M7G Smart Grid Programmable Digital Generator Protection and Measurement Device

M7G is a programmable generator differential protection measurement and control device, suitable for differential protection, backup protection, and control detection of generator sets below 10MW.

Main functions:

• Protection function: It can achieve dual slope ratio braking differential quick break protection and optional generator backup protection function. It can provide comprehensive line protection functions such as composite voltage lockout overcurrent protection, timed limit, overvoltage, undervoltage, 100% stator grounding protection, non electric quantity protection, overexcitation, reverse power, overload, demagnetization, turn to turn short circuit, zero sequence, CT disconnection, control circuit disconnection, etc.
• Measurement function: Full three-phase power parameters, including voltage, current, power factor, frequency, active power, and reactive power.
• Display screen: Programmable graphical large LCD display, and real-time display of voltage and current waveform.
• Indicator light: Programmable three color indicator light, which can define display properties and indicator parameters.
• GPS timing: The GPS timing accuracy is 1ms, and TTL and RS422 modes can be selected.
• SOE event recording: Provides SOE recording functionality.
• Fault recording function: Provides COMTRADE format recording files with time scale standards.
• Communication function: Supports communication methods such as RS485, Ethernet, Profibus, and multiple communication protocols.

interface

• 7-way AC current input, connected to terminal current, neutral point current, and zero sequence current.
• 5-way AC voltage input, connected to terminal voltage and zero sequence voltage.
• 16 programmable switch inputs (optional addition of 16 channels).
• 10 programmable switch output channels (optional to add 6 channels).
• Optional programmable DC analog signal input and output circuits.
• Can communicate with RTD module (remote temperature acquisition module can directly connect to 8 thermal resistors).
• RS485 interface, optional Ethernet port Profibus、 Fiber optic and other multi-channel interfaces (each interface is independent of each other).

Programmable functions:

Equipped with programmable product logic, users can freely define protection logic and other functions on a unified hardware platform. Support dedicated programmable debugging software PLPShell, through the RS232 interface of the panel, users can easily program and debug the protection function logic, engineering, and testing of M7G at any time, completely realizing the configurability of the protection device