MODEL PF3 SERIES
POWER CONTROLS
 
Three-Phase (6 SCR) Phase-Fired Models
Rated 60-1200 Amperes
 

The PF3 Series are three-phase (6 SCR), phase-fired SCR Power Controls designed to deliver maximum power control with all the features normally found in much larger units. Utilizing only four frame sizes, these units are conservatively engineered for years of trouble-free service while providing the benefits of precise, reliable control for your electrical process.

The PF3 Series accepts all standard voltage and current command signals or a remote potentiometer input. The 4-20 mA command signal is optically isolated. Standard operating voltages are 120, 240, 400, 480 & 575 Vac, 3 Phase, 50/60 Hz. Other voltages are available.

Multi-turn zero and span adjustments are provided for matching the SCR power control to the command signal. Control power, command signal and blown fuse indicators are provided as a means for trouble shooting. The control power indicator (red) indicates power has been applied to the unit. The command signal indicator's (green) brilliance is proportional to the output voltage. The blown fuse indicators (3-yellow) light if a fuse is cleared.

 

Click here to download a PDF brochure

 

    
• Electrically Isolated Heat Sink (60-225A)
• Compact Size
• Conservative Thermal Design
• Voltage Squared Linearity
• Line Voltage Compensation
• Transient Voltage Protection (RC & MOV)
• 1400 PIV SCRs
• Semiconductor (I2t) Fuse
• Diagnostic Indicators
• Optically Isolated Input Command Signal (4-20 mA)
• Multi-Turn Zero & Span Adjustments
• Silkscreened Printed Circuit Boards
• UL, cUL Listed, CE Compliant
• 5 year "No Hassle" warranty
• Fan Cooled (90A and higher)
• DC Output Available

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Primarily used to control dynamic resistive or transformer coupled loads.
• High temperature furnaces
• Large ovens, kilns & heaters
• IR Heating

   

 

      

 

 

  

 

 

 
Specifications
   

Control Method: Phase-firing of six back-to-back SCRs (3 leg control)
Voltage Rating: 120, 240, 400, 480, 575 Vac, 50/60 Hz
Current Ratings: 60, 90, 120, 180, 225, 350, 500, 650, 800, 1000, 1200 Amperes
Command Signal: Most standard process signals
Isolation: 2500 volts rms from power circuit to command signal and to ground

Adjustments: Zero and span, multi-turn
Ambient Temperature: Operating: 0º to 50ºC
Storage: 10º to 70ºC Relative Humidity: 0 to 95% (non-condensing)
Weights:
60 - 225A 40 lbs.
350 - 500A 60 lbs.
650A 126 lbs.
800 - 1200A 231 lbs.


 

 

  
Dimensions
   
Click on the illustration for a larger view
60-225A 350 thru 500A
650A 800 thru 1200A

 
       
   
3563 Interchange Rd.
Columbus, OH 43204

 Tel: (614) 308-5500
Fax: (614) 308-5506

 Toll Free: (888) 797-2685
Email: info@hdrpower.com