GE Multilin 469-P1-HI-A20-E Motor Management Relay

Configured for comprehensive motor protection and real-time surveillance 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 microprocessor-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. Firmware flash compatibility ensures structured update paths for operational protocol enhancements.

Frequently Asked Questions

Q: What is the auxiliary control power supply range supported by the hardware?

A: The unit operates on a universal control supply input rated at 90 to 300 V DC or 70 to 265 V AC at 48 to 62 Hz.

Q: How are analog output loops configured on this module variant?

A: The relay provides four independent analog output channels configurable for either 0 to 1 mA or 4 to 20 mA scaling loops.

Q: Does the enclosure support standard draw-out maintenance procedures?

A: Yes, the unit utilizes the standard Multilin 469 draw-out case form factor, permitting internal module extraction while maintaining backplane terminal integrity.

Field Installation Guidelines

Ensure proper chassis grounding via the designated protective earth stud prior to auxiliary power energization. Route all current transformer (CT) and potential transformer (PT) secondary circuits away from high-voltage power cabling to minimize electromagnetic coupling. Verify control supply voltage levels against the nameplate rating before closing supply breakers. Torque all terminal block fasteners to manufacturer-specified limits to prevent high-resistance contact faults in vibration-prone industrial environments.