MCDGV4-2A0AA 发电机差动保护装置

MCDGV4-2A0AA is a generator differential protection device, belonging to the highPROTEC series. It is a high-precision protection device designed for medium and high power generators. The device provides not only phase and ground current differential protection, but also a variety of protection functions tailored to the specific needs of the generator. It includes a comprehensive protection package with phase, ground current, voltage, frequency and power protection, as well as low voltage directional reactive power protection with reconnection and adjustable fault crossing (FRT) features with AR detection.

Here are some of the key features and parameters of the device:

High precision protection: suitable for medium and high power generators.
Integrated boost transformer: can be integrated into the protection area (unit protection/block protection).
Comprehensive protection features: Including phase and ground differential protection, overexcitation protection, underexcitation protection, overload (stator)/thermal simulation, multi-element (voltage dependent) overcurrent protection, reverse power protection, negative phase sequence protection, two-element phase distance protection, out-of-step tripping, power swing blocking, 100% Stator ground fault protection, multistage overvoltage protection, multistage undervoltage protection, watt-metering ground fault protection, unintentional power-on detection, Buchholz monitoring, etc.
Communication options: Support a variety of communication protocols, such as IEC 61850, Profibus DP, Modbus RTU and/or Modbus TCP, IEC 60870-5-103/-104, DNP 3.0 (RTU, TCP, UDP), etc.
Recorder: Includes fault recorder, event recorder and trend recorder.
PC Tools: Provides setup and analysis software Smart view that can be used consistently across the entire device family.
Control: Up to six circuit breakers (or isolating switches/ground switches) can be controlled.
Certification: conforms to VDE-AR-N 4110, VDE-AR-N 4120, G99, IEEE 1547-2003, ANSI C37.90-2005 and other standards, and has passed KEMA laboratory type testing and certification.
The device is suitable for use in the power industry, especially in power plants and substations, to protect and control generators from various faults and abnormal conditions. It ensures generator reliability and grid stability by providing comprehensive protection features and flexible communication options.