Description
The General Electric (GE) Multilin 469-P1-HI-A20 is a microprocessor-based digital protection and management relay designed specifically for medium- and large-sized AC motors. It provides comprehensive thermal model protection, current-based fault detection, voltage monitoring, and advanced statistical diagnostics to prevent premature motor failure and minimize unscheduled downtime.
Supply Status and Commercial Terms
- Condition: New Surplus / Factory Sealed
- Availability: In stock for immediate dispatch
- Standard Warranty: 12 months from date of shipment
- Lead Time: 1 to 2 business days for standard dispatch
- Pricing Note: Listed price is indicative. Price subject to market conditions; contact us for a firm quote.
Technical Specifications
| Parameter | Value |
| Manufacturer | General Electric (GE Multilin) |
| Product Type | Motor Protection Relay |
| Model Code / Catalog Number | 469-P1-HI-A20 |
| Phase CT Inputs | 5 A secondary (standard for P1 designation) |
| Control Power Supply (HI) | 90–300 V DC / 70–265 V AC (High range) |
| Analog Outputs | 4 to 20 mA outputs (A20 option variant for process recording) |
| Communication Ports | Front RS232 port, Rear RS485 port (Modbus RTU / DNP 3.0 protocol support) |
| Operating Temperature | -40 to +60 °C |
| Enclosure Type | Drawout case design for surface or semi-flush panel mounting |
| Conformity / Standards | CE, UL, CSA, IEC 60255 compliance (verify with OEM datasheet) |
Engineering and Field Deployment Notes
When retrofitting or commissioning the 469-P1-HI-A20 relay in motor control centers (MCCs), correct configuration of the thermal overload model and CT inputs is critical for asset protection.
Integration and Compatibility
- Current Transformer (CT) Matching: Ensure the main phase CT secondary matches the relay rating (5 A secondary for the P1 configuration). Mismatched ratios will result in severe measurement errors and false thermal trips.
- Communication Setup: The rear RS485 port supports Modbus RTU, allowing direct integration into plant Distributed Control Systems (DCS) or Supervisory Control and Data Acquisition (SCADA) networks. Set correct baud rates and station addresses using EnerVista 469 Setup software.
- Drawout Mechanism: The relay features a drawout construction. Always isolate control and auxiliary power before extracting the internal chassis to prevent arc flash or internal circuit damage.
Frequently Asked Questions
What do the suffix codes (P1, HI, A20) designate on this model?
- P1: Indicates 5 A secondary phase current transformers.
- HI: Specifies the high-range control power supply (90–300 V DC / 70–265 V AC).
- A20: Denotes the analog output option configuration (typically four 4–20 mA outputs with isolated channels).
What software is required to program the 469 relay?
Configuration, event retrieval, and oscillography analysis are performed using GE’s EnerVista 469 Setup software via the front-panel RS232 port or rear communication links.
Can the relay protect against unbalance and phase loss?
Yes, the 469 includes dedicated elements for current unbalance, phase reversal, negative sequence current tracking, and dynamic thermal capacity tracking to protect against single-phasing conditions.
