GE Multilin 469 SR469-P5-HI-A20 Motor Protection and Management Relay
SR469-P5-HI-A20
GE Multilin 469 SR469-P5-HI-A20 Motor Protection and Management Relay
About the SR469-P5-HI-A20
The SR469-P5-HI-A20 is a 469 Motor Management Relay from GE Multilin
It’s available as new surplus or reconditioned used inventory from AX Control
Designed for use with medium voltage motors, offering robust motor protection
Features draw-out construction for quick replacement and is field-upgradable
Technical Specifications & Capabilities
Provides four 4-20 mA analog outputs
It is CE marked, indicating compliance with European safety standards
Equipped with standard 5A phase CT secondaries
Control power is rated at 90-300 VDC, 70-265 VAC @ 48-62 Hz
Includes two ground CT inputs: one for GE power management and one for a general ground CT
VT inputs accommodate VTs in either delta or wye configuration
The unit comes with a case
Motor Thermal Modeling & Protection
Offers advanced motor thermal modeling capabilities, including:
RTD biasing
SR469-P5-HI-A20
Motor cooling time constants
Start inhibit and emergency restarts
Unbalance biasing
Overload curves
Hot and cold safe stall ratio
Detailed information on these features can be found in original GE Multilin manuals
User Interface & Design
Features a front faceplate with:
An LCD display
Several areas of LED indicators
A dedicated keypad for inputs
A communications port
SR469-P5-HI-A20
The unit’s sides are designed for airflow, ensuring it stays within the proper operating temperature range
Additional information is available in GE manuals and product user guides
Frequently Asked Questions about SR469-P5-HI-A20
For this SR469-P5-HI-A20 GE Motor management relay, should the resistance temperature detector biasing be enabled?
By enabling the resistance temperature detector biasing, the temperature of the stator sensors will be enabled and included in the calculations for the thermal capacity.
The loss of data for cooling and high temperatures that are unusual can happen because the resistance temperature detector biasing is an element that protects and backs up the relay. These measures of temperatures are used in bias and can be changed for the thermal capacity value that is stored in this relay.