A-B Rockwell 825-MCM20 Bulletin 825 Converter Module

DESCRIPTION

The 825-MCM20 is a currency converter module from Allen-Bradley.

It is part of the 825-P Motor Modular Protection System and is rated for 690 VAC (IEC) and 600 VAC (CSA/UL).

It has an inrush rating of 6 kV, an operating current range of 2.5-20 amps, a continuous thermal current of 24 amps, 

a saturation current rating of 240 amps, and a frequency rating of 50/60 Hz ± 3 Hz.

The converter has a PTC thermistor input and supports six (6) sensors in series.

About the 825-MCM20

The 825-MCM20 is Allen-Bradley's currency converter module. It is part of the Bulletin 825-P Motor Protection System.

The device is designed primarily to protect industrial three-phase motors, providing thermal overload, 

PTC (positive temperature coefficient) overheat, undercurrent (load loss), current unbalance, and phase loss,

overcurrent (load jamming), short circuit, ground fault (residual), ground fault (zero sequence), 

frequency and other protective functions, as well as motor start/run and other motor start and run protection functions, such as a variety of motor start and run protection.

Protection prohibition at start, start motor timer, notch or pointing device, TCU (thermal capacity utilization) start prohibition, anti-reverse rotation timer, emergency start,

two-speed protection, reduced voltage start (star-delta) and stall switch.

The 825-MCM20 module is specifically designed for use in a variety of line starter applications,

especially low and medium voltage with 2 or 3 potential transformers, with or without phase current transformers,

with or without zero sequence core balancing current transformers, with or without external RTD module, reversing starters, star delta starters and two speed motors.

The 825-MCM20 operates in accordance with IEC and CSA/UL standards, specifically 690 VAC (IEC) and 600 VAC (CSA/UL), and is rated for 6 kV impact strength.

It has an operating current range of 2.5-20 amps with a continuous thermal current of 24 amps and a saturation current of 240 amps.

The module's operating frequency range is 50/60 Hz ± 3 Hz. The module provides five (5) discrete inputs; one (1) C-type input; and one (1) C-type input.

The module provides five (5) discrete inputs; one (1) Type C, one (1) Type A, and release contact outputs as well as PTC thermistor inputs for up to six (6) PTC sensors in series.

The Allen-Bradley 825-MCM20 825-M is a current converter device for use with the Allen-Bradley 825 Modular Motor Protection System.

It is specifically designed to protect and manage three-phase industrial motors by monitoring motor current, line voltage, and temperature.

The 825-MCM20 has an operating (working) CSA/UL rating of 600V AC, an IEC rating of 690V AC, and a rated frequency range of 50-60 Hz +/- 3 Hz.

The converter has a functional current range of 2.5A to 20A with a continuous thermal current of 24A and a saturation current of 240A.

It has a converter impulse strength rating of 6kV and a frequency range of 50-60 Hz +/- 3Hz.

The 825-MCM20 has a functional temperature limit of -20 to +60 degrees Celsius (-4 to +140 degrees Fahrenheit) and an ambient non-condensing relative humidity level of 5% to 95%.

The non-operating temperature is limited to -40 to +85 degrees Celsius (-40 to +185 degrees Fahrenheit).

It can operate at altitudes up to 2000 meters without derating and comes with an IP65/IP20 rated enclosure.

It has a maximum operating shock tolerance of 3G for 18ms time duration and resists 3G maximum vibration at frequencies from 10 to 150Hz.

The current converter module weighs approximately 570g and has net dimensions of 120mm x 85mm x 102mm.

Technical Description of the 825-MCM20

The Allen-Bradley 825-MCM20 module is a Bulletin 825 converter module designed to protect three-phase industrial motors.

It supports a current range of 2.5 to 20 amps and is rated at 24 amps continuous thermal current.

The 825-MCM20 converter module is designed to be connected to phase current inputs. It supports an operating frequency range of 50 to 60 Hz.

The 825-MCM20 converter module is protected by an environmentally friendly enclosure rated up to IP 66.

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