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MMLG01

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The MMLG01 is a standard test block from Alstom designed for use in power protection systems. It is intended to be mounted adjacent to Midos modular relays and systems.
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Technical specifications for MMLG01

  • Manufacturer:
    Alstom
  • Part Number:
    MMLG01
  • Product Family:
    Alstom
  • Dielectric Strength - Terminals to Ground:
    5 kV rms / 1 minute
  • Dielectric Strength - Adjacent Contacts:
    2 kV rms / 1 minute
  • Dielectric Strength - Alternate Contacts:
    5 kV rms / 1 minute
  • Dielectric Strength - Terminals 13-14 (without cover):
    1 kV rms / 1 minute
  • Current Rating:
    Continuous 20 A or 400 A / 1 second
  • Max Operating Voltage:
    300 V AC or DC
  • Storage Temperature:
    -25°C to +70°C
  • Operating Temperature:
    -25°C to +55°C
  • Humidity Resistance:
    56 days, 93% RH, +40°C
  • Weight:
    1.32 kg
  • Estimated shipping dimensions:
    5.1x24.5x17.7cm
  • 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.
Description
The MMLG01 is a standard test block from Alstom designed for use in power protection systems. It is intended to be mounted adjacent to Midos modular relays and systems. The key advantage of the MMLG01 lies in enabling testing and maintenance without disturbing or altering the original wiring of the protection system, thereby maintaining system integrity while improving testing efficiency and operational safety.

Functions and Application Features
Alstom MMLG01 standardizes and centralizes critical test interfaces within power protection systems, allowing the following operations to be simplified and performed efficiently: system monitoring, circuit isolation, and secondary injection testing. Although originally developed for the Midos series, the MMLG01 is equally suitable for use in any power system protection scheme, serving as a versatile interface for monitoring and secondary injection testing.

Test Plug Compatibility
In practical applications, the MMLG01 is typically used in conjunction with the MMLB 01 multi-finger test plug to support comprehensive multi-circuit testing. It can also be paired with the MMLB 02 single-finger test plug for monitoring the current of an individual circuit taken from the test block. This flexible compatibility allows the MMLG01 to adapt to a wide range of protection circuits and testing scenarios.

Safety and Operating Considerations
When using the Alstom MMLG01, terminals 13 and 14 must not be used for CT (current transformer secondary) connections, as this may create serious safety hazards. Prior to operation, users should visually inspect the insulation of all flying leads and verify the continuity and insulation condition of shorting plugs or shorting links to ensure safe and reliable testing.
Alternative Names
MMLG 01 MMLG02 MMLG 01 MMLB01 MMLB 01
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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 are the main functional features of the MMLG01 Standard Test Block?
The MMLG01 can be installed adjacent to Midos modular relays and systems, requires no disturbance to the original wiring of the protection system during testing, and simplifies and speeds up operations such as monitoring, isolation, and secondary injection testing.
What are the application scenarios for the MMLG01?
Although designed for the Midos series, the MMLG01 can be used for monitoring and secondary injection testing in any power system protection scheme. It is typically used in conjunction with the multi-finger test plug MMLB01, and can also be used with the single-finger test plug MMLB02 for monitoring current in a single loop circuit drawn from the test block.
What are the key safety precautions when using the MMLG01?
Terminals 13 and 14 of the MMLG01 must not be used for CT (current transformer) secondary connections, as this may create safety hazards.
What inspections should be performed before using the MMLG01?
Before using the MMLG01, the following checks should be performed: 1) Visually inspect the flying lead insulation for damage; 2) Check the continuity and insulation condition of the shorting plugs/short-circuit wires.

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