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: 11.80″ high x 7.87″

wide x 4.18″ deep max depth (29.97 cm x 19.98 cm x 10.62 cm)

Approximate Weight: 4 lbs, 2 oz (1.9 kg)

Approximate Shipping Weight: 7 lbs, 6 oz (3.37 kg)

Approximate Weight with M‑2001 Series Digital Tapchanger Control: 8 lbs,

7 oz (3.85 kg)

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

11 lbs, 11 oz (5.33 kg)

Patent & Warranty

The M-2220 adapter panel is covered by a five year warranty from date of

shipment.

Specification is subject to change without notice.

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.

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 to one terminal block, located within the

M‑2220 enclosure.

Features

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

provided.

AUTO/OFF/MANUAL switch. Auto/Off/Manual switch status detection is

available.

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.

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.

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.

Options

SCADA CUTOUT switch allows Local blocking of SCADA commands (for use

with SCADA enabled M‑2001C controls). The SCADA Cutout switch must

be used with a M-2001 Series Control with firmware version D‑0146V08.01.22

or later installed.

SCAMPTM (SCADA Controllable Auto/Manual Pushbutton) switch allows the

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

The SCAMP pushbutton switch must be used with a M‑2001 Series Control

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

Voltage Reduction switch allows 2 levels of Voltage Reduction to be selected.