Power Supply

MicroLogic Active Power Supplies

The MicroLogic Active control unit is powered by the current through the internal current transformers (CT).

• The standard protection functions of MicroLogic Active control units operate with the internal current supply.

• If the load current is higher than 20% of the rated current In, the internal current supply provides the power supply for the full functioning of the MicroLogic Active control unit.

To provide a power supply to the MicroLogic Active control unit when the load is below 20% of the rated current In, and maintain the full functioning of the MicroLogic Active control unit, optional external power supplies can be used.

WARNING

hazard of 24 Vdc system not compliant with selv requirement Supply MicroLogic Active control units with 24 Vdc non-SELV (Safety Extra Low Voltage), paying attention to polarity. Do not connect MicroLogic Active control units to a 24 Vdc -SELV system as the MicroLogic Active control unit is not providing double or reinforced insulation from the main circuit. For example, do not use the non-SELV 24 Vdc power supply of a MicroLogic Active control unit to supply a MicroLogic X control unit or an SELV communication module. Failure to follow these instructions can result in death, serious injury, or equipment damage.

External power supplies include the following:

• Permanent power supplies: external 24 Vdc non-SELV (Safety Extra Low Voltage) power supply.

• Temporary power supplies connected to the USB-C port of the MicroLogic Active control unit:

  • External Mobile Power Pack through USB connection.

  • Android smartphone through USB OTG connection.

  • PC through USB connection.

Each external MicroLogic Active power supply is described further.

BCIM Power Supply

WARNING

HAZARD OF 24 VDC SYSTEM NOT COMPLIANT WITH SELV REQUIREMENT Supply the ULP port module or ULP module with a 24 Vdc SELV (Safety Extra Low Voltage) power supply, paying attention to polarity. Do not use the same power supply to supply the MicroLogic Active control unit and the ULP port module or the ULP module supplying the BCIM module. Failure to follow these instructions can result in death, serious injury, or equipment damage.

The BCIM module is supplied by the 24 Vdc SELV (Safety Extra Low Voltage) power supply of the ULP port module or ULP module connected to the COM terminal block (for example IFE or IFM interface), depending on the architecture. This power supply must be independent of the MicroLogic Active control unit power supply.

For more information, refer to DOCA0387•• Breaker Communication and Isolation Module (BCIM) for MicroLogic Active Control Unit - User Guide.

Recommendations for External Power Supplies

Recommendations for the use of external 24 Vdc power supplies:

• The same 24 Vdc power supply can be used to supply several MicroLogic Active control units, depending on the overall power requirements of the system.

• Use a separate 24 Vdc power supply to supply the MN/MX/XF voltage releases or the MCH gear motor.

• Do not use the same 24 Vdc power supply to supply power to the MicroLogic Active control unit and the BCIM module.

Recommended 24 Vdc Power Supplies

For information about recommended 24 Vdc power supplies, refer to the MasterPacT MTZ with MicroLogic Active Control Unit - Catalog.

Mobile Power Pack

The Mobile Power Pack is an external battery that enables power to be supplied temporarily to the MicroLogic Active control unit.

The Mobile Power Pack enables use of the MicroLogic Active display screen and keypad for setting and displaying when the power supply to the MicroLogic Active control unit is interrupted.

The external Mobile Power Pack can be connected by using a USB cable (RS PRO, reference 182-8848) connected to the USB-C port on the MicroLogic Active control unit.

Check the charge level of the Mobile Power Pack by pressing the test button for one second. The indicator on the Mobile Power Pack lights up to indicate the remaining charge.

Internal Battery

When no other power supply is supplying the MicroLogic Active control unit, the internal battery powers the:

• Trip cause LEDs

• Status bar

• Internal clock (date and time)

• Maintenance schedule function

The internal battery is protected by a strip. Remember to remove the battery strip before operation. For information about the removal of the battery strip, consult the instruction sheets for MasterPacT MTZ circuit breakers in Related Documents.

Power Consumption

The following table lists the power consumption of the MicroLogic Active control unit and BCIM module: