Tests - MasterPact MTZ2/3 User Guide

Overview

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

Functional checks
Check of MCH gear motor (if fitted)
Check of M2C programmable contacts and IO module (if fitted)
Check of ESM ERMS switch module (if fitted)
Check of electrical continuity
Check of high-voltage insulation
Check of MicroLogic X Ready LED status
Test of the tripping mechanism with EcoStruxure Power Commission software
Test of the tripping mechanism with the test button (MicroLogic 6.0 X or 7.0 X control units)
Automatic trip curve test with EcoStruxure Power Commission software

Only do the tests required, depending on the MasterPacT MTZ type and the functions in use, and record the results on the test form. In the event of non-conformance, the result must be recorded and the MasterPacT MTZ device must not be accepted into service.

Functional Checks

Follow this procedure to check the operation of the MasterPacT MTZ device 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 closing of the device in each of the different control modes and means designed for the application.
3	Open the device. Check the opening of the device in each of the different control modes and means designed for the application.

If the device does not close or does not open, refer to Troubleshooting.

Check of MCH Gear Motor (if Fitted)

Follow this procedure to check the operation of the MCH gear motor and record the results on the test form.

Step	Action
1	Remove the MCH gear motor 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 MCH gear motor 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 of M2C Programmable Contacts and IO Module (if Fitted)

Follow this procedure to check the operation of inputs and outputs, and record the results on the test form.

Step	Action
1	Connect a PC running EcoStruxure Power Commission 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 of ESM ERMS Switch Module (if Fitted)

Follow this procedure to 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 3 s that the MicroLogic X control unit returns to its original state.

Check of Electrical Continuity

Follow this procedure to 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 of the phases, between the upper and lower power terminals: For fixed device: on the power terminals For the drawout device: on the chassis power terminals, with the device in the connected position

Step

Action

1

Close the device.

2

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

For fixed device: on the power terminals
For the drawout device: on the chassis power terminals, with the device in the connected position

Check of High-Voltage Insulation

Dielectric tests (high potential and insulation resistance tests) are used to check the insulation between phases, and insulation 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 with 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 the instruction sheet on the Schneider Electric website: NVE40741.

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.

Follow this procedure to 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 MasterPacT MTZ 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 your Schneider Electric Services representative.

Check of MicroLogic X Internal Battery

Follow this procedure to check the functioning of the MicroLogic X internal battery.

Step	Action
1	Press and hold the Test/Reset button for less than 3 seconds to test the internal battery.
2	Check that the four trip cause LEDs switch off for one second, and then switch on for two seconds. If the four trip cause LEDs: Flash sequentially for two seconds: the battery is near the end of its life. Replace the battery. For information about internal battery replacement and installation, consult the instruction sheet on the Schneider Electric website: NHA57283. Do not light: check that the battery strip has been removed. If it has, replace the battery. If the battery strip has not been removed, remove it as indicated in the circuit breaker instruction sheet. Refer to Related Documents at the beginning of this guide.

Step

Action

1

Press and hold the Test/Reset button for less than 3 seconds to test the internal battery.

2

Check that the four trip cause LEDs switch off for one second, and then switch on for two seconds.

If the four trip cause LEDs:

Flash sequentially for two seconds: the battery is near the end of its life. Replace the battery.

For information about internal battery replacement and installation, consult the instruction sheet on the Schneider Electric website: NHA57283.
Do not light: check that the battery strip has been removed. If it has, replace the battery.

If the battery strip has not been removed, remove it as indicated in the circuit breaker instruction sheet. Refer to Related Documents at the beginning of this guide.

Check of MicroLogic X Ready LED Status

Follow this procedure to 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 part Critical Cases.

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 part Critical Cases.

Test of the Tripping Mechanism With EcoStruxure Power Commission Software

Follow this procedure to test the tripping mechanism of the circuit breaker and record the results on the test form.

Step	Action
1	Close the circuit breaker.
2	Connect a PC running EcoStruxure Power Commission software by using a cable to the mini USB port on the front face of the MicroLogic X control unit.
3	On EcoStruxure Power Commission software, select the circuit breaker and connect to it.
4	Force the circuit breaker to trip by clicking the Force Trip button on the EcoStruxure Power Commission 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 of the Tripping Mechanism with the Test Button (MicroLogic 6.0 X and 7.0 X Control Units)

Follow this procedure to test the tripping mechanism of the circuit breaker when fitted with a MicroLogic 6.0 X or 7.0 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.

Automatic Trip Curve Test With EcoStruxure Power Commission Software

Follow this procedure to run the automatic trip curve test and record the results on the test form.

Step	Action
1	Close the circuit breaker.
2	If the device is equipped with an MN undervoltage release, either connect it to the power supply with its rated voltage or remove the MN undervoltage release.
3	Connect a PC running EcoStruxure Power Commission software by using a cable to the mini USB port on the front face of the MicroLogic X control unit.
4	On EcoStruxure Power Commission software, select the circuit breaker and connect to it.
5	In the Device Check up section, click the Device tab.
6	Select the Automatic Trip Test section.
7	Select Preconfigured test point.
8	Select the overcurrent protection to be tested.
9	Click Run Test.
10	Check that the circuit breaker trips.
11	Check that the blue fault-trip reset button has popped out
12	Check that the related trip cause LED is lit.
13	Check the SDE contacts have switched.
14	After the test, reset the circuit breaker.