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  • Masterpact MTZ2/MTZ3 Range Description
  • Masterpact MTZ2/MTZ3 Range Convention
  • Masterpact MTZ2/MTZ3 Circuit Breakers
  • Masterpact MTZ2/MTZ3 Switches
  • Masterpact MTZ2/MTZ3 Neutral Position on Four Pole (4P) Devices
  • Fixed Masterpact MTZ2/MTZ3 Description
  • Fixed Masterpact MTZ2/MTZ3 Accessories Description
  • Fixed Masterpact MTZ2/MTZ3 Terminal Block Description
  • Drawout Masterpact MTZ2/MTZ3 Definition
  • Standard Masterpact MTZ Circuit Breaker or Switch Description
  • Masterpact MTZ Circuit Breaker with ArcBlok™ Technology Description
  • Drawout Masterpact MTZ2/MTZ3 Accessories Description
  • Masterpact MTZ2/MTZ3 Cradle Description
  • Masterpact MTZ2/MTZ3 Cradle Accessories Description
  • Masterpact MTZ2/MTZ3 Cradle Terminal Block Description
  • Masterpact MTZ2/MTZ3 Product Identification Label
  • Masterpact MTZ2/MTZ3 Product Checked Label
  • Masterpact MTZ2/MTZ3 Accessory Side Label
  • Masterpact MTZ2/MTZ3 Faceplate Label
  • Masterpact MTZ2/MTZ3 QR Code
  • Control Unit Layout
  • Micrologic X Status LEDs
  • Local HMI Display Screen with Contextual and Dedicated Buttons
  • NFC Communication Zone
  • Bluetooth Activation Button and LED
  • Micrologic X Control Unit Test Button
  • Micrologic X Control Unit Test/Reset Button
  • Micrologic X Control Unit Mini USB Port
  • Micrologic X Control Unit Overload and Trip Cause LEDs
  • Micrologic X Internal Battery
  • Micrologic X VPS Voltage Power Supply Module
  • Micrologic Control Unit QR Code
  • Micrologic X Control Unit Identification Number
  • Micrologic X Control Unit Type
  • Micrologic X Sensor Plug
  • Go2SE Presentation
  • Go2SE Landing Page Description
  • Go2SE Characteristics
  • Go2SE Download Documents
  • Go2SE Download Customer Care App
  • Go2SE Download EcoStruxure Facility Expert App
  • Go2SE Safe Repository
  • Go2SE Download Masterpact MTZ Mobile App
  • Go2SE Purchase Additional Features
  • Masterpact MTZ—Ambient Temperature
  • Masterpact MTZ—Extreme Atmospheric Condition
  • Masterpact MTZ—Industrial Environments
  • Masterpact MTZ—Vibration
  • Masterpact MTZ—Altitude
  • Masterpact MTZ—Electromagnetic Disturbances
  • Masterpact MTZ2/MTZ3 Device Status Indication
  • Masterpact MTZ2/MTZ3 Device Status Description
  • Masterpact MTZ2/MTZ3 Device Auxiliary Switches (OF)
  • Masterpact MTZ2/MTZ3 Anti-Pumping Function
  • Charging the Masterpact MTZ2/MTZ3 Closing Spring
  • Masterpact MTZ Manual Operation with the Spring Charging Handle (MCH)
  • Masterpact MTZ Electrical Operation with a Spring Charging Motor (MCH)
  • Masterpact MTZ Operation According to Control Mode Configuration
  • Masterpact MTZ2/MTZ3 Operation in Manual Mode
  • Masterpact MTZ2/MTZ3 Operation in Auto: Local Mode
  • Masterpact MTZ2/MTZ3 Operation in Auto: Remote Mode
  • Setting the Micrologic X Control Mode
  • Displaying the Micrologic X Control Mode
  • Micrologic X Control Mode Predefined Events
  • Conditions Required to Open
  • Opening the Masterpact MTZ2/MTZ3 Mechanism in All Control Modes
  • Opening the Masterpact MTZ2/MTZ3 Mechanism in Auto Control Mode
  • Conditions Required to Close
  • Closing the Masterpact MTZ2/MTZ3 Mechanism
  • Inhibiting the Masterpact MTZ2/MTZ3 Closing Function
  • Conditions Required to Reset
  • Resetting the Masterpact MTZ2/MTZ3 Mechanism
  • Conditions for Engaging the ERMS Function
  • Energy Reducing Maintenance Setting (ERMS) Function Operating Principles
  • Engaging the ERMS Function
  • Disengaging the Energy Reducing Maintenance Setting (ERMS) Function
  • Masterpact Shunt Close (XF), Shunt Trip (MX) and Undervoltage Release (MN) Accessories
  • Masterpact Shunt Close (XF)
  • Masterpact Shunt Trip (MX)
  • Masterpact Undervoltage Release (MN)
  • Masterpact Communicating Internal Isolation Module
  • Masterpact Electrical Closing Pushbutton (BPFE)
  • Masterpact Ready-to-Close Contact (PF)
  • Masterpact Spring Charging Motor (MCH)
  • Masterpact Electrical Remote Reset (RES)
