Alstom MMLG02 MMLG02R1AA0001E
Alstom MMLG02 MMLG02R1AA0001E
Alstom MMLG02 MMLG02R1AA0001E
Alstom MMLG02 MMLG02R1AA0001E
Alstom MMLG02 MMLG02R1AA0001E
Alstom MMLG02 MMLG02R1AA0001E
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MMLG02 MMLG02R1AA0001E

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The MMLG02 MMLG02R1AA0001E is a test module designed specifically for busbar protection applications, featuring a vertical mounting configuration and a gray/gray color scheme.
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Technical specifications for MMLG02 MMLG02R1AA0001E

  • Manufacturer:
    Alstom
  • Part Number:
    MMLG02 MMLG02R1AA0001E
  • Product Family:
    Alstom
  • Product Series:
    MiDOS Series
  • Product Type:
    Test Module
  • Mounting Type:
    Vertical
  • Housing Color:
    Grey / Grey
  • Number of Circuits:
    14
  • Continuous Current Rating:
    20A
  • Application:
    Busbar Protection Schemes
  • Weight:
    1.3 kg
  • Estimated shipping dimensions:
    5x24.5x17.6cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications

Features:

  • Interface for Safe Isolation and Secondary Injection Testing in Protection Circuits
  • Supports Online Maintenance Without Disturbing Field Wiring
  • Designed for Use with Busbar and Relay Protection Panels
The Alstom MMLG02 MMLG02R1AA0001E operates as a protection test block within substation and industrial protection systems, providing a secure interface for testing, isolation, and monitoring of relay circuits. It is designed to facilitate safe secondary injection testing and routine maintenance without requiring the disconnection of field wiring. By inserting the dedicated test plug, users can isolate current and voltage circuits, ensuring reliable verification of protection schemes while the system remains in service.

The MMLG02 test block improves maintenance efficiency and operational safety in modern protection panels. It typically provides multiple terminal pairs (commonly 14 ways in Size 2 format) arranged for structured circuit management. The module is installed directly on the protection panel and connected via rear terminals, allowing technicians to perform functional checks, commissioning tests, and troubleshooting with minimal system disruption.

The Alstom MMLG02 MMLG02R1AA0001E performs a critical support role within the protection path by enabling controlled access to relay circuits. Proper use of the test block helps prevent wiring errors, reduces downtime during inspections, and enhances personnel safety during live system testing. It occupies a dedicated panel position adjacent to protection relays and is widely used in busbar differential protection, transformer protection, feeder protection, and breaker failure schemes.

For applications requiring structured maintenance procedures, the MMLG series supports the use of compatible test plugs to provide automatic circuit isolation and reconnection. When the test plug is inserted, the normal circuit path is interrupted in a predefined sequence, allowing safe injection of test signals while maintaining clear circuit status. This design ensures repeatable and reliable testing operations in high-reliability power protection environments.

The Alstom MMLG02 MMLG02R1AA0001E test module may still be available for supply and technical support through Apter Power and global automation spare parts networks, even for systems where the original manufacturer lifecycle status has changed.

Alstom MMLG02 MMLG02R1AA0001E Busbar protection test block Manuals, Datasheets, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Alstom MMLG02 MMLG02R1AA0001E Busbar protection test block

General

  • Manufacturer Alstom
  • Model MMLG02 MMLG02R1AA0001E
  • Condition New Original ready stock
  • Product Family MMLG01,MMLG02,MMLG07
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Description
The MMLG02 MMLG02R1AA0001E is a test module specifically designed for busbar protection applications, featuring vertical mounting configuration and grey/grey color scheme. The MMLG02R1AA0001E model enables testing to be performed without disturbing the protective system wiring, thereby simplifying monitoring, isolation, and secondary injection testing procedures, making on-site testing operations more efficient and convenient.

The MMLG02 MMLG02R1AA0001E test module features a compact design that can be mounted adjacent to MiDOS or MiCOM Agile protection relays and systems, facilitating rapid deployment and maintenance in the field. The MMLG02R1AA0001E model effectively enhances testing efficiency while minimizing the impact on normal protective system operations during testing activities, making it suitable for various busbar protection application scenarios.

The MMLG02 MMLG02R1AA0001E test module provides power system maintenance personnel with a safer and more reliable testing solution by eliminating the need to disturb protective system wiring. The MMLG02R1AA0001E model supports simplified monitoring functions, isolation operations, and secondary injection testing, ensuring that all testing work can be completed quickly and accurately to meet the stringent requirements of modern power systems for efficient maintenance.
Alternative Names
MMLG02MMLG02R1AA0001E MMLG01 MMLG03 MMLG02 MMLG04
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the main advantage of using MMLG02 MMLG02R1AA0001E for testing?
The MMLG02 MMLG02R1AA0001E eliminates the need to disturb protective system wiring for testing, making monitoring, isolation, and secondary injection testing simplified and quickly performed.
Which protection relays and systems can MMLG02 MMLG02R1AA0001E be mounted adjacent to?
The MMLG02 MMLG02R1AA0001E can be mounted adjacent to MiDOS or MiCOM Agile protection relays and systems.
How does MMLG02 MMLG02R1AA0001E benefit field maintenance operations?
The MMLG02 MMLG02R1AA0001E facilitates rapid deployment and maintenance in the field, effectively enhances testing efficiency, and minimizes the impact on normal protective system operations during testing activities.

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