Reliable SF6 Switchgear Supplier and Manufacturer in China

KDM SF6 Switchgear

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Sf6 Switchgear: The Ultimate FAQ Guide

Without an advanced knowledge on Sf6 Switchgears, you may not be able to get one that serves the intended purpose.

However, with this guide, you’re going to become an expert in the Sf6 Switchgear.

This guide covers both basic and advanced concepts on this switchgear.

What is Sf6 Switchgear?

A Sf6 Switchgear is a type of switchgear that uses a special gas, Sf6, as its main insulation material.

It is basically an example of 气体绝缘开关设备.

Sf6 Switchgear

What are the Benefits of Sf6 Switchgear?

The benefits of SF6 switchgear include:

Low Maintenance Cost.

The general maintenance cost of using an Sf6 Switchgear is less since there are fewer blackouts.

此外，与开关设备组件无反应确保了它们的耐用性，从而降低了总体成本。

Minimizes on Space

An Sf6 Switchgear utilizes less space when you compare to Air Insulated Switchgear.

Sf6 Switchgear uses 10% of the space that Air Insulated Switchgear uses.

因此，您可以在空间较小的区域使用此开关设备。

Environmentally Safe

使用六氟化硫气体可最大限度地减少环境污染，因为它不会与环境发生反应。

此外，该气体不会与开关设备材料发生反应，从而避免了此类反应对环境产生的任何负面影响。

Reliable

Sf6 Switchgear offers a reliable option than Air Insulated Switchgear.

使用气体绝缘开关设备时，停电次数会减少。

此外，维护率非常低，这意味着为了维护而关闭开关设备的次数很少。

Easy to Assemble

An Sf6 Switchgear is easy to assemble at the shop.

此外，还有模块定制，以简化组装过程。

Are there Disadvantages of Sf6 Switchgear?

Yes. There are disadvantages to using Sf6 switchgear.

它们包括：

Frequent Flashovers

A decrease in the pressure of the SF6 gas in any compartment of the Switchgear results in flashovers.

需要经常监测压力水平以确保其不会下降。

High Initial Cost

The initial cost of purchasing an Sf6 Switchgear is relatively higher when you compare to purchasing Air Insulated Switchgear.

Requires Maximum Care

Dust contamination of live parts of Sf6 Switchgear is easy, which affects its performance.

There is, therefore, a need for maximum care to prevent dust contamination, which can be tedious.

High Outage Time

It takes a lot of time to identify ad diagnose a fault when it occurs.

这会导致大规模停电，影响工厂的运行。

Where can you use Sf6 Switchgear?

You can use Sf6 switchgear in the following areas:

1. Environmentally Sensitive Installation

The characteristics of Sf6 Switchgear makes it an ideal option for environmentally sensitive installation.

因为它们可以被封闭，而且由于材料属于法拉第笼，所以它们具有抗雷击的能力。

2. Urban Installations

You can use Sf6 Switchgear in areas where there is an appeal for real estate and price a critical component.

3. High Voltage Installation

An Sf6 Switchgear is common in common in applications that require high voltage since it utilizes a smaller space.

4. Underground Stations

由于它们可以使用金属外壳，因此非常适合使用。

What are the Components of Sf6 Switchgear?

The components of Sf6 switchgear include:

· 母线槽

母线是一种金属条或金属带，其功能是将电压设备连接到开关设备。

它们在开关设备内传输电流。

它们没有绝缘，但足够坚硬，可以在绝缘柱的支撑下保持平衡。

· 电流互感器

The function of a current transformer is to multiply or reduce the electrical current in an Sf6 Switchgear.

它有助于维持开关设备初级电路和次级电路之间的电流。

· Step-down Transformer

They help in the conversion of voltage from high to low, which the switchgear panel can use.

· 接地开关

接地开关有助于将开关设备中的多余电流引导至地面。

这有助于减少电气过载和电气故障的发生。

· 隔离开关/隔离器

The function of a disconnecting switch in an Sf6 Switchgear is to interrupt small currents which are capacitively coupled or induced.

They are a crucial part, especially during maintenance of the Sf6Switchgear.

· Air Break Switches.

They help in the sustenance of two lines or equipment of the switchgear panel, thus minimizing electrocution.

This is through isolation of circuit and equipment within the switchgear.

· 断路器

断路器有助于阻止电路中过多的电流流动。

这有助于防止开关设备内发生故障

它是一种金属包覆型，使用 SF6 气体进行故障中断和绝缘。

How does Sf6 Switchgear Work?

 Sf6 Switchgear

The optimum functioning of the Sf6 switchgear depends on the performance of the individual components.

当发生故障时，继电器通过关闭电路跳闸开始动作。

这是通过自动断开故障线路来实现的。

接下来，健康和运行部门确保所需的正常供应负荷流动。

这样，整个设备的电力供应就平稳了，确保不会造成损坏。

线路过载会抑制电流产生电磁释放动作。

然而，它会引发热元件产生热量。

加热器加热双金属片，使其向上弯曲。

这会将杠杆向上推，使钩子锁定。

这会断开主要接触，从而切断电源。

这样，当发生过载时，超过设定的电流，导致电磁脱扣器产生吸力。

A combination of the suction and the impact lever results in the lap hook to rotate upwards around the Shaft seat

This results in the release of the lock.

Which features should you look for when Buying Sf6 Switchgear?

You need to check on the following features when buying an Sf6 switchgear

·  Sf6 Switchgear Material

制造过程中使用的金属类型决定了开关设备面板的应用。

因此，您需要考虑制造过程中使用的金属类型。

· 安全

The Sf6 switchgear that you purchase should be safe for both the electrical equipment and those who are operating it.

