Drawout MasterPacT MTZ2/MTZ3 Device Status

Drawout Device Handling Conditions

Connection or disconnection of the drawout device requires insertion of the racking handle. When interlocks, padlocks, or an open door lock are in place, the racking handle cannot be inserted.

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E or CSA Z462 or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Failure to follow these instructions will result in death or serious injury.

Drawout Device Positions

The indicator located on the front of the chassis locally signals the position of the device in the chassis.

Device position	Connector position	Device status
Connected	Disconnecting contact clusters: engaged Control: engaged	Can be operated. Ready for service.
Test	Disconnecting contact clusters: disengaged - the minimum distance between the device racking terminals and the chassis clusters is reached. Control: engaged	Can be operated. Can have operation and control systems tested.
Disconnected	Disconnecting contact clusters: disengaged Control: disengaged	Can be operated. Can be removed from chassis.
Withdrawn	Disconnecting contact clusters: disengaged Control: disengaged	Removed from chassis.

Drawout Device Position Contacts

The position of the device in the chassis is indicated remotely by the following position contacts:

CE: connected position.
CT: test position.
CD: disconnected position.

The state of the position contacts changes according to the device position during racking-in and racking-out operations, as shown in the diagram below.

A Device in connected position

B Separation of the main circuits

C Device in test position

D Separation of auxiliary circuits

E Device in disconnected position

Position contact is open

Position contact is closed

Drawout Device Position Contacts Without EIFE Ethernet Interface

Without EIFE Ethernet interface, the standard configuration of the position contacts is the following:

3 CD disconnected position contacts
3 CE connected position contacts
3 CT test position contacts

The following optional configurations are available:

6 CE + 3 CT
3 CD + 6 CE
6 CD + 3 CE
9 CE

Drawout Device Position Contacts With EIFE Ethernet Interface

With EIFE Ethernet interface, the standard configuration of the position contacts is the following:

3 CD disconnected position contacts
3 CE connected position contacts

The following optional configurations are available:

3 CE + 3 CT
3 CD + 3 CT
6 CE

Chassis Management Function

The chassis management function is used to:

Record and check the position of the moving part of the drawout device in the chassis
Provide information about preventive maintenance actions
Notify the remote controller about the position of the drawout device

The chassis management function is performed by:

The EIFE Ethernet interface, refer to DOCA0106•• Enerlin'X EIFE - Embedded Ethernet Interface for One MasterPacT MTZ Drawout Circuit Breaker - User Guide.
The IO module, refer to DOCA0055•• Enerlin'X IO - Input/Output Application Module for One Circuit Breaker - User Guide.