Schneider MICOM P127 Special relay protection device for medium voltage transmission lines

Specific Parameters

Brand Schneider (Schneider Electric, French Brand)

Product Series MICOM Series

Product Type Medium-voltage Line Relay Protection Device

Model MICOM P127

Adaptable Voltage Level 11kV-33kV medium-voltage lines

Supply Voltage DC 24V/48V/110V/220V, AC 110V/220V

Protection Functions Overcurrent protection, ground fault protection, recloser protection, overload protection, undervoltage protection

Measurement Accuracy Current/voltage measurement accuracy ±0.2%, power measurement accuracy ±0.5%

Communication Interface Standard RS485, supporting Modbus RTU protocol; optional Ethernet interface, supporting IEC 61850 protocol

Operating Temperature Range -25℃ to +70℃

Storage Temperature Range -40℃ to +85℃

Relative Humidity 5% to 95%, no condensation

Dimensions 145mm×145mm×240mm

Weight 1.8kg

Installation Method Panel mounting, embedded mounting optional

Certification Compliant with IEC 60255, GB/T 7261 standards, with CE, UL certification

Product Performance

Integrated with multiple protection functions, it can accurately identify various faults such as overcurrent and ground faults, quickly trigger protection actions to cut off fault lines, and support automatic reclosure function to improve line power supply reliability.

With measurement accuracy up to ±0.2%, it can real-time and accurately monitor line current, voltage, power and other parameters, provide data support for line operating status evaluation, and facilitate operation and maintenance personnel to grasp line working conditions.

Wide voltage power supply design adapts to various AC and DC power specifications, meeting the power supply needs of different power distribution scenarios, and supporting panel and embedded installation to adapt to different cabinet layouts.

Wide temperature operating range of -25℃ to +70℃ and high humidity adaptability can withstand harsh climates and industrial environments, ensuring stable operation under extreme conditions with long trouble-free working time.

Supports mainstream communication protocols such as Modbus RTU and IEC 61850, which can be seamlessly connected to power distribution automation systems to realize remote monitoring, parameter configuration and fault data upload, simplifying operation and maintenance processes.

Equipped with complete self-test function, it can real-time monitor the status of device hardware, power supply and sampling circuit, timely feedback fault information, facilitate quick troubleshooting and reduce operation and maintenance costs.

Modular design enables convenient function expansion, and can add protection and measurement functions according to actual needs, adapting to different line protection scenarios with strong versatility.

The operation interface is simple and intuitive, supporting Chinese display, equipped with buttons and indicator lights, facilitating on-site debugging and operation, and improving installation and commissioning efficiency.