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Phone: +86 18059884790
E-mail: plc66@qq.com
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- Warehouse: Spot
- Warranty： 365 days
- Quality: Original module
- Condition： New
- Shipping method: Courier delivery
- Contact person: LI MING
- Contact number: +86 18059884790
- WeChat：18059884790
- E-mail: plc66@qq.com
Alstom MMLG01B1AA0001C Product Description
Alstom MMLG01B1AA0001C is a standard 28-terminal test block module designed for power plant protection and control systems. It provides safe isolation and test access points for secondary circuits of protection relays, current transformers and voltage transformers. This module enables technicians to perform circuit testing, injection tests and maintenance without disconnecting hard wiring, protecting equipment and personnel during substation commissioning and troubleshooting.
Product Features
- 28 terminal layout for CT/PT secondary circuit isolation and testing
- Built-in shorting function for current transformer circuits to prevent open-circuit hazards
- Robust industrial housing for long-term installation inside relay panels
- Clear terminal marking to reduce wiring error risk during maintenance
- Allows safe on-site signal injection and measurement without rewiring
- Compact rack mount design, matches Alstom legacy protection cabinet layout
- High dielectric strength and anti-vibration construction for substation environments
- Simple plug-and-replace structure for spare part swap during overhaul
Application Scenarios
- Power plant generator and turbine protection relay panels
- High voltage substation CT and PT secondary circuit test interfaces
- Utility power distribution protection system commissioning & maintenance
- Industrial plant internal substation relay cabinet retrofitting
- Marine power system protection panel testing and inspection
- Spare replacement for existing Alstom MMLG01 series test blocks
FAQ
Q1: What is Alstom MMLG01B1AA0001C?
A: It is a 28-terminal test block module used in substation relay cabinets, providing safe test access for CT/PT secondary circuits.
Q2: Is MMLG01B1AA0001C still in original production?
A: Alstom discontinued this legacy test block. Our available stock units are fully tested surplus spares for replacement.
Q3: What is the main safety function of this test block?
A: It can short CT circuits before opening connections, avoiding dangerous high voltage caused by CT open circuit.
Q4: Can I use it for voltage transformer secondary circuits?
A: Yes, it supports both current transformer and voltage transformer secondary loop isolation and testing.
Q5: How to confirm compatibility before purchase?
A: Verify your cabinet cutout size, terminal count and original part number to ensure the test block matches your relay panel.
