Deif DGU-2 差动保护装置是丹麦 DEIF 公司推出的一款专业电力保护设备，主要应用于发电机、变压器等关键电力设备的差动保护，确保电力系统安全稳定运行。

一、产品特点

高精度电流检测

DGU-2 差动保护装置采用高精度电流互感器（CT）和先进的数字信号处理技术，能够实时、准确地监测设备电流变化，确保差动保护的灵敏度和可靠性。

快速故障响应

装置具备高速的故障检测和响应能力，可在毫秒级时间内识别并切除故障，有效防止设备损坏和事故扩大。

灵活的配置与参数设置

用户可根据具体应用需求，灵活配置保护功能、动作门槛值、延时时间等参数，满足不同场景的定制化需求。

全面的保护功能

除差动保护外，DGU-2 还集成过流、过载、接地故障等多种保护功能，提供全方位的设备保护。

友好的人机界面

装置配备直观的操作界面和显示模块，支持本地参数设置、状态监测和故障记录查询，便于用户操作和维护。

高可靠性与稳定性

采用工业级元器件和冗余设计，确保装置在恶劣环境下长期稳定运行，减少维护成本。

二、功能优势

差动保护功能

通过比较设备两侧电流的矢量差，识别内部故障（如绕组短路、接地故障等），并快速切断故障回路，保护设备安全。

谐波抑制与抗干扰能力

内置先进的滤波算法，有效抑制谐波干扰，确保保护动作的准确性。

通信与监控功能

支持 Modbus、IEC 61850 等多种通信协议，可与上位机或监控系统集成，实现远程监控和数据传输。

故障记录与分析

装置可记录故障发生时的电流、电压波形及动作时间，为故障分析提供详细数据支持。

三、应用场景

DGU-2 差动保护装置广泛应用于以下领域：

发电厂：保护发电机、变压器等核心设备。

工业电力系统：保护大型电动机、变频器等关键负载。

新能源领域：适用于风力发电机、光伏逆变器等设备的保护。

数据中心与基础设施：保障供电系统的可靠性和连续性。

四、技术参数（参考典型规格）

参数 规格

额定电流 1A/5A（可定制）

动作时间 <20ms（典型值）

精度等级 0.2S（电流测量）

通信接口 RS485、以太网、IEC 61850

工作温度 -25°C 至 +70°C

防护等级 IP54（可选 IP65）

五、安装与维护

安装：需由专业技术人员按照说明书进行安装，确保电流互感器极性正确，二次回路接线牢固。

维护：定期检查装置运行状态，清洁外壳，更新固件，并根据需要校准参数。

Deif DGU-2 differential protection device is a professional power protection equipment launched by DEIF company in Denmark. It is mainly used for differential protection of key power equipment such as generators and transformers, ensuring the safe and stable operation of the power system.

CHARACTERISTICS

High precision current detection

The DGU-2 differential protection device adopts high-precision current transformers (CT) and advanced digital signal processing technology, which can monitor equipment current changes in real time and accurately, ensuring the sensitivity and reliability of differential protection.

Quick fault response

The device has high-speed fault detection and response capabilities, which can identify and remove faults in milliseconds, effectively preventing equipment damage and accident escalation.

Flexible configuration and parameter settings

Users can flexibly configure protection functions, action threshold values, delay times, and other parameters according to specific application requirements to meet customized needs in different scenarios.

Comprehensive protection function

In addition to differential protection, DGU-2 also integrates multiple protection functions such as overcurrent, overload, and ground fault, providing comprehensive equipment protection.

Friendly human-machine interface

The device is equipped with an intuitive operating interface and display module, supporting local parameter settings, status monitoring, and fault record queries, making it easy for users to operate and maintain.

High reliability and stability

Adopting industrial grade components and redundant design to ensure long-term stable operation of the device in harsh environments and reduce maintenance costs.

2、 Functional advantages

Differential protection function

By comparing the vector difference of currents on both sides of the equipment, internal faults (such as winding short circuits, grounding faults, etc.) can be identified, and the faulty circuit can be quickly cut off to protect the safety of the equipment.

Harmonic suppression and anti-interference capability

Built in advanced filtering algorithms effectively suppress harmonic interference and ensure the accuracy of protection actions.

Communication and monitoring functions

Supports multiple communication protocols such as Modbus and IEC 61850, and can be integrated with upper computers or monitoring systems to achieve remote monitoring and data transmission.

Fault recording and analysis

The device can record the current, voltage waveform, and action time when a fault occurs, providing detailed data support for fault analysis.

3、 Application scenarios

DGU-2 differential protection device is widely used in the following fields:

Power plant: protects core equipment such as generators and transformers.

Industrial power system: protects critical loads such as large motors and frequency converters.

In the field of new energy, it is suitable for the protection of equipment such as wind turbines and photovoltaic inverters.

Data center and infrastructure: ensuring the reliability and continuity of the power supply system.

4、 Technical parameters (refer to typical specifications)

Parameter specifications

Rated current 1A/5A (customizable)

Action time<20ms (typical value)

Accuracy level 0.2S (current measurement)

Communication interface RS485, Ethernet IEC 61850

Working temperature -25 ° C to+70 ° C

Protection level IP54 (optional IP65)

5、 Installation and maintenance

Installation: Professional technicians need to install according to the instructions to ensure that the polarity of the current transformer is correct and the secondary circuit wiring is firm.

Maintenance: Regularly check the operating status of the device, clean the casing, ｕｐｄａｔｅ firmware, and calibrate parameters as needed.

PSM-1      备货
CM-2       备货
IPM-1     备货
OPM-1    备货
SCM-1     备货

主营产品，优势供应，充足库存 世界知名品牌的PLC 、DCS 系统备件 模块 Honeywell霍尼韦尔。Schneider施耐德。 艾默生EMERSON。XYCOM。 Woodward伍德沃德。西屋Westinghouse。 WEStation系统备件。英维思Triconex。 Motorola摩托罗拉。罗克韦尔Rockwell。 ABB。XYCOM。 本特利Bently。GE通用电气。Yaskawa安川。 Bosch Rexroth博世力士乐。 Yokogawa横河。Siemens(西门子)。 Reliance。Modicon莫迪康。