  • Masterpact ERMS Switch Module (ESM)
  • Masterpact Grounding Kit (KMT)
  • Masterpact Mechanical Operation Counter (CDM)
  • Masterpact ULP Port Module
  • Masterpact Embedded Ethernet Interface (EIFE)
  • Masterpact Ethernet Interface (IFE) for One Circuit Breaker
  • Masterpact Ethernet Switchboard Server (IFE)
  • Masterpact IFM Modbus-SL (RTU) Interface for One Circuit Breaker
  • Masterpact IO Input/Output Application Module
  • Use a Platform Lift for Masterpact MTZ2/MTZ3 Device
  • Lifting a Masterpact MTZ2/MTZ3 Device
  • Lifting a Masterpact MTZ2/MTZ3 Cradle
  • Masterpact MTZ2/MTZ3 Drawout Handling Conditions
  • Masterpact MTZ2/MTZ3 Drawout Positions
  • Masterpact MTZ2/MTZ3 Drawout Position Contacts
  • Masterpact MTZ2/MTZ3 Drawout Position Contact Without EIFE Ethernet Interface
  • Masterpact MTZ2/MTZ3 Drawout Position Contacts with EIFE Ethernet Interface
  • Masterpact MTZ2/MTZ3 Cradle Management Function
  • Racking Out from Connected to Test Position
  • Racking Out from Test to Disconnected Position
  • Racking-In from Disconnected to Test Position
  • Racking In from Test to Connected Position
  • Masterpact MTZ2/MTZ3 Device Removal
  • Lifting the Masterpact MTZ2/MTZ3 Device
  • Masterpact MTZ2/MTZ3 Circuit Breaker Weights
  • Masterpact MTZ2/MTZ3 Optional Cradle Rejection Feature
  • Installing Masterpact MTZ2/MTZ3 Devices in the Cradle
  • Masterpact MTZ2/MTZ3 VBP Pushbutton Locking Accessory
  • Locking the Masterpact MTZ2/MTZ3 Pushbuttons
  • Masterpact MTZ2/MTZ3 VCPO OFF-Position Locking Accessory
  • Locking the Masterpact MTZ2/MTZ3 Device Open with VCPO
  • Unlocking the Masterpact MTZ2/MTZ3 Device Locked with VCPO
  • Masterpact MTZ2/MTZ3 VSPO OFF-Position Locking Accessory
  • Locking the Masterpact MTZ2/MTZ3 Device Open with VSPO
  • Unlocking the Masterpact MTZ2/MTZ3 Locked Open with VSPO
  • Locking a Masterpact MTZ2/MTZ3 Cradle in with VSPO
  • Locking a Masterpact MTZ2/MTZ3 Cradle with Padlocks
  • Unlocking a Padlocked Masterpact MTZ2/MTZ3 Cradle
  • Locking a Masterpact MTZ2/MTZ3 Cradle with Keylocks
  • Unlocking a Keylocked Masterpact MTZ2/MTZ3 Cradle
  • Masterpact MTZ2/MTZ3 Cradle Locking with VSPD Keylock Accessory
  • Converting the Masterpact MTZ2/MTZ3 Cradle for Keylocking
  • Locking the Mastepact MTZ Shutters with Shutter Position Indication and Locking Accessory
  • Masterpact MTZ2/MTZ3 Cradle Rejection
  • Masterpact MTZ2/MTZ3 Cradle Rejection Pin Locations
  • Masterpact MTZ2/MTZ3 Cradle Rejection Recommended Pin Combinations
  • VPEC Door Interlock Accessory
  • Using VPEC Accessory to Lock the Equipment Door
  • Unlocking Equipment Door Locked with VPEC Accessory
  • VPOC Open-Door Racking Interlock
  • Activating the VPOC Racking Interlock
  • Deactivating the VPOC Racking Interlock
  • Masterpact MTZ2/MTZ3 IPA Cable-Type Door Interlock
  • Mechanical Interlocking Between Two Masterpact MTZ Devices
  • Mechanical Interlocking Between Three Main Masterpact MTZ Device
  • Mechanical Interlocking Between Two Main and One Tie Masterpact MTZ Devices
  • Mechanical Interlocking Between Two Main and One Replacement Masterpact MTZ Devices
  • Masterpact MTZ DAE Automatic Spring-Discharge Interlock
  • Inserting the Racking Handle with IBPO Racking Interlock Installed
  • Notification of a Masterpact MTZ Trip or Alarm
  • Identifying the Cause of a Masterpact MTZ Trip or Alarm Using the Micrologic X Control Unit
  • Diagnostic Data after a Masterpact MTZ Circuit Breaker Trip
  • Using the Display Screen and LEDs to Find the Cause of a Trip
  • Using the Display Screen and LEDs to Find the Cause of an Alarm
  • Masterpact MTZ Reset Sequence
  • Identifying the Masterpact MTZ Trip Cause
  • Acknowledging a Trip Message on Micrologic X Control Units
  • Clearing the Electrical Fault Before Reclosing the Masterpact MTZ Circuit Breaker
  • Inspecting the Masterpact MTZ Circuit Breaker and Switchboard after a Trip on a Short Circuit
  • Masterpact MTZ Circuit Breaker Reset Sequence
  • Masterpact MTZ Circuit Breaker Trip Cause Identification
