Part Winding Start


Series MP420 - Combined Manual and Automatic
 

Metron Fire Pump Controllers conform to the latest requirements of National Fire Protection Association's Standard for Centrifugal Fire Pumps, as adopted by Underwriters Laboratories and Factory Mutual. They are withstand rated and listed by Underwriters' Laboratories and approved by Factory Mutual Research Corporation.

Sizes range from 15 to 700 horsepower, 200 to 600 volts, 60 Hz. These controllers are for use on Across-the-Line type installations.

Only the highest quality components, all UL listed or UL recognized are used throughout to assure the best possible reliability. The cabinet is fabricated of heavy gauge reinforced steel with drip-proof hood. All field wiring and service connections may be made from the front, allowing the controller to be mounted flush against a wall.

The controller is completely wired, assembled, and tested at the factory before shipment, and ready for immediate installation.

The series MP420 fire pump controllers can be used when full voltage starting may not be desired or practical. The starting contactors operate in sequence to energize a portion of the motor windings on start which reduces inrush current to approximately 65% of normal. An adjustable timing relay is provided to control time between reduced current start and normal running operation. An emergency start lever to close starting contactor independent of automatic control circuits is also supplied as standard. When used, this lever will bypass the reduced current start feature and start the motor with full inrush current drawn from the power source.

 

Outline and Hookup Drawings:

 


 

Without Transfer Switch

With Transfer Switch

Voltage

HP Range

Outline

Hookup

Outline

Hookup

200

15-60

CD33984D

CH33694D

CD33991F

CH34012F

75-125

CD33774C

CH34275C

CD33808D

CH33710F

150

CD34519A

CH34275C

CD34520A

CH33710F

200-250

CD33790C

CH33759D

CD35002

CH33727

300

CD35007

CH33759D CD35012  CH33727

208

15-75

CD33984D

CH33694D

CD33991F

CH34012F

100-150

CD33774C

CH34275C

CD33808D

CH33710F

200-250

CD33790C

CH33759D

CD35002

 CH33727

300

CD35007

CH33759D CD35012  CH33727

220-240

15-75

CD33984D

CH33694D

CD33991F

CH34012F

100-150

CD33774C

CH34275C

CD33808D

CH33710F

200

CD34519A

CH34275C

CD34520A

CH33710F

250

CD33790C

CH33759D

CD35002 

 CH33727

300

CD35007 

CH33759D CD35012  CH33727

380-415

15-125

CD33984D

CH33694D

CD33991F

CH34012F

150-250

CD33774C

CH34275C

CD33808D

CH33710F

300

CD34519A

CH34275C

CD34520A

CH33710F

350-400

CD33790C

CH33759D

CD35002 

 CH33727

500-600

CD35007

CH33759D CD35012  CH33727

440-480

15-150

CD33984D

CH33694D

CD33991F

CH34012F

200-300

CD33774C

CH34275C

CD33808D

CH33710F

350-400

CD34519A

CH34275C

CD34520A

CH33710F

500

CD33790C

CH33759D

CD35002

 CH33727

600

CD35007

CH33759D CD35012   CH33727

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

 
Drawings are provided in ADOBE pdf Format and are provided for reference only. Drawings and Specifications subject to change without notice. Drawings should not be used for construction. Contact our sales department for specific as-built drawings for your special project.