- 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