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GE DS3820FEXD1A
1. Overview
GE DS3820FEXD1A is a digital relay protection device belonging to GE’s 8MW series, mainly used for distribution automation in substations. It adopts a modular design, which can realize the monitoring, protection and control of distribution lines, and support functions such as fault detection, alarm, isolation and recovery. This device is usually used in conjunction with other GE electrical equipment (such as circuit breakers, disconnectors) to realize the automation and digital management of the distribution network.
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2. Parameters
- Rated Voltage Level: Usually applicable to 10kV to 35kV distribution systems.
- Rated Current: Designed according to the scale of the distribution line, usually ranging from tens of amperes to hundreds of amperes.
- Response Time: Millisecond level (ms), which can quickly detect and clear faults.
- Communication Interface: Supports communication protocols such as IEC 61850 and DNP3, facilitating integration with SCADA systems or DMS systems.
- Operating Temperature Range: -25℃ to +70℃.
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3. Product Features
- Modular Design: Adopts a split structure, which is convenient for maintenance and component replacement.
- High Reliability: Equipped with multiple safety mechanisms such as overload protection, short-circuit protection and overvoltage protection.
- Intelligence: Supports remote monitoring, fault diagnosis and data recording functions.
- Strong Compatibility: Can be compatible with various types of electrical equipment and applicable to different distribution scenarios.
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4. Structure and Composition
- Control Unit: Responsible for logical operation, communication and command execution.
- I/O Unit: Connected to on-site electrical equipment (such as current transformers, voltage transformers, circuit breakers) to collect data and execute opening and closing operations.
- Communication Module: Used for network connection to realize data interaction with the upper system.
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5. Application Fields
- Distribution Network Automation: Used in places such as distribution transformers and line substations to realize remote monitoring and automatic control.
- Substation Protection: Used to protect distribution transformers, switchgear and lines, preventing power grid accidents caused by faults.
- Power Grid Operation and Maintenance: Through real-time data collection and analysis, it helps operation and maintenance personnel conduct power grid dispatching and fault troubleshooting.
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6. Installation and Maintenance
6.1 Installation
On-site survey by professional electrical engineers is required, and wiring and configuration shall be carried out according to the specific wiring scheme of the power grid. It is usually installed in the switch cabinet or the protection room of the substation.
6.2 Maintenance
GE DS3820FEXD1A is designed with a self-inspection function, which can monitor its own operating status. Maintenance personnel need to regularly check its work logs, perform firmware upgrades and parameter calibration to ensure the accuracy and stability of its operation.
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