GE generator protection relays support 5A phase CT secondary coils, control power supply range of 90-300VDC or 70-265VAC (48-62Hz), analog output 4-20mA, suitable for wide voltage environments, and integrate overcurrent, overvoltage, undervoltage, transient, ground fault, deviation protection and differential protection. They can detect current/voltage abnormalities, short circuits, phase loss and temperature changes (such as stator/bearing RTD monitoring).

　　Many products are not yet listed. Please contact us for more product information.

　　If the product model differs from the displayed image, the model number shall prevail. Please contact us for specific product images; we will arrange to take photos in our warehouse for confirmation.

　　We have 76 shared warehouses worldwide, so it may sometimes take several hours to return an accurate product. We apologize for the inconvenience. Of course, we will respond to your inquiries as soon as possible.

　　Other names for SD-98762:

　　Relay Protection Device SD-98762

　　SD-98762 Multi-line Relay

　　Generator Management Relay SD-98762

　　Product Positioning and Core Features

　　Electrical Specifications: Supports 5A phase CT secondary coil, control power supply range 90-300VDC or 70-265VAC (48-62Hz), analog output 4-20mA, suitable for wide voltage environments.

　　Protection Functions: Integrated overcurrent, overvoltage, undervoltage, transient, ground fault, deviation protection, and differential protection; capable of detecting abnormal current/voltage, short circuit, phase loss, and temperature changes (e.g., stator/bearing RTD monitoring).

　　Display and Operation: Equipped with a 40-character enhanced LCD display, supporting local diagnostic information viewing; the front panel includes RS-232/RS-485 communication ports (baud rate 9600-19200), a numeric keypad, and status indicator lights for easy on-site debugging.

　　Communication Capabilities: Compatible with Modbus RTU, DNP 3.0, and IEC 61850 protocols, supporting remote monitoring and system integration.

　　Environmental Adaptability: Complies with EN60255-5 and IEC61000-4 series electromagnetic compatibility standards, featuring RF interference immunity, surge protection, and IP54 protection rating, suitable for harsh environments (such as chemical corrosion, high humidity, and vibration scenarios).

　　Technical Parameters:

　　Control Power Supply: 90-300V DC / 70-265V AC (48-62Hz), supports a wide voltage range.

　　Analog Output: 4-20mA, compatible with industrial standard signals.

　　Protection Level: Complies with IEC60529, EN60255, etc., with immunity to electromagnetic interference (EMI/RFI), surge, and electrostatic discharge (ESD).

　　Protection Functions and Control Capabilities

　　Core Protection:

　　Overcurrent/overvoltage/undervoltage protection, transient fault detection (such as voltage descent/interruption), ground fault, deviation current protection.

　　Stator differential protection, 100% stator ground fault protection (through third harmonic adaptive), thermal and vibration monitoring (RTD input), negative sequence overcurrent protection.

　　Reverse power, loss of excitation, over-excitation, distance backup protection, supports circuit breaker fault detection and rapid isolation.

　　Control Functions:

　　Automatic generator start/stop, synchronization control, and circuit breaker status monitoring.

　　Supports IRIG-B time synchronization, enabling event logging, waveform capture, and data recording, enhancing fault diagnosis capabilities.

　　Communication and Interfaces

　　Protocol Support: Modbus RTU/TCP/IP, IEC 61850, DNP 3.0 Level 2, and other industry standard protocols.

　　Hardware Interfaces: RS232 (9600-19200bps), RS485, 10BaseT Ethernet, supporting multi-device networking and remote monitoring.

　　Expansion Capabilities: Supports 12 RTD inputs, 4 analog sensor inputs (vibration/velocity), 7 programmable digital inputs, and 6 output relays.

　　Application Scenarios and Advantages

　　Typical Applications: High-voltage power grid protection (substations, power plants, transmission and distribution lines), small and medium-sized synchronous/induction generators (25/50/60Hz), and main/backup protection for combined heat and power systems.

　　Structural Advantages: Drawer-style design facilitates maintenance; front panel integrates status indicator lights, numeric keypad, and programming keys (reset/menu/value keys), supporting local parameter setting and status monitoring.

　　Environmental Adaptability: Complies with IEC60068-2 series standards, withstands extreme temperatures, humidity, and vibration; optional conformal coating for harsh chemical environments.

　　Performs exceptionally well in chemical and other scenarios requiring extremely high power stability.

　　Extended Functions: Supports power metering, circuit breaker fault monitoring, and synchronous generator management (25/50/60Hz), and allows PC-side programming and parameter configuration via EnerVista software.

　　Installation and Maintenance: Features a pull-out housing design, supporting refurbishment and upgrades; built-in self-diagnostic function monitors relay status in real time and provides early warnings of potential faults.

　　Additional Information:

　　Software Support: Comes with EnerVista software for real-time monitoring, data archiving, waveform simulation, and setpoint verification; supports integration with SCADA/DCS systems.

　　Certifications and Standards: Certified for safety and electromagnetic compatibility, including UL508, UL C22.2-14, and IEC61000-4 series, ensuring global applicability.

　　Maintenance Recommendations: Regularly check CT/VT inputs, RTD connections, and communication links. Use official tools for parameter calibration and firmware updates.

　　All products on this website are special products, and market prices are constantly fluctuating.

　　Please refer to customer service for a quote, as the price may not be accurate for new products.

　　Please confirm the model, product, price, and other detailed information with customer service before placing an order. This website is currently in use.

　　New products are available for sale; please contact customer service for further information.

Recommended related products:
GE SR489-P5-HI-A20-E
GE SR465-P5-HI-A20
GE SR469-P5-H-A20-T
GE SR469-P5-HI-A20-E
GE SR489-P5-LO-A20
GE SR489-P5-HI-A20
GE SR489-P5-HI-A20-E
GE SR489-P5-LO-A20-E
GE SR489-P5-L0-A20-E
GE SR745-W2-P1-G1-HI-A-L-R
GE SR745-W2-P1-G1-HI-A-L-R-E
GE SR745-W2-P1-G1-HI-E-H
GE SR745-W2-P5-G5-HI
GE SR750-P5-G1-S1-HI-A20-R
More......