AC-PRO-MP-II® Masterpact Direct Replacement Trip Unit

Standard trip functions include:

(These will vary depending on the STR type selected)

• Long-Time
• Short-Time
• Instantaneous
• Residual Ground Fault
• Ground Return Ground Fault
• Instantaneous on Closing
• Over Temperature Trip

All of the settings are protected by a security code to prevent unauthorized modifications.

Additional Functions:

Sluggish Breaker Detection

The AC-PRO-MP & AC-PRO-MP-II now have the ability to detect if the Masterpact breaker mechanism needs service. The first time a breaker opens after a long period of inactivity it may open slowly. This can be caused by mechanical issues, poor lubricant or other obstructions.
The AC-PRO-MP & AC-PRO-MP-II will capture the sluggish breaker event and display a warning on the screen the next time it is powered up. An external alarm can also be activated when the
AC-PRO-MP & AC-PRO-MP-II detect a sluggish breaker event.

When the breaker has detected a sluggish opening it will show this alert the next time the AC-PRO-MP & AC-PRO-MP-II is turned on.	After the initial warning you can view the actual clearing time.

USB Port

The front mounted and electrically isolated USB port allows for easy downloading of trip data and protection settings. It can also be used to upload the trip unit settings, making commissioning the trip unit much faster. The USB port can also be used with the SAFE-T-TRIP system.

InfoPro-MP Software Compatable

InfoPro-MP is a software application that can be used with AC-PRO-MP units that shipped prior to December 2016. It offers the following capabilities:

• Settings – upload, download, view, and save
• Trip unit info: serial number, firmware versions, breaker name
• Firmware updates

InfoPro-MP-II software is for MP & MP II units that shipped in December 2016 or later (these units can easily be identified by their front test port). In addition to the above features, InfoPro-MP-II includes the following:

• Waveform capture (on-demand and for the last 8 trips)
• Current readings
• Voltage, power, & energy readings (AC-PRO-MP-II only)

Programming

The AC-PRO-MP & AC-PRO-MP-II can be programmed one of two ways.  The front of the unit has an OLED display that is easy to read in either low or high ambient light.  The buttons on the front of the unit are “smart” buttons that change their functions based on the displayed information.  The second way to program the AC-PRO-MP & AC-PRO-MP-II is using the USB port on the front to connect to the InfoPro-MP software application, which is supplied by URC. The program makes it very easy to commission the AC-PRO-MP & AC-PRO-MP-II.  InfoPro-MP can also be used to view historical data, upgrade the firmware, save the commissioning data and reload the AC-PRO-MP from a saved file.

SAFE-T-TRIP^®

The AC-PRO-MP & AC-PRO-MP-II are also compatible with Utility Relay Company’s SAFE-T-TRIP which provides a means for an operator to safely trip a breaker without having to stand directly in front of the switchgear.

The AC-PRO-MP & AC-PRO-MP-II have a mechanical pop out trip indicator on the front of the unit that mimics the functionality of the original unit.  There is also a SELF-TEST OK Led, PRE-TRIP LED, QUICK-TRIP switch and an easily accessible LI-Ion battery. The SELF-TEST OK LED indicates a properly operating trip unit. The PRE-TRIP LED indicates a pending trip.  The QUICK-TRIP switch activates QT-Instantaneous and QT-Ground Fault settings in the trip unit to reduce arc flash hazard.