Technical Parameters
- Part Number: 469-P5-HI-A20
- Manufacturer: GE Multilin
- Current Inputs: 5A Secondary CTs (P5)
- Control Power: 88–300 VDC / 70–265 VAC (HI Option)
- Analog Outputs: 4–20 mA (A20)
- Frequency: 50/60 Hz
- Communications: RS232, RS485 (Modbus RTU), Optional Ethernet
- Motor Protection: Thermal Model, Locked Rotor, Mechanical Jam, Undercurrent, Ground Fault, RTD Inputs (12)
Product Description
The GE Multilin 469-P5-HI-A20 is a comprehensive digital motor management relay designed for the protection, control, and monitoring of medium and large horsepower motors. It integrates advanced thermal modeling with specific motor-related features like start-inhibit, emergency restart, and complex bearing/stator temperature monitoring via its 12 RTD inputs. This specific configuration features 5A CT inputs and a “High” voltage control power supply, making it compatible with the majority of industrial substation environments.
Application Areas
- Heavy Industry: Protection for large pumps, fans, and compressors in mining and chemical plants.
- Water Treatment: Managing high-capacity intake and distribution pumps.
- Oil & Gas: Control and monitoring of critical induction and synchronous motors.
- Power Generation: Safeguarding auxiliary motors and cooling systems in power plants.
Product Specifications
- Weight: 3.40 kg
- Dimensions: 225 mm x 185 mm x 175 mm (H x W x D)
- Country of Origin: Canada
- Mounting: Draw-out construction for simplified maintenance and replacement.
Operating Precautions
- CT Configuration: Ensure the Phase CT primary and secondary ratios are correctly entered into the settings menu to avoid false overcurrent trips or failure to trip.
- Thermal Modeling: The thermal limit curves must be carefully matched to the motor manufacturer’s safe stall time (hot and cold) to ensure the motor is protected without nuisance tripping.
- RTD Wiring: Use shielded, three-wire RTD connections to minimize noise and ensure accurate temperature readings for bearing and stator protection.
- Draw-out Safety: Before removing the relay from the case, ensure the “CT Shorting” mechanism is functioning to prevent high-voltage arcing on the CT secondaries.
Recommended Similar Products
| Model Number | Product Description | Current Input |
| 469-P1-HI-A20 | Motor Management Relay | 1A CT Input |
| 369-HI-R-0-0-0 | Basic Motor Protection | 1A/5A Selectable |
| 869-G-P5-G5-HI | Advanced Modern Motor Relay | Multi-Functional |
| 469-P5-LO-A20 | Motor Relay (Low Voltage Power) | 24-48 VDC |
| SR469-CASE | Replacement Draw-out Case | Spare Part |
