ALSTOM MMLG 01
ALSTOM MMLG 01
ALSTOM MMLG 01
ALSTOM MMLG 01
ALSTOM MMLG 01
ALSTOM MMLG 01
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com

MMLG 01

/ 4.9
1001 reviews | Need a Specific Revision?
The Alstom MMLG 01 is a 14-circuit MiDOS test block for protection-scheme monitoring, circuit isolation and secondary-injection testing without disturbing permanent wiring.
In Stock
Ships by Wednesday, October 28
Fast Shipping Available
Get a quick price for MMLG 01
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for MMLG 01

  • Manufacturer:
    Alstom
  • Part Number:
    MMLG 01
  • Product Family:
    Alstom
  • Product Type:
    Test Block
  • Stock:
    1
  • Circuit Count:
    14
  • Rear Terminations:
    14 separate terminal pairs
  • Continuous Contact Current:
    20 A
  • Short-Time Contact Current:
    400 A for 1 s
  • Maximum Continuous Working Voltage:
    300 VAC or DC
  • Case-to-Earth Dielectric Withstand:
    5 kV rms for 1 minute
  • Adjacent-Contact-Pair Dielectric Withstand:
    2 kV rms for 1 minute
  • Alternate-Contact-Pair Dielectric Withstand:
    5 kV rms for 1 minute when the intermediate pair is unused
  • Cover-Interlock Dielectric Withstand:
    1 kV rms for 1 minute between terminals 13 and 14 with cover removed
  • Operating Temperature:
    -25 to +55 °C
  • Storage and Transit Temperature:
    -25 to +70 °C
  • Humidity Endurance:
    56 days at 93% RH and +40 °C
  • Enclosure Protection:
    IP50 with cover; IP20 without cover
  • Vibration Classification:
    IEC 60255-21-1 Response Class 2
  • Rear Terminal Connection:
    One 4 mm screw outlet plus two 4.8 × 0.8 mm blades per terminal
  • Minimum Protective-Earth Conductor:
    2.5 mm²
  • Dimensions:
    5.1 × 17.7 × 21.2 cm
  • Weight:
    1.32 kg
  • Tariff Code:
    8536909000
  • 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 Test Access Circuit Safety Installation Application
  • Provides 14 test circuits for protection-system access
  • Allows monitoring, isolation, and secondary-injection work without disturbing permanent wiring
  • Coordinates CT shorting and circuit isolation through the associated test-plug arrangement

MMLG 01 is an Alstom MiDOS size 2 test block for protection, measurement, and control schemes.

Each of its 14 circuits terminates at a separate rear pair, while the front test interface accepts the documented MMLB multi-finger or single-finger plug for controlled access.

Before installation or replacement, verify the exact MMLG variant, panel cut-out, terminal allocation, CT shorting plan, cover-interlock circuit, protective earth, and required test-plug accessories.

Availability, condition, price, and shipping time for MMLG 01 are confirmed during quotation.

Alstom MMLG 01 Test Block Manuals, Datasheets, Links

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.

  • Brings 14 protection-system circuits to front-accessible test sockets
  • Accepts the MMLB 01 multi-finger test plug for scheme isolation and injection
  • Accepts the MMLB 02 single-finger plug for individual-circuit monitoring
  • Requires external CT shorting links before insertion of the multi-finger plug
  • Reserves terminals 13 and 14 for the cover-interlock function rather than CT circuits
  • Separates isolated equipment-side sockets from potentially live supply-side sockets
  • Uses the MiDOS size 2 flush-mounting format
  • Provides screw-outlet and blade-connector options at each rear terminal
  • Requires a protective-earth connection using at least 2.5 mm² conductor
  • Monitoring circuits in power-system protection schemes
  • Secondary-injection testing of protection relays and schemes
  • Individual protection-circuit current monitoring with the MMLB 02 plug
Description
MMLG 01 is an Alstom 14-circuit test block for protection, measurement, and control schemes using the MiDOS equipment format.

The block provides front-panel access for monitoring, isolation, and secondary-injection testing, with coordinated contact sequencing that supports current-transformer shorting and voltage-circuit isolation without disturbing permanent wiring.

Before installation or replacement, confirm the 14-circuit arrangement, MiDOS size 2 panel cut-out, terminal sequence, protective-earth connection, and the required MMLB test-plug configuration.
Alternative Names
MMLG 01 MMLG01 Alstom MMLG 01 Alstom MMLG01 MiDOS MMLG 01
Technical notes
MMLG 01 replacement requires matching the 14-circuit arrangement, panel cut-out, terminal wiring, earthing and associated MMLB test-plug scheme; incorrect circuit sequencing is the primary compatibility risk.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

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.
Can MMLG 01 directly replace MMLG 02, MMLG 03, or MMLG 04?
No automatic interchange should be assumed. MMLG 02 has a busbar-protection arrangement, while MMLG 03 and MMLG 04 are horizontal versions; match the exact circuit function, orientation, terminal sequence, and panel cut-out.
Can an existing MMLB test plug be reused with MMLG 01?
MMLB 01 is the documented multi-finger plug for monitoring and secondary-injection work, while MMLB 02 is a single-finger monitoring plug. Confirm the plug type, inspect insulation and lead continuity, and reproduce the approved link arrangement before use.
Does MMLG 01 include the MMLB 01 test plug and external shorting links?
The MMLG 01 test block and MMLB plugs are separate product identities in the official data. Do not assume the plug, shorting links, leads, or other test accessories are included unless the stock description lists them.
Which MMLG 01 terminals must be excluded from current-transformer circuits?
Terminals 13 and 14 must not be used for CT connections. Their short contact-finger and cover-interlock function create an open-circuit hazard in a CT application.
What must be checked before fitting MMLG 01 into an existing panel?
Verify the MiDOS size 2 cut-out, fixing-hole pattern, rear clearance, terminal numbering, protected-earth conductor, and whether the existing wiring uses screw outlets or blade connectors.
How should MMLG 01 be commissioned after rewiring?
Prove terminal-to-terminal continuity, verify the cover interlock on terminals 13 and 14, check the protective-earth connection, confirm CT shorting links are fitted before plug insertion, and test the protection scheme under the site procedure.
What is the main safety risk when using MMLG 01 for current measurement?
A CT secondary must never be left open circuit. Connect an ammeter on the correct range before inserting an MMLB 02 single-finger plug, and do not change the range while the plug remains inserted.

Product Browsing History