Transformer Monitoring Device

Product Overview

Electric transformers are one of the key components of the power system, and their safe and stable operation is crucial for the safety of the power system. When transformers are operating normally, their cores and metal brackets must be reliably grounded. Otherwise, the core may develop a floating voltage to the ground, or multiple points of grounding may cause overheating faults, posing a serious threat to the transformer and the power grid. Monitoring the grounding current of the core can directly reflect the presence of multiple grounding points in the transformer core. With the advancement of automation, using online monitoring devices to monitor the grounding current of transformer cores offers the advantages of good real-time performance and high accuracy, enabling timely and accurate detection of fault risks, and avoiding the waste of manpower and resources caused by manual inspections, as well as the safety risks due to poor timeliness.

　　ED8040The type transformer core grounding current on-line monitoring device effectively monitors the core grounding current in real-time, boasting high accuracy, excellent stability, and strong functionality. It can be integrated with the electrical equipment condition evaluation system for condition maintenance, assessment, early warning, and risk analysis, thereby effectively enhancing the safety operation level of transformers.

    ED8040The core grounding current of the type transformer is isolated and transformed into a small signal through a through-core current transformer. After signal conversion, filtering, and amplification by the调理 circuit, the analog-to-digital converter converts it into a digital signal. The microprocessor then performs digital filtering and computation to obtain the core grounding current. The local display interface can display the real-time grounding current and has an alarm function when it exceeds the limit.LEDDirective; the device can be isolatedRS485/CAN/GSM/GPRSCommunications interface (selected upon order) enables real-time backend communication with status monitoring systems.

　　ED8040The type transformer core grounding current online monitoring device features an interface for a current limiting resistor switching control unit. When the current exceeds the set limit, the device automatically steps up the current limiting resistor in stages.4The emergency measure involves reducing ground current by adjusting the resistance value, automatically removing the current-limiting resistor when the current falls below the set limit.

Application Scenario

　　ED8040The type transformer core grounding current online monitoring device can adapt to monitoring transformers under various environmental conditions. According to different application requirements, the device can be configured to connect with the integrated status monitoring system of substation equipment or operate independently.GSMText messaging for monitoring, or a combination of both applications.