About the 239
- Manufacturer: General Electric.
- Purpose: Designed to fully protect three-phase AC motors against damaging conditions.
- Protective Capabilities:
- Protects motors.
- Optionally protects mechanical equipment used with the unit.
- Sounds an alarm prior to damage if a potential process malfunction occurs.
- Cost Reduction: Helps lower and assist with installation costs through an aerodynamic design.
- Enhanced Protection: Can incorporate other thermal models for enhanced protection.
- Flexibility: Allows for flexible settings due to a collective group of setpoints.
- Diagnostic Issues: If diagnostic issues occur, verification is needed to correct relay operation during routine motor maintenance.
Hardware Specifications
- Testing: Comes with built-in simulation features for simple testing.
- Monitoring Capabilities:
- Temperature asset monitoring.
- Alarm.
- Trip.
- Memory: Separate flash memory.
- Fault Protection:
- Two primary ground faults.
- Thermal overload with fifteen selectable curves.
- Option for single-phasing and current unbalance.
- Motor Control/Supervision:
- Multi-speed motor protection.
- Motor start supervision.
- Display: Equipped with a display that can focus on temperature, current, and status.
- Event Logging: Trip record feature can save up to the last five events.
Frequently Asked Questions about 239
What is the mechanical jam trip feature of the GE Multilin 239 motor protection relay?
The motor protection relay 239 GE Multilin product has a mechanical jam trip feature that allows protection of various parts of a motor in the event that there is a jam. The saw mill cutters, fans, and other various parts are protected by this motor protection relay system in the event of a mechanical jam.
What are the various order codes that I see on the end of the Multilin 239 part number and what do they mean?
The various order codes that appear added after the parent GE 239 motor protection relay part afford different options to the motor protection relay. For example the H order code signifies an option for a harsh environment conformal coating to be included with the 239 motor protection relay. Similarly the AN order code includes a single isolated analog output with three mA varieties. Additionally this AN order code is programmable with the output parameter of the 239 motor protection relay.
How many relays are needed in order to protect each motor with thee 239 GE Multilin motor protection relay?
Typically one 239 Multilin motor protection GE relay is necessary to protect each motor. If the over temporature option is selected then a maximum of three RTDs are able to be monitored. The purpose of the motor protection relay installation is to protect and monitor motors in order to reduce time that production is down stemming from process problems or other malfunctions.
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