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GE 239

GE 239 motor protection relay
1、 Technical specifications
The GE 239 motor protection relay, model 239-RTD-AN, is a high-performance motor protection device produced by GE Multilin. Its main technical specifications include:
Rated value of fuse: 5 x 20 mm, 250 V, 2.5 A
Insulation voltage: 300 V
Overload curve: With 15 optional curves, it can adapt to motor protection under different load conditions
Trip time: accuracy can reach ± 1% of the displayed value
Programmable output: supports programming output of parameters such as thermal capacity, full load percentage, and phase current
Transmission: Supports 50 MHz/15 W transmission
Short circuit and ground trip: S/C trip Lvl 1 to 11 x CT PRI/closed
Storage temperature range: -40 to 158 ° F
Unbalanced delay: adjustable from 0 to 60 seconds

Detailed content

2、 Functional characteristics
Motor protection: GE 239 is mainly used to protect AC motors, especially three-phase AC motors, to avoid motor damage caused by electrical faults.
Multifunctional: In addition to motor protection, it also has functions such as protecting related mechanical equipment, issuing alarms before process failures cause damage, diagnosing problems after faults occur, and verifying correct relay operation during daily maintenance.
High reliability: Adopting advanced processor architecture and multi-core design, providing powerful computing power, ensuring stable operation of equipment under various working conditions.
Easy to operate: Equipped with a clear front LCD display screen, allowing users to easily view data such as status, temperature, and current.
Communication interface: Supports ModBus serial communication interface, making it easy for the entire factory’s motor starters to connect to the central control/monitoring system, achieving continuous monitoring and rapid fault diagnosis.
Scalability: Supports on-site updates of options and/or MODs, making it easy for users to expand their functionality according to their actual needs.
3、 Application scenarios
The GE 239 motor protection relay has become an ideal choice for motor and equipment protection in various applications due to its diverse functions and simple programming control. Typical application scenarios include:
Pump and fan protection: Using undercurrent function to detect suction loss or flow loss of pumps and fans, providing mechanical protection.
Compressor protection: Use a start timer to provide electrical protection for the compressor motor, preventing excessive running time caused by opening the outlet.
Application in harsh environments: A conformal coating design suitable for harsh environments, ensuring stable operation of equipment in harsh environments.
The GE 239 motor protection relay has become a leader in the field of motor protection due to its advanced technical specifications, rich functional characteristics, and wide application scenarios.

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