825-MCM20

The 825-MCM20 is a currency converter module by Allen-Bradley. This is part of the bulletin 825-P Motor protection systems. This device is primarily used to protect industrial three-phase motors, providing protective features such as Thermal Overload, PTC (positive temperature coefficient) Overtemperature, Undercurrent (Load Loss), Current Imbalance and Phase Loss, Overcurrent (Load Jam), Short Circuit, Ground Fault (Residual), Ground Fault (Zero Sequence), Frequency and a variety of Motor starting and running protection features such as Motor Starting/Running, Protection Inhibit During Start, Start Motor Timer, Notching or Jogging Device, TCU (Thermal Capacity Utilization) Start Inhibit, Anti-Backspin Timer, Emergency Start, Two Speed Protection, Reduced Voltage Starting (Star-Delta) and Stall-Speed Switch. The 825-MCM20 module is specifically designed incompatibility with a variety of line starter applications particularly Low and medium voltage with 2 or 3 potential transformers, With or without phase current transformers, With or without zero-sequence core balance current transformer, with or without external RTD module, Reversing starter, Star-delta starting and Two-speed motors. The 825-MCM20 has an operating voltage that complies with both IEC and CSA/UL standards specifically, 690 VAC (IEC) and 600 VAC (CSA/UL) with rated impulse strength of 6 kV. It has an operating current range of 2.5-20 Amperes along with a continuous thermal current of 24 Amperes, saturation current of 240 Amperes. This module has an operating frequency range of 50/60 Hz ± 3 Hz. This module is supplied with Five (5) discrete inputs; One (1) Form C, One (1) Form A and Trip contact outputs, and PTC thermistor input where up to Six (6) PTC sensors can be connected in series.

The Allen-Bradley 825-MCM20 825-M is a current converter device that is used with the Allen-Bradley 825 Modular Motor Protection System. It is specifically designed for the protection and management of 3-phase industrial motors by monitoring the motor current, line voltage, and temperature. The 825-MCM20 has a working (operational) CSA/UL rated voltage of 600V AC, and an IEC rated voltage of 690V AC at a 50-60 Hz +/- 3 Hz rated frequency range. 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-rated impulse strength of 6kV, also at a 50-60 Hz +/- 3Hz frequency range. The 825-MCM20 has a functional temperature limit between -20 and +60 Deg. C (-4 and +140 Deg. F), at a 5 to 95% ambient non-condensing relative humidity level, and it is designed with non-operational temperature limits of -40 to +85 Deg. C (-40 to +185 Deg. F). It can function without de-rating at an altitude as high as 2000m and it comes with an IP65/IP20 rated enclosure. It has a maximum operating shock withstand of 30G for a time duration of 18ms, and it will resist a maximum vibration of 3G at a frequency of 10 to 150Hz. The current converter module weighs about 570g, and it has net dimensions that measure 120mm x 85mm x 102mm.