  • Micrologic X Display Screen Trip Message Acknowledgement
  • Recommended Actions After a Trip Due to Invalid Micrologic X Control Unit Self Test
  • Micrologic X Control Unit Diagnosis Sequence
  • Identifying the Micrologic X Control Unit Alarm
  • Acknowledging the Alarm on the Micrologic X Display Screen
  • Recommended Action after Detection of a High Severity Micrologic X Control Unit Alarm
  • Recommended Action after Detection of a Medium Severity Micrologic X Alarm
  • Identify the Problem
  • Acknowledging the Error Message
  • Action after Receiving Error Message
  • Masterpact MTZ Devices Overview
  • Masterpact MTZ Devices Scope
  • Masterpact MTZ Devices Equipment
  • Masterpact MTZ Devices Test Form
  • Masterpact MTZ Devices Visual Inspection
  • Masterpact MTZ Devices Condition of Connections and Auxiliaries
  • Masterpact MTZ Devices Firmware Compatibility Check
  • Micrologic X Control Unit Settings
  • Masterpact MTZ Devices Functional Checks
  • Masterpact MTZ Devices Check of Spring Charging Motor (MCH) (If Installed)
  • Check Masterpact MTZ Devices M2C Programmable Contact and IO Module (If Installed)
  • Check ESM ERMS Switch Module (If Installed)
  • Check Masterpact MTZ Devices Electrical Continuity
  • Check Masterpact MTZ Devices High-Voltage Insulation
  • Check Micrologic X Control Unit Ready LED Status
  • Test the Tripping Function with EcoReach Software
  • Test the Tripping Mechanism with the Test Button (Micrologic 6.0X Control Units)
  • Communication Network Test with Ecoreach Software
  • Masterpact MTZ Devices Remote Control Tests
  • Masterpact MTZ Devices Final Checks
  • Project Report Generated by Ecoreach Software
  • Communication Test Report Generated by Ecoreach Software
  • How to Use the Masterpact MTZ Test Form
  • Masterpact MTZ Device Identification
  • Masterpact MTZ Devices Preliminary Checks
  • Masterpact MTZ Devices Functional and Interlock Checks
  • Masterpact MTZ Devices Electrical Continuity Checks
  • Masterpact MTZ Device Insulation Test
  • Micrologic X Control Unit Ready LED Check
  • Micrologic X Control Unit Tripping Mechanism Test
  • Micrologic 6.0X Test Button Tripping Mechanism Test
  • Masterpact MTZ Communication Tests
  • Masterpact MTZ Device Final Checks
  • Troubleshooting the Masterpact MTZ Device
  • Layer Model for Troubleshooting Masterpact MTZ Devices
  • Troubleshooting the Masterpact MTZ Device with Assistance
  • Maintenance of the Masterpact MTZ Device
  • Troubleshooting the Cradle
  • Troubleshooting Unexpected Tripping
  • Device Cannot be Closed by Using the Mechanical Closing Pushbutton
  • Device Cannot be Opened by Using the Mechanical Opening Pushbutton
  • Device Cannot be Closed by External Pushbutton/Electrical Order
  • Device Cannot be Opened by External Pushbutton/Electrical Order
  • Device Cannot be Reset Using RES Electrical Remote Reset
  • Additional Troubleshooting—Check Mechanical Operations
  • Device Cannot be Controlled from the Masterpact MTZ Mobile App
  • Inhibit Closing by IO Module is Not Operational
  • Device Cannot be Controlled from the Masterpact MTZ Mobile App Connected Through Bluetooth
  • Additional Troubleshooting—Check Mechanical and Electrical Operations
  • Device Cannot be Controlled from the IO Module
  • Device Cannot be Controlled from Ecoreach Software Connected to a Mini USB Port
  • Device Cannot be Controlled from Ecoreach Software Connected by IFE, EIFE, or IFM Interface
  • Device Cannot be Controlled from IFE or EIFE Webpages
  • Device Cannot be Controlled with a Remote Controller Connected from IFE, EIFE, or IFM Interface
  • Device Cannot be Controlled from the FDM128 Display
  • Additional Troubleshooting—Check Communication Network
  • Description of the Green Premium Label
  • Accessing the Green Premium Ecolabel
  • Check Product Environmental Criteria
  • Environmental Critera of the Green Premium Ecolabel
  • RoHs Requirements Compliance
  • REACh Regulation Compliance
  • PEP Ecopassport Compliance
  • EoLI Compliance

