Siemens 7UT86 Transformer

1.產(chǎn) 品 資 料 介 紹：

中文資料：

Siemens 7UT86 是一款變壓器保護(hù)繼電器，主要用于電力系統(tǒng)中的變壓器、電抗器和長(zhǎng)線路的保護(hù)。它基于數(shù)字繼電器技術(shù)，能夠提供高精度的差動(dòng)保護(hù)、過流保護(hù)和其他附加功能，以確保變壓器的安全運(yùn)行。

主要功能特點(diǎn)

• 差動(dòng)保護(hù)（87T）：利用變壓器兩側(cè)電流的比較來(lái)檢測(cè)內(nèi)部故障，具有高靈敏度和快速動(dòng)作特性。
• 過流保護(hù)（50/51）：檢測(cè)短路和過載情況，防止設(shè)備損壞。
• 勵(lì)磁涌流抑制：可區(qū)分正常勵(lì)磁涌流和實(shí)際故障電流，避免誤動(dòng)作。
• 零序保護(hù)（87N, 50N/51N）：用于檢測(cè)接地故障，提高系統(tǒng)安全性。
• 過負(fù)荷保護(hù)（49）：監(jiān)測(cè)變壓器負(fù)荷，防止過熱損壞。
• 遠(yuǎn)程通信與監(jiān)測(cè)：支持多種通信協(xié)議（如 IEC 61850），可與 SCADA 或 DCS 系統(tǒng)集成，實(shí)現(xiàn)遠(yuǎn)程監(jiān)控。

應(yīng)用領(lǐng)域

• 高壓/超高壓變電站：為大型電力變壓器提供全面保護(hù)，防止內(nèi)部短路、繞組故障等問題。
• 工業(yè)電網(wǎng)：用于鋼鐵、化工、石油等行業(yè)的大型變電系統(tǒng)，確保電力設(shè)備的穩(wěn)定運(yùn)行。
• 可再生能源：在風(fēng)電、光伏等新能源場(chǎng)景中，對(duì)升壓變壓器提供保護(hù)，確保電能輸送可靠性。

Siemens 7UT86 以其高精度保護(hù)功能和強(qiáng)大的通信能力，被廣泛應(yīng)用于現(xiàn)代電力系統(tǒng)和工業(yè)配電系統(tǒng)中。

英文資料：

Siemens 7UT86 is a transformer protection relay mainly used for the protection of transformers, reactors, and long lines in power systems. It is based on digital relay technology and can provide high-precision differential protection, overcurrent protection, and other additional functions to ensure the safe operation of transformers.

Main functional features

Differential protection (87T): uses the comparison of current on both sides of the transformer to detect internal faults, with high sensitivity and fast action characteristics.

Overcurrent protection (50/51): detects short circuits and overloads to prevent equipment damage.

Excitation inrush current suppression: It can distinguish between normal excitation inrush current and actual fault current to avoid misoperation.

Zero sequence protection (87N, 50N/51N): used to detect grounding faults and improve system safety.

Overload protection (49): Monitor transformer load to prevent overheating and damage.

Remote communication and monitoring: Supports multiple communication protocols (such as IEC 61850), can be integrated with SCADA or DCS systems, and achieve remote monitoring.

application area 

High voltage/ultra-high voltage substation: provides comprehensive protection for large power transformers to prevent internal short circuits, winding failures, and other issues.

Industrial power grid: a large-scale substation system used in industries such as steel, chemical, and petroleum to ensure the stable operation of power equipment.

Renewable energy: In new energy scenarios such as wind power and photovoltaics, protection is provided for step-up transformers to ensure reliable power transmission.

Siemens 7UT86 is widely used in modern power systems and industrial distribution systems due to its high-precision protection function and powerful communication capabilities.

2.產(chǎn)      品      展      示      

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