Interface

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

panel of the M‑2279D, and at two terminal blocks located on the printed

circuit board. These terminal blocks provide access to auxiliary functions,

including self-test alarm, user-programmable alarm, auto disable and manual

raise/lower. A fifth terminal block provides for the addition of the M‑0329B

LTC Backup Control. The four mounting studs, front door brace and the front

door locking knob must be saved from the existing control cabinet.

Features

Separate fuses for test terminal, voltage sensing and motor power are located

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 regulators equipped with a circuit for this purpose.

The M‑2279D also includes an Input Voltage Circuit Breaker and Backup Alarm

Indicator.

Features

Fuse for voltage sensing is on the front panel. A spare fuse is provided within

the fuse housing.

AUTO/OFF/MANUAL switch.

Environmental

Temperature Range: Functionality is maintained from ‑40° to +85° C.

Humidity: Functionality is maintained under 95% relative humidity (non‑condensing).

Fungus Resistance: A conformal printed circuit board coating inhibits fungal growth.

Physical

Size with M‑2001 Series Digital Tapchanger Control: 10‑25/32″ high by 7‑1/2″

wide by 3‑3/8″ deep (27.4 cm x 19.1 cm x 8.6 cm); requires a Reinhausen MK30

enclosure

Approximate Weight: 2 lbs, 8 oz (1.14 kg)

Approximate Shipping Weight: 5 lbs, 8 oz (2.50 kg)

Approximate Weight with M‑2001 Series Digital Tapchanger Control: 6 lbs, 13 oz

(3.09 kg)

Approximate Shipping Weight with M‑2001 Series Digital Tapchanger Control:

11 lbs, 8 oz (5.22 kg)

Patent & Warranty

The M-2230 Adapter Panel is covered by a five-year warranty from date of shipment.

Adapts M‑2001 Series Digital Tapchanger Control to replace Reinhausen

MK30 Control

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

four mounting screws and a 24‑pin connector

• Provides direct mechanical and electrical replacement of the Reinhausen

MK30 Control

• Uses existing MK30 enclosure

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

Tapchanger Control is removed

The M‑2230 Adapter Panel combines with the M‑2001 Series Digital 

Tapchanger Control to provide convenient, direct mechanical replacement

for the Reinhausen MK30 control in the existing enclosure.

M‑2230 Differences Relative to the MK30 – Revised connections will be

needed if paralleling transformers using the circulating current method with

the Reinhausen SKB5 or SKB‑20 Parallel Control Units. (Please contact

Beckwith Electric Company for further information.)

If paralleling transformers using the SKB‑30 Electronic Parallel Control, then

the M‑2230 cannot be used.

The M‑2230 provides one normally open contact for the Raise and Lower

outputs. The MK30 normally closed contacts for Raise and Lower are not

provided on the M‑2230. The Adapter Panel provides one status contact

that may be programmed to close when the control is blocking for

overcurrent, overvoltage, or undervoltage.

Interface

External connections are made to one terminal block, located on a separate

(provided) bracket which mounts within the existing enclosure.

The Beckwith Electric M-2051/M-2502 Connection Harness, used in

conjunction with the M-2001 Series Digital Tapchanger Control, uses

modern electronic digital design and digital processing circuitry to

achieve an overall stability and resolution unattainable with 

electromechanical and analog design tapchanger controls. CMOS

semiconductors are used throughout the design. Standard Features

The M-2051/M-2502 Connection Harness, with the M-2001 Series Digital

Tapchanger Control, provides a solid-state voltage control relay intended

for applications involving the control of tapchanging transformers and

regulators.

CONNECTION HARNESS M-2067 W/O PANEL

Features

• Voltage waveform sampling and digital processing circuitry ensure

accurate rms voltage sensing in the presence of distortion on the input

voltage and current.

• Accuracy exceeds the ANSI/IEEE C57.15-1986 Class 1 specification over

the temperature range of -40° to + 80° Celsius.