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Masterpact MTZ2/MTZ3 User Guide

This document applies to Masterpact MTZ2/MTZ3 circuit breakers and switches.

The aim of this guide is to provide users, installers, and maintenance personnel with technical information needed to operate Masterpact™ MTZ2/MTZ3 circuit breakers and switches.

These devices comply with the following standards:

The information provided in this documentation contains general descriptions and/or technical characteristics of the performance of the products contained herein. This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications. It is the duty of any such user or integrator to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use. Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information contained herein. If you have any suggestions for improvements or amendments or have found errors in this publication, please notify us.

No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Schneider Electric.

All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to help ensure compliance with documented system data, only the manufacturer should perform repairs to components.

When devices are used for applications with technical safety requirements, the relevant instructions must be followed.

Schneider Electric, Square D, Masterpact, Micrologic, Enerlin’X and Ecoreach are trademarks owned by Schneider Electric Industries SAS or its affiliated companies. All other trademarks are the property of their respective owners.

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schneider breaker trip settings

Ground-Fault Protection

Presentation

Ground-fault protection on Micrologic 6 E-M trip units protects all types of motor applications against ground-fault currents in the TN-S system. For more details, refer to Compact NSX - Circuit Breakers and Switch-Disconnectors 100–630 A - User Guide .

Operating Principle

Ground-fault protection is definite time. It can be configured as Ig pickup and as tg trip time delay.

