0614IB1701

Masterpact MTZ2/MTZ3 Tests

The tests to do while commissioning an MTZ device are described in this section:

  • Functional checks

  • Check spring charging motor (MCH) (if fitted)

  • Check M2C programmable contacts and IO module (if fitted)

  • Check electrical continuity

  • Check high-voltage insulation

  • Check Micrologic X Ready LED status

  • Test the tripping mechanism with Ecoreach software

  • Test the tripping mechanism with the test button (Micrologic 6.0 X control units only)

Do only the tests required, depending on the Masterpact MTZ type and the functions in use, and record the results on the test form (see Masterpact MTZ Test Form). In the event of non-conformance, record the result (for future reference) and DO NOT place the Masterpact MTZ device into service.

Masterpact MTZ Devices Functional Checks

Check the Masterpact MTZ device operation and record the results on the test form.

Step

Action

1

Manually charge the mechanism by pulling the spring charging handle down.

2

Close the device. Check the device closing in the different control modes and means designed for the application.

3

Open the device. Check the device opening in the different control modes and means designed for the application.

Masterpact MTZ Devices Check of Spring Charging Motor (MCH) (If Installed)

Check the spring charging motor (MCH) operation and record the results on the test form.

Step

Action

1

Remove the spring charging motor (MCH) power supply.

2

Do an opening/closing/opening cycle to discharge the mechanism.

3

With the device in the open position and the mechanism discharged, check electrical continuity between terminals B1 and B2, and electrical non-continuity between terminals B1 and B3.

4

Manually charge the mechanism.

5

Reconnect the spring charging motor (MCH) power supply. The device closes and the mechanism is automatically charged.

6

Check electrical continuity between terminals B1 and B3.

7

Operate the device several times to check that the spring mechanism automatically recharges after every closing operation.

Check Masterpact MTZ Devices M2C Programmable Contact and IO Module (If Installed)

Check the operation of inputs and outputs, and record the results on the test form.

Step

Action

1

Connect a PC running Ecoreach software by using a cable to the mini USB port on the front face of the Micrologic X control unit.

2

Force the state of both inputs of the M2C programmable contacts and check that the operation is correct.

3

Force the state of the six digital inputs and three outputs of the one or two IO modules in the IMU to check the wiring to the circuit breaker. Check that the operation is correct.

Check ESM ERMS Switch Module (If Installed)

Check the operation of the ESM ERMS switch module, and record the results on the test form.

Step

Action

1

Make sure that the Micrologic X control unit is powered permanently with a 24 Vdc power supply.

2

Connect the ESM ERMS switch module to an external switch with a 24 Vdc or 24–120 Vac power supply.

3

Activate the ERMS function by moving the external switch to the Engage position. Check that:

  • The ERMS LED on the front face of the Micrologic X control unit lights blue.

  • The Micrologic X control unit display screen is lit with a blue backlight.

  • The message ERMS Engaged is displayed on the Micrologic X control unit display screen.

4

Disengage the ERMS function by moving the external switch to the Disengage position, and check after three seconds that the Micrologic X control unit returns to its original state.

Check Masterpact MTZ Devices Electrical Continuity

Check electrical continuity using a multimeter or continuity checker and record the results on the test form.

Step

Action

1

Close the device.

2

Check electrical continuity, for each phase, between the upper and lower power terminals:

  • For a fixed device: on the power terminals.

  • For a drawout device: on the cradle power terminals, with the device in the connected position.

Check Masterpact MTZ Devices High-Voltage Insulation

Dielectric tests (high potential and insulation resistance tests) are used to check the insulation between phases and between each phase and ground. The equipment used to conduct these tests creates a high potential voltage (thousands of volts) to check dielectric or insulation integrity.

If included in the Micrologic X control unit, the voltage power supply (VPS) module connects and disconnects the control unit from the voltage connections in the circuit breaker.

Before conducting any high-voltage insulation tests, move the VPS module to the disconnected position and unplug any cables from the mini USB port on the front face of the Micrologic X control unit. For information on VPS disconnection, consult instruction sheet NVE40741 on the Schneider Electric website.

