GE 745-W2-P5-G5-HI-A-R-E-H Management Relay
GE 745-W2-P5-G5-HI-A-R-E-H
1. Main Technical Specifications
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Item
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Technical Parameters
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Control Power Supply
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90-300VDC; 70-265VAC @ 48-62Hz
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Operating Temperature
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-40°C to +60°C
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Storage Temperature
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-40°C to +80°C
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Relative Humidity
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≤95% (Non-condensing)
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Ingress Protection Rating
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IP40 (Front Panel), IP20 (Rear Panel)
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Rated Current Input
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5A per winding (5A available for ±½ and ⅔ windings)
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Measurement Accuracy
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0.2% (Power Quality Version)
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Sampling Rate
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1MHz (Power Quality Version)
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Weight
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Approx. 3 lbs / 1.36kg
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2. Product Features
2.1 Protection Functions
- Percentage Differential Protection: Core main protection function for transformers
- Overcurrent Protection: Covers phase current and neutral ground overcurrent protection
- Overexcitation Protection: Real-time monitoring of transformer overexcitation conditions
- Harmonic Monitoring: Supports monitoring of individual harmonics and total harmonic distortion (THD)
- Ground Fault Protection: Provides high-sensitivity ground fault detection capability
- Negative Sequence Overcurrent Protection: Protects transformers against unbalanced faults
- Frequency Protection: Implements under-frequency and over-frequency protection
2.2 Technical Characteristics
- FlexLogic™ Technology: Enhances system flexibility and reduces the demand for auxiliary components and field wiring
- Automatic CT Configuration: Dynamically corrects current transformer (CT) ratio mismatch errors
- Dual Winding Design: Equipped with dual-winding versions for each phase to adapt to diverse application scenarios
- Built-in Metering Function: Eliminates the need for additional auxiliary metering equipment and reduces overall operation costs
- Seven Transmitter Outputs: Programmable for multiple signal ranges including 4-20mA, 0-20mA, 1-10mA, and 0-1mA
2.3 User Interface
- 40-character backlit LCD display
- 20 LED indicator lights for status display
- Dedicated numeric keypad and menu control keys
- IRIG-B time synchronization input support
- RS232 serial communication interface
2.4 Communication Capabilities
- Standard Serial Interfaces: Equipped with RS232, RS485 and RS422 ports
- Optional Ethernet Port: Compliant with IEC 61850 communication protocol for substation automation
- Modbus Protocol Support: Compatible with Modbus RTU and Modbus TCP protocols
- Multi-relay System Configuration: Supports multi-device networking via RS485/RS422 connection
3. Structure and Composition
3.1 Physical Structure
- Modular Design: Standard industrial size, compatible with 19-inch rack mounting and DIN rail mounting
- Front Panel Layout: Integrates LCD display, LED indicators, input keypad and function control keys for intuitive operation
- Rear Terminal Block: Abundant connection terminals support flexible system configuration
- Logic Inputs: Maximum 16 logic input terminals (including D1-D8 and extended channels)
- Output Circuits: 5 trip output channels (TRIP 1-5) and 8 auxiliary output channels (AUXILIARY 6-8)
3.2 Main Components
- Current Input Module: Receives and processes CT signals from three transformer windings (WINDING 1/2/3)
- Logic Input Module: Collects switching quantity signals from D1-D8 and other extended logic inputs
- Output Contact Module: Executes trip actions and auxiliary signal output functions
- Control Power Module: Supports wide-range DC and AC power supply for stable device operation
- Communication Interface Module: Integrates RS232, RS485 and Ethernet ports for data transmission
- IRIG-B Interface: Specialized port for high-precision time synchronization
- RTD/Temperature Sensor Interface: Realizes transformer temperature monitoring and over-temperature protection
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- Email : sales5@xrjdcs.com
- Whatsapp/Mobile:+86 15359273791
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