Tripping curve:

Setting the Ground-Fault Protection

Set the Ig pickup:

o With the Micrologic trip unit Ig dial to preset the value and the keypad to fine-tune the value

o With EcoStruxure Power Commission software (password-protected)

o By sending a setting command using the communication network (password-protected)

Set the tg time delay:

o With the keypad on the Micrologic trip unit

Ig Pickup Setting Values

The Ig pickup setting value is in multiples of In.

The default Ig pickup setting value is the same as the minimum dial value:

o 0.60 In for trip units rated 25 A

o 0.30 In for trip units rated 50 A

o 0.20 In for trip units rated > 50 A

Ground-fault protection can be deactivated by setting the Ig dial to the OFF position.

Ground-fault protection can be reactivated even with the Ig dial in the OFF position:

o By fine-tuning on the keypad

The following three tables specify the setting values (preset by a dial) and setting ranges (set on the keypad):

o For trip units rated 25 A

o For trip units rated 50 A

o For trip units rated > 50 A

On the keypad, the increment is 0.05 x In.

Rating 25 A

Rating 50 A

Rating > 50 A

The accuracy range is +/-10%.

tg Time Delay Setting Values

The tg time delay setting value is in seconds. The hold and breaking times are in milliseconds.

The default tg time delay setting is 0 s.

The following table shows tg setting values in second (s) and the associated hold and breaking times in milliseconds (ms):

Testing the Ground-Fault Protection

The ground-fault protection can be tested to check the electronic tripping function of the trip unit. Use the keypad of the Micrologic 6 trip unit to perform this test.

Follow these steps to test and reset the ground-fault protection on Micrologic 6 trip units.

DOCA0141EN-01

© 2020 Schneider Electric. All rights reserved.

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COMMENTS

  1. Adjusting Mag-Gard, PowerPacT, or TeSys Magnetic Trip Setting

    80459-641-01, Rev. 09. Adjusting Mag-Gard, PowerPacT, or TeSys Magnetic Trip Setting. The adjustable magnetic trip setting is factory-set at Lo for Mag-Gard Motor Circuit Protectors. For PowerPacT H- and J-frame, and TeSys BV4 Motor Circuit Protectors, where applicable, the Full Load Amp Setting (FLA) is factory set to the lowest setting.

  2. Protection Setting Guidelines

    The following table gives the guidelines for overcurrent protection setting by application: Application. MicroLogic2.0 X. MicroLogic3.0 X. MicroLogic5.0 X, 6.0 X, 7.0 X(1) Secondary side of MV/LV transformer (switchboard main incomer) with other MasterPact , Compact NS, or PowerPact P- and R-frame circuit breaker downstream as feeder.

  3. 6 Adjustable Tripping Settings of a Circuit Breaker You MUST ...

    Short-time pickup is adjustable from 1.5 to 10 times the trip unit ampere setting (Ir). For example, a 1000 ampere frame can be adjusted to trip anywhere from 1500 to 10,000 amps. The switch also has an "OFF" position to eliminate short-time pickup and short-time delay. Short-time pickup used for selective tripping.

  4. MicroLogic ™ Electronic Trip Systems

    The MicroLogic H trip unit provides additional sampling of the waveforms to measure and provide waveform capture of harmonic distortion to the 31st harmonic. MasterPact universal power circuit breakers use MicroLogic electronic trip systems to sense overcurrents and trip the circuit breaker. The MicroLogic basic trip unit is standard and all ...

  5. MicroLogic 0, 1, 2, and 3 Electronic Trip Units User Guide

    Contact Sales. Start your sales inquiry online and an expert will connect with you. This manual describes operation of the MicroLogic 0, 1, 2, and 3 trip units only.

  6. Micrologic 5.0 and 6.0 Tutorial for Schneider Circuit Breakers

    In this tutorial, we delve into the intricacies of configuring trip points and delay settings on Micrologic 5.0 and 6.0 series trip units, specifically desig...

