Mechanism NII_Z_1: Operate the Device Manually and Electrically - MTZ Basic Standard Maintenance Procedures

Safety Instructions

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized. Check that the device and the chassis are de-energized on the upstream and downstream terminals. Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized. Install safety barriers and display a danger sign. During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied. Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position). Before turning on power to this equipment, put all devices, doors, and covers back in place. Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
This equipment must only be installed and serviced by qualified electrical personnel.
Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
Check that the device and the chassis are de-energized on the upstream and downstream terminals.
Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
Install safety barriers and display a danger sign.
During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position).
Before turning on power to this equipment, put all devices, doors, and covers back in place.
Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.

Failure to follow these instructions will result in death or serious injury.

Procedure Definition

Procedure characteristics	Description
Action	Check the operation of: Charging mechanism using the spring charging handle. Device opening and closing mechanism by using: The pushbuttons. The XF/MX/MN voltage releases. EcoStruxure Power Commission software when communicating voltage releases are installed. The position indicators. The CDM operation counter, if present.
Goal	Verify that the device can be opened/closed manually and electrically.
Frequency	Refer to Recommended Frequency for the Routine End-User Maintenance Program.
Special indications	Connect the XF/MX/MN voltage releases to the power supply.
Necessary tools	Adjustable external power supply Voltmeter LV847074SP terminal block A PC running EcoStruxure Power Commission software A USB cable (standard to mini USB port)
Related documents	MasterPacT MTZ1 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide MasterPacT MTZ2/MTZ3 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide MasterPacT MTZ1 - CDM Operation Counter - Instruction Sheet MasterPacT MTZ2/MTZ3 - CDM Operation Counter - Instruction Sheet MasterPacT MTZ1/MTZ2/MTZ3 - MN-MX-XF Voltage Releases - Instruction Sheet MasterPacT MTZ1/MTZ2/MTZ3 - MN-MX-XF Communicating Voltage Releases with Diagnostic Function - Instruction Sheet MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet

Preliminary Conditions

The device must comply with the conditions specified below. Refer to the MasterPacT MTZ User Guides to find instructions for operating the device.

Device installation type	Position of poles	Mechanism	Device position in the chassis
Fixed	Open	Discharged	N/A
Drawout	Open	Discharged	Test

Checking Manual Opening/Closing of the Device

Step	Action	Corrective action
1	For fixed devices equipped with the MCH gear motor, disconnect the auxiliary circuit for the MCH gear motor (terminals B1 and B2).
2	Manually charge the mechanism by pulling the spring charging handle down six times. When the spring charging handle no longer resists, the mechanism is charged.
3	Press the closing pushbutton to close the device. The device closes.	If the device does not close, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.
4	Check that the indicators show that the device is closed, and the mechanism is discharged.	If the indicators show different information, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.
5	Check that the CDM operation counter increments.	If the CDM operation counter does not increment, check it is correctly installed (refer to MasterPacT MTZ - CDM Operation Counter - Instruction Sheet). If the CDM operation counter does not increment and is correctly installed, replace it.
6	Charge the mechanism again. Check that the indicators show that the device is closed, and the mechanism is charged and not ready-to-close.	If the indicators show different information, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.
7	Press the opening pushbutton to open the device. The device opens.	If the device does not open, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.
8	Check that the indicators show that the device is open, and the mechanism is charged and ready-to-close.	If the indicators show different information, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.

Checking Electrical Closing with the XF Closing Voltage Release

DANGER
HAZARD OF ELECTRIC SHOCK When using the adjustable external power supply, take all suitable measures to protect against electric shock. Failure to follow these instructions will result in death or serious injury.

Step	Action	Corrective action
1	Reconnect the auxiliary circuit for the MCH gear motor (terminals B1 and B2).
2	Press the external pushbutton to close the device. The device closes.	If the device does not close, it can be due to external conditions. Refer to troubleshooting in the appendix. If the external conditions are correct: For a fixed device: replace the XF closing voltage release (refer to MasterPacT MTZ - MN-MX-XF Voltage Releases - Instruction Sheet) and do the procedure again. For a drawout device, check that the XF closing voltage release operates correctly as follows: 1. Put the device in the withdrawn position. 2. Insert a replacement LV847074SP terminal block in the appropriate location on the device. 3. Connect the XF closing voltage release to the adjustable external power supply set to Un. If the device closes, replace the auxiliary terminal block (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position. If the device does not close, replace the XF closing voltage release (refer to MasterPacT MTZ - MN-MX-XF Voltage Releases - Instruction Sheet) and do the procedure again. Refer to the MasterPacT MTZ with MicroLogic X Control Unit - Catalog for spare parts. If the problem persists, contact your Schneider Electric Services representative.
3	Check that the indicators show that the device is closed and check the mechanism status: Without MCH gear motor, the mechanism is discharged. With MCH gear motor, the mechanism is charged.	If the indicators show different information, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.
4	Check that the CDM operation counter increments.	If the CDM operation counter does not increment, check it is correctly installed (refer to MasterPacT MTZ - CDM Operation Counter - Instruction Sheet). If the CDM operation counter is correctly installed, replace it.

