GE SR469-P5-HI-A20-E
Product Description
The GE SR469 – P5 – HI – A20 – E is a sophisticated motor management relay crafted for medium – to – large – sized motors across diverse industrial applications. It offers an all – encompassing solution for motor protection, monitoring, and control.
This relay is equipped with an array of advanced protection functions. It can proficiently detect and respond to various abnormal conditions. For instance, it has reliable overload protection with customizable inverse – time characteristics. This means it can mimic the actual thermal behavior of the motor, providing optimal protection against over – current situations. Phase unbalance protection is another crucial feature. By constantly monitoring the current in each phase, it can quickly identify and take action when there are unequal current levels, which can otherwise lead to motor overheating and premature failure. Additionally, it provides under – voltage and over – voltage protection. Motors are sensitive to voltage fluctuations, and the SR469 – P5 – HI – A20 – E ensures they are safeguarded from voltages outside the normal operating range. Ground fault protection is also included, which is essential for isolating faults between the motor windings and the ground, preventing electrical hazards.
In terms of monitoring, the relay offers detailed diagnostic capabilities. It continuously monitors motor parameters such as current, voltage, and temperature. This real – time data is not only useful for detecting faults but also for predicting potential issues. For example, by analyzing the motor’s temperature trends over time, maintenance teams can anticipate when the motor might be at risk of overheating due to factors like increased load or inefficient cooling. The relay also has an event recorder that stores motor and system information, complete with a date and time stamp, each time a system event occurs. Up to 256 events can be recorded, which is extremely valuable for troubleshooting and maintenance purposes.
The SR469 – P5 – HI – A20 – E features a user – friendly interface. The enhanced 40 – character LCD display clearly shows important information such as motor status, fault messages, and real – time parameters. The dedicated input keypad allows operators to easily configure protection settings, view historical records, and access real – time motor data. For example, they can quickly adjust the overload protection thresholds or view past fault events.
Furthermore, this relay supports multiple communication protocols. It has Modbus RTU for reliable serial communication, which is widely used in industrial automation due to its simplicity. Modbus TCP enables high – speed Ethernet – based communication, facilitating seamless integration with networked systems. Profibus DP is also supported, making it suitable for use within Profibus networks, which are common in industrial control applications, especially in Europe. This wide range of communication options allows for easy integration with other control systems like programmable logic controllers (PLCs) and human – machine interfaces (HMIs), enabling remote monitoring and control.
Product Parameters
- Power Supply:
- AC: 70 – 265 VAC, with a frequency range of 48 – 62 Hz.
- DC: 90 – 300 VDC.
- Current Input: Rated for 5 A phase CT secondaries, capable of accurately measuring motor currents relevant to medium – to – large – sized motors.
- Voltage Input: Can handle phase – to – neutral voltages in the range of 1 – 120 VAC and phase – to – phase voltages from 1.73 – 208 VAC.
- Protection Functions:
- Overload protection with inverse – time characteristics for precise thermal – based over – current protection.
- Phase unbalance protection to detect and address unequal current distribution among phases.
- Under – voltage and over – voltage protection to shield motors from voltage deviations.
- Ground fault protection to isolate faults between motor windings and ground.
- Thermal overload protection, often based on motor heating models considering factors like ambient temperature and load.
- Torque protection to safeguard against abnormal torque conditions that could damage the motor or connected machinery.
- Stator differential protection to identify faults within the motor stator windings by comparing currents at different points.
- Communication Interfaces:
- Modbus RTU for serial communication in industrial automation.
- Modbus TCP for high – speed Ethernet – based data transfer and network integration.
- Profibus DP for communication within Profibus networks.
- Relay Outputs: Multiple programmable output relays are available for trip, alarm, and control functions. These can be configured to operate based on specific fault conditions or motor status changes.
- Analog Outputs: Equipped with 4 isolated 4 – 20 mA analog outputs. These can transmit measured values such as current, voltage, or power to other devices for further processing or monitoring.
- RTD Inputs: Supports 3 – wire RTD inputs, including common types like 100 – ohm platinum, 100 – ohm nickel, 120 – ohm nickel, and 10 – ohm copper. This allows for accurate motor temperature monitoring.
Product Specifications
- Model Number: SR469 – P5 – HI – A20 – E
- Manufacturer: General Electric (GE)
- Series: 469 Motor Management Relay
- Enclosure Rating: IP20 – X, providing basic protection against solid objects and limited protection against water splashing.
- Dimensions: Approximately 178 mm (height) × 130 mm (width) × 165 mm (depth), designed to fit standard industrial control cabinet spaces for easy installation.
- Weight: Around 2.5 kg, which is manageable for installation and handling in industrial settings.
- Operating Temperature Range: – 40 °C to + 60 °C, suitable for a wide variety of industrial environments, from cold storage areas to normal – temperature manufacturing plants.
- Storage Temperature Range: – 40 °C to + 85 °C, ensuring safe storage before installation.
- Humidity Range: Can withstand a relative humidity range of up to 90% non – condensing, making it suitable for use in environments with varying humidity levels without risk of moisture – related damage.