• Input and output circuits are protected against system transients. Units

pass all requirements of ANSI/IEEE C37.90.1 1989. which defines surge

withstand capability. All input and output terminals will withstand 1500 V

ac 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.

• A voltage sensing fuse and a spare fuse are provided.

• The M-2051/M-2052 is a general purpose connection harness that is

designed to be mounted on a panel.

Application LTC Transformer Controls

Dimensions

Weight  .5 lb.

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.

Environmental

Temperature Range: Functionality is maintained from ‑40° to +85° C.

Humidity: Functionality is maintained under 95% relative humidity (non‑condensing).

Physical

Size with M‑2001 Series Digital Tapchanger Control: Overall dimensions are 8.60″

high x 5.80″ wide x 3.38″ deep (21.8 cm x 14.73 cm x 8.6 cm); requires a panel

cutout of 4″ x 4″ (10.2 cm x 10.2 cm)

Approximate Weight: 2 lbs (0.91 kg)

Approximate Shipping Weight: 5 lbs (2.27 kg)

Approximate Weight with M‑2001 Series Digital Tapchanger Control: 5 lbs, 11 oz

(2.58 kg)

Approximate Shipping Weight with M‑2001 Series Digital Tapchanger Control: 10 lbs,

11 oz (4.85 kg)

Warranty

The M-2053 Adapter Panel is covered by a five year warranty from date of shipment.

Options

SCADA Cutout switch allows the local blocking of SCADA commands (for use with

SCADA enabled M‑2001C controls). Use of the SCADA Cutout Switch with the

M-2001C, requires a M-2001C Control with firmware version D‑0146V08.01.22

or later installed.

SCAMP™ (SCADA Controlled AUTO/MANUAL Pushbutton) switch allows the Auto/

Manual state on the adapter panel to be changed by a SCADA command.

Use of the SCAMP pushbutton with the M‑2001C, requires a M-2001C Control with

firmware version D-0146V08.05.XX or later installed.

Voltage Reduction (VR1/OFF/VR2) switch allows Local Voltage Reduction 1 or 2 to

be initiated.

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.

Interface

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

panel of the M‑2279D, and at two terminal blocks located on the printed

circuit board. These terminal blocks provide access to auxiliary functions,

including self-test alarm, user-programmable alarm, auto disable and manual

raise/lower. A fifth terminal block provides for the addition of the M‑0329B

LTC Backup Control. The four mounting studs, front door brace and the front

door locking knob must be saved from the existing control cabinet.

Features

Separate fuses for test terminal, voltage sensing and motor power are located

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 regulators equipped with a circuit for this purpose.

The M‑2279D also includes an Input Voltage Circuit Breaker and Backup Alarm

Indicator.

Adapts M‑2001 Series Digital Tapchanger Control to Replace Pennsylvania

Transformer and McGraw‑Edison LTC Transformer and Regulator Controls

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

mounting screws and 24‑pin connector

• Provides direct mechanical replacement of the old LTC transformer or

regulator control using the same four mounting studs, front door brace

and locking knob

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

Tapchanger Control is removed

• Optional SCADA Cutout switch (for use with SCADA enabled M‑2001C

controls) allows local blocking of SCADA commands

• Optional SCAMP™ (SCADA Controlled Auto/Manual Pushbutton) switch

replaces AUTO/OFF/MANUAL toggle switch and allows the Auto/Manual

state of the adapter panel to be changed by a SCADA command

• Optional Voltage Reduction switch allows Local Voltage Reduction

1 or 2 to be initiated provides convenient direct replacement for the

following Pennsylvania Transformer and McGraw‑Edison LTC transformer

and regulator controls manufactured from 1963–1978: 550. 550A, 550B,

550C, 396B, 494B, 496B, 995 and 996.

Adapts M‑2001 Series Digital Tapchanger Control for Surface Mounting

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.

Interface

External connections are made to a terminal block located on the rear of

the adapter panel.