Beckwith Electric M-2025D Current Loop Interface Module

The M‑2067B is an adapter panel which, when combined with the M‑2001

Series Digital Tapchanger Control, provides convenient direct replacement

for Westinghouse SVC and SVR controls and Beckwith Electric M‑0067

series controls. The M‑2067B can also be used, with the M‑2001 Series

Tapchanger Control, as a general purpose LTC transformer control.

The M‑2067B permits changing of the M‑2001 control without adapter

panel removal or rewiring.

Adapts M‑2001 Series Digital Tapchanger Control to Replace Westinghouse

SVC and SVR Controls and Beckwith Electric M‑0067 Tapchanger Controls,

or as a General Purpose LTC Transformer Control

• Connects easily to the M‑2001 Series Digital Tapchanger Control using

four mounting screws and 24‑pin connector

• Provides mounting adaptable to several different configurations

• Provides built‑in CT shorting protection when the M‑2001 Series

Tapchanger Control is removed

Interface

External connections are made to two terminal blocks located on the rear

of the adapter panel. The second terminal block provides auxiliary functions,

including self‑test alarm, user‑programmable alarm, manual raise/ lower,

operations counter and ∆VAr 2 disable.

Testing Specifications

High Voltage: All input and output terminals will withstand 1500 Vac rms to

chassis or instrument ground for one minute with a leakage current not to

exceed 25 mA, for all terminals to ground. Input and output circuits are

electrically isolated from each other, from other circuits and from ground.

Surge Withstand Capability: All input and output circuits are protected against

system transients. Units pass all requirements of ANSI/IEEE C.37.90.1-1989

defining surge withstand capability.

Radiated Electromagnetic Withstand Capability: All units are protected against

electromagnetic radiated interference from portable communications transceivers

as outlined in ANSI/IEEE C37.90.2-1987 defining radiated electromagnetic 

withstand capability.

• M-2948 Tap Position Sensor directly mechanically replaces the Selsyn-Type Tap

Position Sensor.

• Directly interfaces with a 4 to 20 mA output to the M-2025D Current Loop Interface

which provides the tap position to the M-2001 Series Tapchanger Control.

• Rotation – 0 to 210°, 297°, 306°, 315°, 325°, 330°, 340° and 350° configurations

• Degrees per Tap – 9° or 10°

• Neutrals – 1, 2, 3, 5 or 6

• Rotation Direction – Tap Position Sensors are available with either a positive

or negative rotation. With positive rotation, the shaft of the M-2948 rotates

clockwise while raising taps. With negative rotation, the shaft of the

M-2948 rotates counter-clockwise while raising taps.

The M‑2069 Adapter Panel, when combined with the M‑2001C or M-2001D

Digital Tapchanger Control, offers convenient, direct replacement of

Westinghouse SVC or SVR controls and Beckwith Electric M‑0067E controls

or M-2067B adapter panels.

The M‑2069-M-2001D combination can also be used as a general purpose

LTC transformer control.

Applications

• Connects easily to the M‑2001Series Digital Tapchanger Control using

four mounting screws and 24‑pin connector

• Provides mounting adaptable to several different configurations

• Provides built‑in CT shorting protection when the M‑2001 Series Digital

Tapchanger Control is removed

The M‑2053 is an adapter panel which permits M‑2001 Series Digital

Tapchanger Controls to be surface‑mounted while providing access points

for wire terminations.