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　　Product Description

　　Shanxi Runsheng Import and Export Co., Ltd. provides various GE Multilin relays, including SR469-P1-HI-A1-E, which is a part of the SR 469 relay series designed specifically for medium voltage motors. The SR469-P1-HI-A1-E part number is often misread as 469-PI-H1-AI-E. This device provides motor protection and voltage related overload curves, and its pull-out structure allows for quick replacement. This relay is economical and efficient, providing information access through serial ports such as RS485 and RS232, and has firmware that can be upgraded on-site.https://www.axcontroler.com/Product/

　　SR469-P1-HI-A1-E has a 1 Amp phase CT secondary, 90-300 VDC/70-265 VAC control power supply, 0-1 mA analog output, and an enhanced display screen. The 40 character front display screen can display set values and value messages. If the device trips or encounters an alarm situation, a diagnostic message will be displayed. The complex front panel includes LED status indicators, numeric keypad, control and programming keys, program port interfaces, value keys, and pull-out handles, which can be sealed to prevent unauthorized removal.

　　GE Multilin relays provide advanced functions such as oscilloscopes, event recorders, standard communication ports, and motor diagnostics. This relay is compatible with the EnerVista software suite, allowing users to integrate information into local HMI or SCADA systems and maintain the relay.

　　Feeder protection system

　　The 750/760 Feeder Protection System is a digital relay intended for the management and primary protection and control of distribution feeders. This easy to use relay provides comprehensive protection functions for feeders and back up protection for bus, transformers and transmission lines in a draw out construction and at a reduced product life cycle cost.

　　Communications

　　The 750/760 is equipped with three standard serial communications ports, one RS232 located in the front panel, and two RS485/RS422 in the rear of the relay. A rear Ethernet port is also available as an optional feature. The front panel port allows easy local computer access. The rear ports provide remote communications or connection to a DCS, SCADA, or PLC. The baud rate of all the serial ports is variable from 300 to 19,200 bps. The optional Ethernet port can be used to connect the 750/760 to 10 Mbps Ethernet networks. The 750/760 supports ModBus® RTU, DNP3.0 Level 2, and ModBus RTU TCP/IP protocols. The three serial ports support ModBus RTU protocol, while any one of the two rear ports but not both can be configured to support DNP 3.0 Level 2. The optional Ethernet port supports ModBus RTU via TCP/IP protocol. The communication system of the 750/760 is designed to allow simultaneous communication via all ports. Using Ethernet as the physical media to integrate the 750/760 to Local or Wide Area Networks, replaces a multidrop-wired network (e.g., serial Modbus®), and eliminates expensive leased or dial-up connections, reducing monthly operating costs.

　EnerVista Software

　　The EnerVista™ Suite is an industry-leading set of software programs that simplifies every aspect of using the 750/760 relay. The EnerVista™ suite provides all the tools to monitor the status of your protected asset, maintain the relay, and integrate information measured by the 750 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the 750 Setup software included with every 750 relay, to carry out postmortem event analysis to ensure proper protection system operation.

　　Common questions about SR469-P1-HI-A1-E

　　Why does it take some time to start the GE SR469-P1-HI-A1-E motor management relay?

　　If there is still some time before starting the GE SR469-P1-HI-A1-E motor management relay, the motor should specify the time between motor starts to the manufacturer. The information provided is to ensure that the GE motor management relay is not disabled. When you obtain this information, you should provide the programming of the motor data sheet in a timely manner.

　　What should the stator resistance temperature detector on the SR469-P1-HI-A1-E Ge motor management relay be set to?

　　The setting of the stator resistance temperature detector on the GE motor management relay should always be set to a trip level equal to or lower than the maximum rated insulation temperature of the relay. For Class F insulation with a rated temperature of 155 degrees Celsius, the temperature of the trip stage stator resistance temperature detector should be set between 140 degrees Celsius and 155 degrees Celsius, but the maximum is 155 degrees Celsius. The alarm of the resistance temperature detector should issue a warning that the motor temperature has risen above 155 degrees Celsius.

　　Should the temperature of the bearing resistance temperature detector be evaluated when the SR469-P1-HI-A1-E relay triggers an alarm?

　　Yes, as the bearing resistance temperature detector on the SR469-P1-HI-A1-E relay trips, the alarm determines that a specific bearing manufacturer is evaluating the temperature.

　　Comment on SR469-P1-HI-A1-E

　　Although SR469-P1-HI-A1-E has almost no operational issues, we noticed that the main failure point is the durability of the casing. The locking mechanism of the box door is prone to excessive force without realizing it, causing it to break.

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