Adapts M‑2001 Series Digital Tapchanger Control to Replace Siemens UJ‑3T, SJ‑4T, SJ‑5T, SJ‑6T,
IJ‑2T, IJ‑2AT, MJ‑3T and MJ‑3AT Controls
• Connects easily to the M‑2001 Digital Tapchanger Series Control using mounting screws
and 24-pin connector
• Provides direct mechanical Replacement of the original panel
• Provides built-in CT shorting protection when the M-2001 Digital Tapchanger Series
Control is removed
• Optional SCADA Cutout switch
• Optional 2 Level Local

Voltage Reduction Switch
The M‑2339 is an adapter panel which, when combined with the M‑2001 Series Digital Tapchanger Control,
provides convenient direct replacement for Siemens UJ‑3T, SJ‑4T, SJ‑5T, SJ‑6T, IJ‑2T, IJ‑2AT, MJ‑3T and
MJ-3AT LTC Transformer Control Panels. The M‑2339 mounts against a flat surface and includes a hinged
The front panel.
The M‑2339 includes the M‑2067 Adapter Panel with a voltage fuse and two terminal blocks on the rear
for additional external connections, and an M‑0169A Auxiliary Current Transformer (5 A or 8.66 A to 0.2 A)
mounted on the rear panel.
Interface
External connections are made to a terminal block located on the M‑2339's rear panel. Additional terminal
block located on the M‑2067 Adapter Panel provides access to auxiliary functions, including self‑test alarm,
user-programmable alarm, manual raise/lower, and access to the digital operations counter.
Features
A shorting link for the line current output, a fuse for motor power, and a voltmeter testing terminal are included.
A DRAG-HANDS RESET button, LOWER/OFF/RAISE switch; and AUTO/MANUAL switches are also standard.
Options
SCADA CUTOUT switch allows Local blocking of SCADA commands (for use with SCADA enabled
M-2001C controls). Use of the SCADA Cutout switch requires an M‑2001 Series Control with firmware version
D‑0146V08.01.22 or later installed.
The 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.
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 fungus growth.
Physical
Size:
Size: 20‑5/8" high x 9‑5/8" wide x 5‑1/2" deep (52.4 cm x 24.5 cm x 14.0 cm)
Approximate Weight: 5 lbs (2.27 kg)
Approximate Shipping Weight: 8 lbs (3.63 kg)
Approximate Weight with M-2001 Series Digital Tapchanger Control:
Approximate Weight with M-2001 Series Digital Tapchanger Control: 9 lbs, 5 oz (4.22 kg)
Approximate Shipping Weight with M-2001 Series Digital Tapchanger Control:
Approximate Shipping Weight with M-2001 Series Digital Tapchanger Control: 11 lbs (5 kg)
Warranty
The M‑2339 Adapter Panel is covered by a five year warranty from date of shipment.
Specifications subject to change without notice.
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