Cedarberg Standard Duty Rotary Type Phase Converters

Rotary Phase Converter – Continuous 3 Phase Power to 220 Volt 3 Phase Motors from 220 Volt Single Phase Current

Cedarberg Rotary Phase Converters permit operation of three phase motors on single phase current. Cedarberg Rotary Phase Converters are used where three phase current is not available and the cost to bring three phase power if prohibitive.

• Correctly sized and properly installed a Cedarberg Rotary Phase Converter should provide years of trouble free service.
• Cedarberg Rotary Phase Converters are designed to start any motor from fractional horsepower up to the nameplate rating.
• Cedarberg Rotary Phase Converters come ready for installation. Electrical installation hardware are not provided with the Rotary Phase Converters.
• Instant reversal motors present no problem to the Rotary Phase Converter.

Your selection must be based on the horsepower of the largest motor to be operated. Smaller motors may be started while the motor within the converters range remains running.

Application:

Cedarberg Rotary Phase Converters are designed to start any motor from fractional horsepower up to the nameplate rating. If the motor on the equipment is larger than the phase converters nameplate rating, a phase converter of the correct size will need to be purchased. Do not attempt to start a motor that is too large for the converter or damage could occur.

Features:

Instant reversal motors present no problems to these converters. For Series 1B and Series 3 converter installations, we recommend that frequent reversing not be done for extended periods of time. Our Series 1B and Series 3 units will start more than one machine, as long as each motor is within the horsepower range of the converter. When multiple three phase motors are on the same circuit and not within the range of the converter, the following steps must be taken:

• A) Start the largest motor first. (This motor must be within the converters range.)
• B) While allowing this motor to idle, additional, smaller motors may be started one at a time.
• C) The motor that is within the range of the Series 3 converter must remain running throughout the duty cycle of the smaller motors. With the Series 1B converter, the motor that is within the range of the converter may be turned off once the smaller motor is running and up to speed.
• D) Rotary Phase Converters are capable of starting any motor from fractional horsepower up to their nameplate rating. They are designed to run total horsepower loads up to three times the nameplate rating on Heavy Duty models and up to two times the nameplate rating on Standard Duty models.

Two-speed electric motors can be operated without difficulty, provided both speed ranges lie within the converters horsepower range. Some foreign and special motors require less starting current and therefore may require a static converter one size smaller than normal.

Your selection must be based on the largest horsepower motor to be operated. This converter is designed to operate total horsepower loads up to 2 times the nameplate rating.

Designed for light starting & running loads (such as drill presses, mills, grinders, etc) where generated 3 phase power is preferred.

The largest horsepower motor you intend to start should not exceed our converter’s nameplate rating. Our converters are designed to run horsepower loads up to 3 times the nameplate rating.

Designed for medium to heavy starting & running loads (such as gear head lathes, flywheel & hydraulic applications, CNC machinery, etc.) when maximum motor efficiency is required.

View the Metal & Woodworking Application Compatibility Guide

View the Miscellaneous Machinery Application Compatibility Guide

View the Phase Converter Catalog