Replaces Westinghouse Type SJS Transformer Control Panel
• Replaces Westinghouse Type SJS voltage regulating relay
and thermal time delay relay
• Wiring harness quickly connects to existing terminal block
• Fully transient-protected
• Will operate properly over a temperature range from –40°
to +80° C
The M‑2356B is an adapter panel which, when combined with the M‑2001 Series Digital
Tapchanger Control, provides convenient direct replacement for General Electric ML‑32
balance beam regulator controls. The M‑2356B consists of a front panel and two wiring
harnesses with octal plugs which mount into the control cabinet. All mount ing hardware
from the faceplate and socket housing of the original control must be saved, including:
the two wing nuts, the two thumbscrews and C‑clips, and two nuts, washers and bolts.
Interface
External connections are made via two wiring harnesses with octal plugs that mount
through the octal sockets onthe existing control cabinet. Most connections come from
a fifteen‑position terminal block on the printed circuitboard and a four‑position terminal
block to the octal plugs. An additional terminal block (TB2) on the printed circuit board
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.
Options
SCADA CUTOUT switch allows Local blocking of SCADA commands (for use with SCADA enabled M‑2001
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.
SCAMPTM (SCADA Controllable 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 switch with the M‑2001C,
requires a M-2001C Control with firmware version D-0146V08.05.XX or later installed.
Voltage Reduction switch allows 2 levels of Voltage Reduction to be selected.
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.
The M-2356B is an adapter panel which, when combined with the M-2001 Series
Digital Tapchanger Control, provides convenient direct replacement for General
Electric ML-32 balance beam regulator controls. The M-2356B consists of a front
panel and two wiring harnesses with octal plugs which mount into the control
cabinet. All mounting hardware from the faceplate and socket housing of the
original control must be saved , including: the two wing nuts, the two thumbscrews
and C-clips, and two nuts, washers and bolts.
• Connects easily to the M-2001 Series Digital Tapchanger Control using mounting
screws and 24-pin connector
• Fits directly into existing regulator control cabinet using the same mounting
hardware from the faceplate and socket housing of the original control
• Provides built-in CT shorting protection when the M-2001 Series Digital Tapchanger
Control is removed
The M‑2355B is an adapter panel which, when combined with the M‑2001 Series
Digital Tapchanger Control, provides convenient direct replacement for Cooper
(formerly McGraw‑Edison).
• For use with single phase regulator controls: CL-1. CL-2. CL-2A, CL-4A, CL-4B,
CL-4C, CL-5. CL-6. CL-7
• The M‑2355B consists of a front door panel with hinge leaves on the right side.
It mounts into the control cabinet using the same two hinge pins, which must be
saved from the original control.
• Connects easily to the M‑2001 Series Digital Tapchanger Control using mounting
screws and 24‑pin connector
• Fits directly into existing regulator control cabinet using the same two hinge pins
• Provides built‑in CT shorting protection when the M‑2001 Series Digital Tapchanger
Control is removed
• Optional SCADA Cutout (LOCAL/REMOTE) switch (for use with SCADA enabled
M‑2001C controls) allows Local Blocking of SCADA commands
• Optional SCAMP™ (SCADA Controllable AUTO/MANUAL Pushbutton) switch replaces
AUTO/OFF/MANUAL toggle switch
• Optional 2 level Local Voltage Reduction switch
Features
Separate fuses for test terminal, voltage sensing and motor power are on the
front panel, and 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 are
standard.
The Allis-Chalmers regulator with which the UJ-1 control was used does not
provide for a neutral tap position light, a tap position drag-hands reset, or a
tapchanger operations counter. These functions are not active on the M-2347
Adapter Panel. Also the lack of the operation counter circuit in the regulator
prevents the use of the tap position function of the M-2001.
The M-2347 is an adapter panel which, when combined with the M-2001
Series Digital Tapchanger Control, provides convenient direct replacement
for Allis-Chalmers UJ-1 regulator controls. The M-2347 consists of a front
panel, supplemental printed circuit board, 24-pin extension cable and 6-pin
extension wire harness. Mounting of the front panel and supplemental
printed circuit board onto the control panel frame requires hole drilling
following the instructions provided with the M-2347.
• Connects easily to the M-2001 Series Digital Tapchanger Control using
mounting screws and 24-pin connector
• Provides mechanical replacement of the old regulator control using the
same control panel mounting frame, hardware and seven-position jack plug
• Provides built-in CT shorting protection when the M-2001 Series Digital
Tapchanger Control is removed
The M‑2264B mounts into the control cabinet using the same two thumbscrews
which must be saved from the original control.
Interface
External connections are made via a wiring harness that connects from a fifteen
‑position terminal block to
the terminal block on the existing control cabinet. An additional terminal block
provides access to auxiliary
functions, including self‑test alarm, user‑programmable alarm, auto disable and
manual raise/lower.
Features
Separate fuses for voltage sensing and motor power are on the front panel.
Spare fuses for each are in the fuse holder.
Binding post on the front panel allows easy connections for test procedures.
The M-2264B is an adapter panel which, when combined with the M-2001 Series
Digital Tapchanger Control, provides convenient direct replacement of balance
beam controls for General Electric ML-32 regulators.
The M-2264B mounts into the control cabinet using the same two thumbscrews
which must be saved from the original control.
• Connects easily to the M-2001 Series Digital Tapchanger Control using mounting
screws and 24-pin connector
• Provides direct mechanical replacement of the existing regulator control using
the same two thumbscrews
• Provides built-in CT shorting protection when the M-2001 Series Digital
Tapchanger Control is removed
The M‑2264B is an adapter panel which, when combined with the M‑2001 Series
Digital Tapchanger Control,
provides convenient direct replacement of balance beam controls for General
Electric ML‑32 regulators.
The Beckwith Electric M-2148 Adapter Panel, used in conjunction
with the M-2001 series 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. The M-2148 Adapter Panel, with the M-2001
series Tapchanger Control, provides a solid state voltage control relay
designed to directly replace the General Electric LRT 48 control.
There are several sizes of LRT 48 controls, therefore, verify that the
M-2148 is the correct replacement.
The combination of the Tapchanger Control and Adapter Panel includes
the following features:M-2148-P: Replaces General Electric LRT-48
Controls and includes the M-0115A and M-0127A for paralleling.
(M-0329B is not available)M-2148-B: Replaces General Electric
LRT-48 Controls and includes the M-0329B for LTC Backup Control
Protection.
• Voltage waveform sampling and digital processing circuitry ensure
accurate rms voltage sensing in the presence of distortion on the
input voltage and current.
• Control accuracy is +/-0.3 % when tested in accordance with the
ANSI/IEEE C57.15.9-1999 standard over a temperature range of –30° C
to +65° C. The control accuracy is +/-0.5 % when tested over the full
operational temperature range of –40° C to +85° C.
• 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.