M1 smart grid overcurrent and grounding protection device

M1 is a universal current and grounding protection device, designed with high capacity and resource redundancy. It is suitable for radial power grids with direct grounding, resistance grounding, or impedance grounding in 35KV and below power systems. It can protect, control, and monitor the incoming and outgoing intervals of medium voltage distribution networks, and set different current type protection functions according to site conditions

Main functions:

• Protection function: It can provide quick break, overcurrent, timed limit, inverse time limit, zero sequence, and three non electric quantity protections.
• Measurement function: three-phase current.
• Display screen: LCD 128 × 32 power on screen programmable graphic display, 4 lines of English or 2 lines of Chinese characters display measurement values, measurement values, switch status, setting values, communication settings, time settings and other interfaces.
• 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, and multiple communication protocols.

Interface:

• 4-channel AC current input, connected to protective CT.
• Standard configuration includes 10 DI channels: AC/DC dual-use.
• 7 channels of DO: DO1-DO6 can all be connected to the control circuit, and the first four channels can be directly connected to the opening and closing circuit.
• Optional anti bounce circuit module or additional 6-way DI module.
• RS485 interface, optional Ethernet port, and other multiple interfaces (each interface is independent of each other).

Programmable functions:

It has programmable product logic functions that are only available on high-end products of other foreign companies, and 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 M3 at any time, fully realizing the configurability of the protection device. More flexible settings can avoid on-site replacement of equipment models and the need for spare parts for each model.

Three non electricity level protections.