GE SR469-P5-HI-A20-T

Description

Technical Specifications

• CT Input: 5 A phase CT secondary; 1 A/5 A switchable; high-impedance (HI) design
• VT Input: Voltage transformer input, ratio 1.00–150.00:1 (0.01 steps); delta/star configurable
• Control Power: 90–300 V DC, 70–265 V AC (48–62 Hz); universal input
• Analog Outputs: 4 × 4–20 mA (isolated, 1200 Ω burden)
• RTD Inputs: 6 channels (100Ω Pt, 120Ω Ni, 10Ω Cu); 5 mA sensing current
• Digital Inputs: 8 isolated (24 V DC logic)
• Digital Outputs: 6 relay outputs (250 V AC, 5 A resistive; 30 V DC, 5 A)
• Communication Ports:
  • Front: 1 × RS-232 (9600–19200 baud, programming)
  • Rear: 2 × RS-485 (Modbus RTU, half-duplex)
  • Optional: 10BaseT Ethernet (Modbus TCP)
• Display: 40-digit backlit LCD; LED status indicators; numeric keypad
• Operating Temperature: -20°C to +70°C (-4°F to +158°F)
• Storage Temperature: -40°C to +85°C (-40°F to +185°F)
• Humidity: 5%–95% (non-condensing)
• Enclosure Rating: IP20 (dust-protected)
• Coating: Conformal acrylic coating (full PCB coverage)
• Dimensions (H×W×D): 200 mm × 150 mm × 100 mm (7.9 in × 5.9 in × 3.9 in)
• Weight: 2.5 kg (5.5 lbs)
• Certifications: UL, CSA, CE, IEC 60947-4-1 compliant

Key Features

1. Comprehensive Motor Protection: Integrates thermal overload (IEC 60947-4-1 inverse time), short circuit (instantaneous ≤10 ms), phase loss/imbalance (5%–50% adjustable), stall (2–10 × rated current), ground fault (0.1–10 A), overvoltage/undervoltage (70%–130% rated), and locked rotor protection。
2. High-Impedance (HI) Design: Minimizes CT burden (>500 kΩ) for accurate low-current measurement and reduced CT saturation risk。
3. Precision RTD Temperature Monitoring: Six RTD inputs measure stator winding, bearing, and ambient temperatures; enables hot-spot detection and thermal modeling for overload prevention。
4. Advanced Metering & Diagnostics: Measures 3-phase current, voltage, power, power factor, frequency, and harmonics; captures fault history, event logs, and motor start/run statistics。
5. Conformal Coating (T-Suffix): Full PCB acrylic coating protects against dust, moisture, corrosive gases, and vibration for operation in chemical, mining, and coastal environments。
6. Flexible Communication: Supports Modbus RTU/TCP for seamless integration with PLC, DCS, and SCADA systems; front RS-232 enables local configuration via EnerVista 469 software。
7. User-Friendly Interface: Backlit LCD displays real-time data, fault messages, and settings; LED indicators for power, run, trip, and alarm status; tactile keypad for parameter adjustment。
8. Field-Upgradable & Draw-Out Construction: Hot-swappable design allows quick replacement without system shutdown; firmware upgradable via communication ports。
9. Motor Thermal Modeling: Incorporates RTD bias, cooling time constant, start inhibition, and emergency restart logic for adaptive thermal protection。
10. Wide Environmental Tolerance: Operates reliably from -20°C to +70°C, supporting extreme industrial and outdoor installations。

Application Scenarios

• Oil & Gas: Protects MV/LV motors for pumps, compressors, and fans in refineries, offshore platforms, and pipelines。
• Power Generation: Used in thermal, hydro, and renewable power plants for boiler feed pumps, cooling tower fans, and conveyor motors。
• Mining & Metals: Deployed in mines, steel mills, and smelters for crushers, conveyors, hoists, and rolling mills in dusty, humid environments。
• Water & Wastewater: Controls and protects large pump motors in treatment plants, water distribution systems, and desalination facilities。
• Chemical & Pharmaceutical: Operates in corrosive, high-humidity environments for mixers, agitators, and process compressors。
• HVAC & Building Automation: Manages large fan and pump motors in commercial buildings, data centers, and airports。

Functional Overview