Schneider SEP888 Base Unit

Product Description

The SEP888 serves as the sophisticated hardware foundation for the Schneider Electric Sepam Series 80 protection range. This base unit is engineered for high-performance monitoring and protection of medium-voltage power distribution networks. By integrating advanced control logic with a high-resolution User Machine Interface (UMI), the SEP888 allows operators to visualize electrical flows and system status in real-time through its dedicated mimic-based display.

Built to endure rigorous industrial environments, the SEP888 features a wide-range universal power supply and superior immunity to electrical microbreaks. Its front panel is designed for high-visibility parameter tracking, utilizing a multi-LED array to signal operational health and fault conditions instantly. With its fixed plate-mounting design and robust fire-resistant construction, this unit ensures long-term stability and safety in critical utility and industrial switchgear.

Technical Specifications

• Manufacturer: Schneider Electric

• Series: Sepam Series 80

• Model Name: SEP888 Base Unit

• User Interface (UMI): * Display: Mimic-based graphic LCD

• Resolution: 128 x 240 pixels

• Interaction: 14-key tactile membrane keypad

• Status Indication: * 2 LEDs for global Sepam operating status (Front/Rear)

• 9 High-intensity LEDs for real-time parameter and alarm indication

• Electrical Characteristics:

• Rated Supply Voltage: 24V to 250V DC (Universal Input)

• Voltage Tolerance: -20% to +10%

• Inrush Current: < 10 A for 10 ms duration

• Power Consumption: Optimized at < 16 W

• Microbreak Immunity: 100 ms (Ensures stability during transient power dips)

• Backup Battery: * Type: Lithium 3.6 V (1/2 AA size)

• Service Life: 10 years (Energized) / 8 years (Shelf life)

• Mechanical & Environmental:

• Mounting Mode: Fixed plate mounting

• Ingress Protection: IP52 (Front panel) / IP20 (Rear/Other panels)

• NEMA Rating: Type 12 compliant

• Fire Resistance: 650°C per IEC 60695-2-11

• Dimensions: 222 mm (H) x 264 mm (W) x 89.7 mm (D)

• Net Weight: 4.22 kg

Application Scenarios

The SEP888 is the central component for specialized protection applications, including:

• Substation Automation: Providing comprehensive feeder, transformer, and motor protection in MV grids.

• Industrial Power Plants: Monitoring generator synchronization and busbar stability.

• Infrastructure Protection: Used in hospitals and data centers where high immunity to power microbreaks is required for continuous operation.