  7. Can you fine tune the trip settings of Powerpact H, J and L frame breakers?

    Molded case circuit breakers Environment: Powerpact H, J and L frame breakers with Micrologic trip units Resolution: You must have the Micrologic ammeter 5.2A/6.2A or energy 5.2E/6.2E trip unit in order to fine tune the settings. The keypad can be used to make fine adjustments in 1 A steps below the maximum value defined by the setting on the dial.

  8. Thermal-Magnetic Trip Unit Summary

    Upgradeability of trip units depends on the circuit breaker type: o For 1 or 2 poles, trip units are built-in.. o For 3 or 4 poles, trip units are interchangeable.. NOTE: In Compact NSX circuit breakers with R, HB1, and HB2 breaking performances, the trip units are not interchangeable. Onsite swapping of trip units is simple and reliable: o No connections to make

  9. Masterpact MTZ2/MTZ3 User Guide

    The aim of this guide is to provide users, installers, and maintenance personnel with technical information needed to operate Masterpact™ MTZ2/MTZ3 circuit breakers and switches. The information provided in this documentation contains general descriptions and/or technical characteristics of the performance of the products contained herein.

  10. Micrologic Trip Units

    Micrologic electronic trip units are designed for use in both PowerPact and Masterpact circuit breakers. Part of PacT Series. All Micrologic trip units provide impeccable, electronic circuit protection with adjustable protection settings for maximum system coordination and flexibility. Sophisticated functionality, such as energy and power ...

  11. TM-D Thermal-Magnetic Trip Unit for 3P and 4P Circuit Breakers from 80

    Setting the Magnetic Protection on Trip Units with In from 200 A to 250 A. For trip units rated between 200 A and 250 A, the magnetic protection pickup Im is set using a 6-setting dial. Turning the magnetic protection adjustment dial ( A) modifies the trip curve as shown (B). The following table shows the values of the pickup Im (in amperes ...

  12. Energy Reduction Maintenance Settings (ERMS)

    Energy Reduction Maintenance Settings (ERMS) Presentation. The ERMS function is used to reduce protection settings so that the circuit breaker trips as soon as possible when an arc fault occurs. Minimizing the time between fault and trip helps to reduce the risk of injury when qualified electrical personnel are near energized equipment.

  13. MicroLogic 5.0P and 6.0P Electronic Trip Units User Guide

    Contact Sales. Start your sales inquiry online and an expert will connect with you. This instruction bulletin provides information on display navigation, trip unit configuration, operation, and trip unit, rating plug, and battery...

  14. Settings for the Square D Circuit Breaker

    Issue: Settings for the Square D Circuit Breaker. Settings for the Schneider Circuit Breaker Resolution: The three dials: The Long Time Protection (I r), The Long Time Protection trip time (t r), The instantaneous trip (I i), needs to be adjusted during chiller start-up or breaker replacement to prevent nuisance trip.. Example 1:

  15. AIR CIRCUIT BREAKER PROTECTION SETTINGS

    AIR CIRCUIT BREAKER PROTECTION SETTINGS - SCHNEIDER ELECTRIC MAKE ACBThe long-time delay should be adjusted in such a manner that the inrush current should b...

  16. 5 Basic Tripping Settings for Circuit Breakers to Know

    The 5 basic tripping settings for circuit breakers you should know about are: Continuous amps. Long time delay. Short time pick up. Short time delay. Ground fault pick up. Choosing the correct circuit breaker and tripping settings will protect you from financial loss in the event of a power outage.

  17. Monitoring the Tripping Circuit

    It is recommended to perform preventive maintenance as proposed by Schneider Electric. ... High with trip. 0x1430 (5168) Protection settings reset to factory values. Diagnostic. High. 0x1409 (5129) ... Circuit breaker self diagnostic trip. Replace the circuit breaker. 0x1400 (5120) Control unit self test major malfunction 1. Plan to replace the ...

  18. Ground-Fault Protection

    Setting the Ground-Fault Protection. Set the Ig pickup: o With the Micrologic trip unit Ig dial to preset the value and the keypad to fine-tune the value. o With EcoStruxure Power Commission software (password-protected). o By sending a setting command using the communication network (password-protected). Set the tg time delay: o With the keypad on the Micrologic trip unit