Model 292B315A19 is a Westinghouse-originated timing delay relay module under Emerson Ovation DCS control system product line, belonging to standard 292 series plug-in industrial relay spare part made in USA. It is widely equipped in thermal power, nuclear power and petrochemical plant control cabinets, used for equipment sequential start-up control, safety interlock delay and circuit delayed trip logic signal conversion between DCS controller and field on-site auxiliary equipment.

This product adopts integral plug-in structure matching dedicated installation base of 292 series rack, built-in internal surge absorption, reverse connection and short-circuit protection circuit to resist strong electromagnetic interference inside closed industrial cabinet. Front panel is fitted with multiple LED indicator lamps to display power supply status, running action and delay completion status in real time, supporting long-term uninterrupted 24-hour continuous running under severe industrial ambient environment and complying with CE, UL and IEC EMC anti-interference industrial standards.

Standard rated coil working voltage supports DC48V and DC125V dual specifications for field optional configuration. The factory default adjustable delay time range is 0.5 second to 1 second, and customized delay parameters can be set according to actual site control requirements during ordering. Its internal switching contact is single-pole double-throw structure, with rated load capacity of 5A under AC250V alternating voltage or DC125V direct voltage working condition.

The module gets power supply through rack backplane wiring terminal with low static power consumption. Normal working ambient temperature ranges from 0 degree Celsius to 60 degree Celsius for cabinet installation environment, and permissible storage temperature spans minus 40 degree Celsius to positive 85 degree Celsius. Applicable working air humidity is kept between 5% and 95% relative humidity without condensed water inside the module body.

Overall outer dimension follows unified dimensional standard of Westinghouse 292 series module, which ensures seamless replacement installation with original old-version modules on existing equipment rack.

Main application scenarios cover Ovation DCS control loop of large-scale power station, boiler auxiliary interlock circuit, steam turbine auxiliary protection control loop and petrochemical process safety shutdown interlock system, serving as core delay logic component for on-site safety protection and sequential control.