The GE Multilin 469-P5-HI-A20-T motor management relay is a high-performance and highly reliable motor protection device, suitable for the monitoring, control and protection of medium and large-sized motors. It features comprehensive protection functions, advanced monitoring capabilities and flexible communication interfaces. Here is a detailed introduction about this module:
I. Core Functions
Comprehensive Motor Protection:
Provides protection functions such as overload, short circuit, undervoltage, overvoltage, voltage phase inversion, over-frequency, and under-frequency.
Includes differential protection function, using current transformers (CT) from both ends of the motor winding as input.
Supports thermal model protection, including overload curve, negative sequence imbalance/single-phase offset, RTD offset (thermal/cold motor compensation), etc.
Advanced Monitoring Capabilities:
Equipped with 12 RTD inputs for precise measurement of the actual temperature and hottest spot position of the motor, enabling more effective fault diagnosis and maintenance.
Provides complete power measurement functions, including A, V, W, var, VA, PF, Hz, Wh, varh, demand, etc.
Event Recording Function: Can store the latest 40 events. Stores 16 waveforms per trip occurrence.
Flexible Communication Interfaces:
Supports multiple communication protocols, such as Modbus RTU, Modbus TCP/IP, DeviceNet, etc.
Provides multiple ports, including 10Base-T Ethernet, RS485, RS232, etc., facilitating integration into existing industrial control systems.
Technical Specifications
Control power supply: 90-300VDC and 70-265VAC (48-62Hz).
Current input: Secondary side of 1A phase current transformer, secondary side of 5A phase.
Analog output: Four 4-20mA analog outputs.
Protection level: 20-X, capable of effectively resisting the intrusion of dust, moisture and other harmful substances.
Temperature detection: Supports RTD input (100Ω nickel, 120Ω nickel, 10Ω copper, 100Ω platinum).
Overvoltage category: II.
Insulation voltage: 300V.
Pollution level: 2.
Application scenario
Manufacturing: Used for motor protection and control on production lines to ensure the efficiency and consistency of the production process.
Energy industry: In scenarios such as power distribution, wind power, and solar power generation, it enables the monitoring, control, and optimization of the power system.
Other industrial fields: Applicable to various industrial application scenarios that require high reliability and stability in motor control.
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