Model Interpretation

SR369: 369 series motor management relay

HI: High‑impedance control power (60–265 VAC / 50–300 VDC, 48–62 Hz)

R: 12 built‑in 3‑wire RTD inputs (Pt100, Ni100/120, Cu10)

M: Enhanced metering package (3‑phase, power, energy, demand)

0: No fiber‑optic port

P: Profibus‑DP communication interface

0: No harsh environment conformal coating

E: Enhanced diagnostics + 40‑character LCD front panel

Technical Parameters

Input & Power

CT Input: 5 A secondary phase current (standard); 1 A optional

VT Input: 60–120 V phase‑neutral

Control Power: 60–265 VAC / 50–300 VDC, 48–62 Hz

Power Consumption: ≤10 VA typical

Protection Functions

Thermal: Overload (thermal memory), RTD‑based winding/bearing overtemperature

Electrical: Phase/ground overcurrent, unbalance, loss of load, reverse power, stall/locked rotor

Voltage/Frequency: Over/undervoltage, over/underfrequency, single‑phase protection

Mechanical: Vibration monitoring (analog inputs), start‑up failure detection

Trip Time: ≤200 ms (differential); ≤15 ms (instantaneous overcurrent)

I/O & Interfaces

RTD Inputs: 12 × 3‑wire (Pt100, Ni100/120, Cu10)

Analog Outputs: 4 × 4–20 mA, isolated

Digital Inputs: 16 opto‑isolated (dry/wet contact, ≤1 ms response)

Relay Outputs: 8 Form C (5 A / 250 VAC)

Communication: RS‑232 (front, programming), RS‑485 (Modbus RTU), Profibus‑DP (P option)

Display & User Interface

Display: 40‑character backlit LCD (enhanced)

Indicators: 12 LED (RUN, TRIP, ALARM, FAULT, SERVICE)

Keypad: Numeric/navigation for local programming; help key

Mechanical & Environmental

Dimensions: 296 mm H × 107 mm W × 205 mm D

Mounting: Panel mount (19” rack compatible)

Enclosure: Flame‑retardant plastic; IP50 (front), IP20 (overall)

Operating Temp: -40°C to +60°C

Storage Temp: -40°C to +85°C

Humidity: 5–95% non‑condensing

Certifications: UL, CE, CSA, IEC 60255, ATEX

Metering & Diagnostics

Metering: 3‑phase current/voltage, power, energy, frequency, PF, demand (0.5% accuracy)

Diagnostics: Event log (512 events), fault recorder (128‑cycle oscillography), pre‑trip data

Thermal Modeling: RTD biasing, load loss cooling curves, hot‑spot estimation

Motor Health Report: Graphical diagnostics for maintenance planning

Core Functions

Comprehensive Motor Protection: Guards against electrical faults, thermal overload, and mechanical issues (stall, vibration).

Precision Thermal Monitoring: 12 RTD inputs for winding/bearing temperature tracking and hot‑spot prediction.

High‑Voltage Compatibility: Wide‑range HI power for flexible substation integration.

Advanced Communications: Profibus‑DP + Modbus RTU for SCADA and DCS integration.

Enhanced Diagnostics: Oscillography, event logging, and motor health reports for root‑cause analysis.

Auto‑Configuration: Motor Settings Auto‑Configurator simplifies setup.

Applications

Industrial Motors: Medium‑to‑large three‑phase AC motors (LV/MV)

Oil & Gas: Pumps, compressors, fans, down‑hole pumps

Water Treatment: Blowers, mixers, high‑power pumps

Metallurgy: Rolling mills, conveyors, furnace motors

HVAC: Large chiller motors, air handlers

Mining: Conveyors, crushers, hoists

Usage & Maintenance

Installation: Panel‑mount; wire CT/VT, HI control power, RTDs, and communications.

Programming: Use front keypad or connect to EnerVista 369 software via RS‑232.

Configuration: Set CT/VT ratios, protection curves, RTD types, and I/O mapping.

Maintenance: Inspect terminals annually; update firmware; verify settings after system changes.

Note: 369 series is discontinued; replacement is GE Multilin 859 series.