CAUTION
DETERIORATION OF VPS MODULE
Disconnect the VPS module by pulling it out to the disconnected position before running a dielectric test on the equipment.
Failure to follow these instructions can result in injury or equipment damage.

Check insulation resistance and record the results on the test form.

Step

Action

1

Disconnect the VPS module and unplug any cables from the mini USB port on the front face of the Micrologic X control unit.

2

Close the device.

3

Measure the insulation resistance using a 500 Vdc insulation resistance tester between one of the phases and the other two phases grounded. Repeat for each phase.

4

Open the Masterpact MTZ device by pressing the opening pushbutton.

5

Measure the insulation resistance using a 500 Vdc insulation resistance tester between one of the phases and ground, with all other phases grounded. Repeat for each phase.

6

Check that the insulation resistance is above 5 MΩ in each case. If this result is not obtained, contact a Schneider Electric field service representative.

Check Micrologic X Control Unit Ready LED Status

Check the functioning of the Micrologic X control unit and record the results on the test form.

Step

Action

1

Provide power to the Micrologic X control unit, for example, by connecting a PC or Mobile Power Pack to the mini USB port on the front face.

2

Check that the Micrologic X Ready LED is flashing green.

The Ready LED flashes green to indicate that:

  • The sensors are correctly wired.

  • The tripping mechanism is functioning correctly.

  • The Micrologic X control unit is functioning correctly.

3

If the Ready LED is not flashing green, refer to chapter Critical Cases (see Masterpact MTZ Critical Cases).

Test the Tripping Function with EcoReach Software

Test the Masterpact MTZ tripping mechanism and record the results on the test form.

Step

Action

1

Close the circuit breaker.

2

Connect a PC running Ecoreach software by using a cable to the mini USB port on the front face of the Micrologic X control unit.

3

On Ecoreach software, select the circuit breaker and connect to it.

4

Force the circuit breaker to trip by clicking the Force Trip button on the Ecoreach screen. This action is password-protected.

5

Check that the circuit breaker is open.

6

Check that the blue fault-trip reset button has popped out.

7

Check that the Isd/Ii LED is on.

8

Check that the SDE contacts have switched.

9

After the test, reset the circuit breaker.

Test the Tripping Mechanism with the Test Button (Micrologic 6.0X Control Units)

Test the Masterpact MTZ tripping mechanism when fitted with a Micrologic 6.0 X control unit, and record the results on the test form.

Step

Action

1

Close the circuit breaker.

2

Use a thin screwdriver to briefly push in (<1 s) the test button on the control unit.

3

Check that the circuit breaker is open.

4

Check that the blue fault-trip reset button has popped out.

5

Check that the Ig/IΔn LED is on.

6

Check that the SDE contacts have switched.

7

After the test, reset the circuit breaker.

Masterpact MTZ2/MTZ3 Communication Tests

Communication Network Test with Ecoreach Software

Use Ecoreach software to test the communication network between all the communicating devices of the project:

  • Devices connected to the Ethernet network through an IFE or EIFE Ethernet interface.

  • Devices connected to a Modbus serial line network through an IFM Modbus SL (RTU) interface stacked through at Ethernet server.

  • Devices connected to a Modbus serial line network from an IFM Modbus SL (RTU) interface.

Step

Action

1

Connect a PC running Ecoreach software by using an RJ45 cable to the Ethernet network, on the IFE or EIFE Ethernet interface, or IFM interface, for example.

2

In Ecoreach software, at Create report → Communication test & report, select devices to be tested from the list of communicating devices defined in the project.

3

Click Run test. All selected devices are tested.

4

Results are displayed at the end of the test.

5

Generate the communication test report with Ecoreach software, and save or print the project report as needed.

Masterpact MTZ Devices Remote Control Tests

If the Masterpact MTZ device can be opened and closed remotely through the communication network, use the following tests to check for the correct operation of remote control:

Step

Action

1

Connect a PC running Ecoreach software by using an RJ45 cable to the Ethernet network, on the IFE or EIFE Ethernet interface for example.

2

Check that the control mode is set to Auto: Remote.

3

In Ecoreach software, select the circuit breaker and connect to it.

4

Click the Device tab to access the Open and Close buttons.

5

Check that it is possible to open and close the Masterpact MTZ device remotely. These actions are password-protected.

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