Description

SEPAM M88 Motor Protection Relay

Technical Specifications

• Product Model: Sepam M88
• Brand: Schneider Electric
• Warranty: One Year
• Protection Functions: Phase overcurrent, earth fault, thermal overload, stall, jam, underload, phase unbalance, phase reversal protection for MV motors
• Measurement: 3-phase current, voltage, active/reactive power, energy, frequency measurement
• Current Inputs: 5 A / 1 A secondary CT inputs
• Voltage Inputs: 100 V / 400 V secondary VT inputs
• Operating Temperature: -25 °C ~ +70 °C
• Storage Temperature: -40 °C ~ +85 °C
• Protection Class: IP40 front panel, IP20 rear housing
• Communication: RS-485 Modbus RTU, optional IEC 61850 / Ethernet
• HMI: Front-panel LCD display with keypad, fault event recorder, disturbance recorder
• System Compatibility: Medium-voltage motor control centers (MCC), substation automation systems
• Certifications: IEC 60255 compliant
• Humidity: 5-95 % RH non-condensing
• Weight: 2.3 kg
• Dimensions: Standard 4U rack-mount / panel-mount footprint
• 

Product Overview

Sepam M88 is a comprehensive digital motor protection relay from Schneider Electric Sepam 80 series. It provides full protection, measurement and control functions for medium-voltage induction and synchronous motors in industrial plants, utility substations and mining facilities. Integrated thermal model protects motor against overload and stall conditions, while communication interfaces enable integration with SCADA and DCS systems. Widely deployed for pump, fan, compressor and crusher motor protection. Surplus and refurbished tested spare protection relay for substation and MCC maintenance projects.

Application Notes

• Set protection parameters according to motor nameplate data.
• Perform secondary injection test after installation to verify protection functions.
• Typical deployment: Medium-voltage motor protection relay spare-part stocking.