Checking Electrical Opening with the MX Opening Voltage Release

DANGER
HAZARD OF ELECTRIC SHOCK When using the adjustable external power supply, take all suitable measures to protect against electric shock. Failure to follow these instructions will result in death or serious injury.

Execute the following procedure for MX1 then MX2, if connected.

Step

Action

Corrective action

1

For drawout devices, check that the device is in the test position.

2

Press the external pushbutton to open the device.

The device opens.

If the device does not open, it can be due to external conditions. Refer to troubleshooting in the appendix.

If the external conditions are correct:

For a fixed device: replace the MX opening voltage release (refer to MasterPacT MTZ - MN-MX-XF Voltage Releases - Instruction Sheet) and do the procedure again.
For a drawout device, check that the MX closing voltage release operates correctly as follows:

1. Put the device in the withdrawn position.

2. Insert an LV847074SP terminal block in the appropriate location on the device.

3. Connect the MX opening voltage release to the adjustable external power supply set to Un.
- If the device opens, replace the auxiliary terminal block (refer to MasterPacT MTZ1/MTZ2/MTZ3 - Auxiliary Terminals - Instruction Sheet) and do the procedure again with the device in the test position.
- If the device does not open, replace the MX opening voltage release and do the procedure again with the device in the test position.

Refer to the MasterPacT MTZ with MicroLogic X Control Unit - Catalog for spare parts.

If the problem persists, contact your Schneider Electric Services representative.

3

Check that the indicators show that the device is open and check the mechanism status:

Without MCH gear motor, the mechanism is discharged.
With MCH gear motor, the mechanism is charged.

If the indicators show different information, refer to troubleshooting in the appendix.

If the problem persists, contact your Schneider Electric Services representative.

Checking Electrical Opening with the MN Undervoltage Release

Step	Action	Corrective action
1	For drawout devices, check that the device is in the test position.
2	Without MCH gear motor: manually charge the mechanism by pulling the spring charging handle down six times. When the spring charging handle no longer resists, the mechanism is charged. With MCH gear motor: the mechanism is automatically charged.
3	Press the external pushbutton to close the device. The device closes.	If the device does not close, check the MN undervoltage release wiring and power supply, and refer to troubleshooting in the appendix.
4	For fixed devices: Remove the fixed auxiliary terminal block. Then, the device opens. For drawout devices: Rack-out the device to the disconnected position. Then, the device opens.	If the device does not open, replace the MN undervoltage release (refer to MasterPacT MTZ - MN-MX-XF Voltage Releases - Instruction Sheet). Refer to the MasterPacT MTZ with MicroLogic X Control Unit - Catalog for spare parts. If the problem persists, contact your Schneider Electric Services representative.
5	Check that the indicators show that the device is open and check the mechanism status: Without MCH gear motor, the mechanism is discharged. With MCH gear motor, the mechanism is charged and not ready-to-close.	If the indicators show different information, refer to troubleshooting in the appendix. If the problem persists, contact your Schneider Electric Services representative.

Checking Opening/Closing of the Device in a Communication Network

If XF/MX communicating voltage releases are installed in the device, do the following procedure to test the close and open controls of the device by using EcoStruxure Power Commission software.

Step	Action	Corrective action
1	Connect a PC running EcoStruxure Power Commission software to the MicroLogic X control unit. A Cable plug connected to the mini USB port of MicroLogic X control unit B Standard to mini USB port cable C PC running EcoStruxure Power Commission software
2	Launch EcoStruxure Power Commission software.
3	Click Connect Device Directly. Result: A window displays to indicate that the device discovery is in progress. It disappears automatically when the device is discovered.
4	Click NEXT to close the Project Information window.
5	Click SAVE to close the Customer Details window and display the SWITCHBOARD VIEW.
6	Click the Connect to device button.
7	In the Device Check up section, click the Device tab.
8	Click CLOSE to close the device.
9	Read carefully the safety message that displays then click Accept.
10	You are prompted to provide the password: Type the Administrator password of the MicroLogic X control unit. Click OK.
11	A message displays when the close operation of the device has completed successfully. Click OK.	If the device does not close, refer to troubleshooting in the appendix.
12	In Device Status data, check that Breaker position is Close.	If the device status is not correct, contact your Schneider Electric Services representative.
13	In the SWITCHBOARD VIEW window, click OPEN to open the device.
14	Read carefully the safety message that displays then click Accept.
15	You are prompted to provide the password: Type the Administrator password of the MicroLogic X control unit. Click OK.
16	A message displays when the open operation of the device has completed successfully. Click OK.	If the device does not open, refer to troubleshooting in the appendix.
17	In Device Status data, check that Breaker position is Open.	If the device status is not correct, contact your Schneider Electric Services representative.
18	Click the Disconnect button to disconnect the device from EcoStruxure Power Commission software.
19	Exit EcoStruxure Power Commission software.