The M-2278 is an adapter panel which, when combined with the M-2001 Series Digital Tapchanger Control, provides convenient direct replacement for Allis-Chalmers surface-mount LTC transformer controls. The M-2278 is designed to mount against a flat surface using four screws and includes a front door hinge for easy replacement of the control panel.

• Connects easily to the M-2001 Series Digital Tapchanger Control using mounting screws and 24-pin connector
• Provides direct mechanical replacement of Allis-Chalmers surface-mount LTC transformer controls
• Provides built-in CT shorting protection when the M-2001 Series Digital Tapchanger Control is removed

Interface
External connections are made to a terminal block located on the top of the rear panel of the M-2278. Additional connections may be made to two terminal blocks located on the printed circuit board of the adapter panel. These terminal blocks provides access to auxiliary functions, including self-test alarm, user-programmable alarm, auto disable and manual raise/lower.

Features
Separate fuses for test terminal, voltage sensing and motor power are on the front panel. Spare fuses for each are in the fuse holder. Binding posts on the front panel allow easy connections for test procedures. RAISE/OFF/LOWER, AUTO/OFF/MANUAL and VOLTAGE SOURCE switches, DRAG HANDS RESET button, and NEUTRAL LIGHT are standard. NEUTRAL LIGHT will light to indicate that the regulator is in the neutral position for those products equipped with a circuit for this purpose.

Sales and Service

For sales and service information contact your local representative or contact the factory:

E-mail: sales@beckwithelectric.com
Call (727) 544-2326 or Fax (727) 546-0121