

OPERATES ANY STANDARD 9 OR 12 LEAD MOTOR ON 1 PHASE CURRENT.

THE STANDARD (Model S): this system is unique in that it may be used with any type 3 phase motor. It may be either Wye or Delta connected, salient or consequent polarity. It is made in either 230 or 460 volts. It connects to a standard 9 lead motor with no alteration to the motor. It will produce approximately 90% full H.P., and will usually produce 250% lock torque (1800 RPM motor). The lock torque has never been any problem at all as long as the starting voltage drop is minimal. This system is very satisfactory for most applications. Many of these systems are operating pumping units, injection pumps, air compressors and other oil field and rural applications.

THE SPECIAL DUTY (Model SD): the essential difference between Model S and the Model SD is that the oil filled (permanent) capacitance is much greater in the Model SD. Some applications (For Example: Close coupled centrifugal pumps or some sealed air or refrigeration compressors) need as near full H.P. as possible. The higher in line capacitance lowers the input current to the motor and allows the motor to be loaded somewhat greater without overloading the motor windings.

THE KR CONNECTIONS: This connection is for those motors that bring out all 12 leads. The KR system will produce slightly better starting and running torque than the 9 lead motor. It can be used with both the Model S and the Model SD converters. It will not apply on the 230 volt Delta connected motor, but will operate well on the 460 volt Delta connected motor and also on 230 and 460 volts Wye connected motors.

THE STANDARD SYSTEM PERFORMS EXCEEDINGLY WELL ON 230 VOLT DELTA CONNECTED MOTORS WHERE THE SPECIAL DUTY WILL NOT APPLY. THE CONVERTER, BOTH THE STANDARD AND THE SPECIAL DUTY, ARE MANUFACTURED IN TWO STRUCTURAL TYPES, THE PANEL MOUNT AND THE REMOTE MOUNT.

PANEL MOUNT:
This unit is manufactured to mount inside all wide case combination and magnetic starter panels. (Pumping Unit Panel) This allows the complete control to be in one unit, or the converter may be purchased separately to install in the customers panel.
  REMOTE MOUNT:
This unit is manufactured to mount separate from the other control equipment. The enclosure is a rain tight box, metal and corrosion resistant. It has mounting brackets suitable for flat surface or pole mounting.
Panel Mount Phase Converter Remote Mount Phase Converter

THE PATENTED PRIMARY RELAY RELIEF SYSTEM: The greatest improvement of the Converter, as compared to other converters, is in our primary capacitor relief system. The circuit is very sensitive to adjustment and may be adjusted to extreme voltage variation. It will not flutter or drop out with voltage changes. The motor can be overloaded to stalling and the relay circuit will still maintain. This means that the electrolytic capacitors will not return to the circuit and will not be damaged even if the motor is stalled. In fact the relay circuit will not deactivate no matter how low the voltage drops. The motor must be shut down and started again to bring the electrolytic capacitors back on. The motor and converter both receive protection. The motor will not attempt to start again after stall, but revert to cut off by the motor OL system. On the other hand if the motor is overloaded, but not to the point of stall, the capacitors will still not return to the circuit, but will lock out and not be damaged. The motor will again revert to cut off by its OL system.

Low voltage and overload conditions have always been very troublesome to other types of static converters.

WE BELIEVE WE HAVE DESIGNED A STATIC CONVERTER THAT IS AS NEAR TROUBLE FREE AS THIS EQUIPMENT CAN BE MADE, WE GUARANTEE IT.

Static Phase Converter Applications:

  • Oil Field Pumping Units
  • Compressors

  • Machine Tools

  • Pumps

  • Fans and Other Oilfield and Rural Applications

  • Restaurant Equipment