Configured for comprehensive motor protection, real-time surveillance, and diagnostic control in industrial power systems, the GE Multilin 469-P1-HI-A20-E (469-P1-HI-A20-E Motor Management Relay) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• 469-P1-HI-A20-E: Advanced microprocesor-based motor management relay variant featuring a high-range control power supply, four analog output channels, nine opto-isolated digital inputs, and an enhanced 40-character LCD display interface.

Hardware Specifications

Profinet and Deterministic Network Processing

The internal digital signal processor executes high-speed sampling of motor phase currents, voltages, and thermal models to calculate real-time operating metrics and execute trip logic. Communication interfaces support deterministic network protocol integration, enabling remote supervisory control and sequence-of-events logging without interrupting primary protection functions. Hardware isolation barriers protect internal microelectronics from high-voltage transients and electromagnetic interference originating from heavy motor starter feeds.

Frequently Asked Questions

Q: Does this protective relay support live draw-out extraction while the auxiliary control power and current inputs are active?

A: Draw-out extraction is strictly restricted while the unit is energized; auxiliary supplies and current transformer shorting blocks must be fully secured before unlatching the chassis.

Q: How are analog output signals scaled for external monitoring equipment?

A: The four configurable analog outputs can be mapped via front-panel programming to represent motor load, temperature, or other critical parameters across 0 to 1 mA or 4 to 20 mA ranges.

Q: What mechanisms ensure reliable performance in corrosive industrial environments?

A: The internal electronic assemblies are protected with a specialized conformal coating to withstand high humidity and airborne contaminants.

Field Installation Guidelines

• Verify that all current transformer (CT) secondary circuits are short-circuited externally before servicing or withdrawing the relay from its draw-out case.
• Ensure that control power wiring and protective earth ground connections meet station standards to maintain noise immunity and personnel safety.
• Route communication cables and analog loop wiring through dedicated shielded conduits separated from high-voltage motor power leads.