Parameters Category Parameter Typical Specification / Value for SPAM150C-CA General Product Family & Type SPAM150C - Numerical Motor Protection Relay Hardware Variant -CA (Specific I/O & Power Supply Configuration) Standard IEC 60255, IEC 61850, IEEE C37.90 Power Supply Operational Voltage Common: 24-48 V DC, 48-110 V DC, 110-250 V DC, or 110-230 V AC (Order-specific) Current Inputs Rated Current (Iₙ) 1 A or 5 A (Defined by ordering code) Thermal Withstand Continuous: 2 x Iₙ; 1 sec: 100 x Iₙ Voltage Inputs Rated Voltage (Uₙ) 100-120 V or 190-230 V line-to-neutral (via VT) Binary Inputs (BI) Number Typically 12-16 (Configurable in groups) Output Relays (BO/PO) Trip/Alarm Relays Typically 8-10 (Mix of fast, high-capacity and signal relays) Analog Inputs Temperature (RTD) 4-6 dedicated inputs for Pt100 sensors (Bearing/Stator temp.) Human-Machine Interface Display Graphical LCD with backlight Local Control Keypad for navigation and control Communication Primary Protocol IEC 61850-8-1 (MMS & GOOSE) Serial Protocols Modbus RTU (RS485), often includes DNP3 or IEC 60870-5-103 Physical Ports 1 x Electrical Ethernet (RJ-45), 1-2 x RS485 Serial Ports Core Protection Functions (ANSI) Thermal Model 49 (Thermal Overload) with start-up and stall supervision Overcurrent 50/51 (Phase OC), 50N/51N/67N (Earth Fault), 46 (Unbalance) Motor-Specific 14/66 (Stall/Locked Rotor), 37 (Undercurrent), 32 (Under/Over Power) Other 27/59 (Under/Overvoltage), 81 (Frequency), 38/49T (Bearing Temp.) Monitoring & Metering Measurements I, V, P, Q, S, PF, Energy, Motor Starts, Run-time Recording Oscillographic Fault Recorder, Event Log (SOE), Trip Log Environmental Operating Temperature -20°C to +70°C (Standard industrial range) Housing Compact, for panel mounting.