有效的开关设备面板应尽量减少运行过程中危险的发生。

您可以通过查看规格并咨询专家来检查这一点。

· 空间

There are different sizes of Sf6 switchgear that utilize different spaces.

Before purchasing one, you should check on the space to ensure that you have enough for your Sf6 switchgear.

Space should allow for maintenance movements of the Sf6 Switchgear.

· 效率

The efficiency of your Sf6 switchgear is a critical aspect.

The Sf6 switchgear should be able to operate with minimal interference and maximum output.

这可确保您的应用程序实现最高的生产力和连续性。

· 制造商的声誉

You need to purchase your Sf6 Switchgear from a reputable manufacturer.

这确保了它的耐用性和质量。

当您的开关设备面板在保修期内出现问题时，他们还能对其进行维修和保养。

· 未来津贴

The perfect Sf6 switchgear should last an average of 30 years.

这段时间太长了，无法出现新的进展，例如增加设备。

因此，由于它是耐用的设备，它应该能够满足这些未来的需求。

· 保修单

Quality Sf6 switchgear will have a warranty period.

在此期间，您可以根据保修条款免费送修

Which Types of Sf6 Switchgear are there?

There are three types of Sf6 Switchgears available.

它们是：

• Low voltage Sf6 switchgear connects and disconnects, distributes and interrupts current flow with a voltage of up to 600V
• Medium Voltage Sf6 switchgear isolates, distributes, connects, and disconnects power system with a voltage range of between 600V and 69kV
• High Voltage Sf6 switchgear connects and disconnects, interrupts, and distributes current with a voltage of between 69kV and 230kV.

How does Screened Sf6 Switchgear compare to Normal Sf6 Switchgear?

A Screened Sf6 switchgear offers excellent electromagnetic interference resistance when you compare to normal Sf6 switchgear.

How do you Test Sf6 Switchgear?

You need to conduct the following test when testing Sf6 switchgear:

· 电流互感器铁芯试验

您需要测试电流互感器铁芯的比率和极性，并将结果与一次电流注入进行比较。

您需要逐步地进行此测试。

· 介电强度测试

介电试验在辅助电路上进行。

对于该测试，在接线端子和接地点之间施加 500 伏直流电压。

· 主电路电压测试

您需要检查介电强度，以消除操作过程中的损坏、错误紧固以及存在异物等原因。

这些问题可能会导致开关设备内部故障得不到解决。

· 抗短路能力

该测试确定母线及其断路、支撑和保护装置对电动力和热应力的抵抗能力。

· 温升限值

Temperature rise limits help in determining the appropriate operating temperature for Sf6 switchgear.

High temperature has the effect of components aging prematurely, leading to the failure of the Sf6 switchgear.

· 检查操作程度

This test determines the operational safety of the Sf6 Switchgear.

它还有助于防止固体和液体污染物接触开关设备。

· 爬电距离和电气间隙

You need to carry out this test between the live parts of the Sf6 Switchgear and also its exposed conductive parts.

您可以使用不同的极性来测量带电部件之间的距离。

螺栓连接、接头和不合适的连接器会降低初始绝缘值。

· 保护电路有效性

This helps in determining the safety of the Sf6 switchgear.

该测试还可确定导体意外断开时是否会出现高故障电流。

有效的保护电路需要承受最佳短路热应力，这会根据电源电流发生。

How can you Troubleshoot Sf6 Switchgear?

Troubleshooting Sf6 switchgear depends on the cause of the problem.

The following are the solution to the main Sf6 Switchgear problems.

i. Shutters not Closing

百叶窗无法关闭的主要原因是百叶窗损坏。

为了解决这个问题，您需要修理百叶窗并清洁可调节的部件。

您还可以在这些部位涂抹润滑油，以方便关闭。

ii. Indicating Light Extinction

指示光熄灭可能是由于以下原因造成的：

保险丝或电阻烧毁，灯泡灯丝断，限位开关接触器故障，辅助开关接触不良。

您需要检查以下内容来修复此问题：更换灯泡、更换保险丝或电阻器、清洁辅助触点或监控保险丝端子的 MCCB。

iii. You cannot Lock the Handle

该问题是由于内部锁定机制生锈或锁定机制故障引起的。

也可能是你使用了错误的钥匙来打开。

要解决此问题，请确保使用正确的密钥。

您需要润滑锁定机制或将其完全更换。

iv. Poor Control Unit Operation

控制单元操作不良可能是由于端子排的螺丝未拧紧造成的。

或者，这可能是由于控制插头连接不当造成的。

您需要拧紧接线端子的螺丝。您还可以适当地连接控制插头。

v. Shutters are not Opening

如果您的百叶窗无法打开，则可能是由于运动部件调整不良或这些部件缺乏润滑。

也可能是由于百叶窗变形造成的。

为了解决这个问题，您需要调整和润滑运动部件，并检查百叶窗以确保它们形状正确。

vi. Internal Noise

您的开关柜产生内部噪音的原因是隔板上的电磁感应螺钉。

电缆接触密封板是内部噪音的另一个来源。

确保已拧紧分隔板上的螺丝，并在电缆上涂上一层密封剂。

vii. Overheated Connections

这是由于螺栓高高在上且松动所致。

To solve this, ensure that you use the rated current value. Also, tighten any loose bolt and replace the busbar if necessary.

viii. The switchgear Fails the Dielectric Test or Ground Fault.

破裂的绝缘体会导致这种情况。此类绝缘体容易受潮或受到外来污染物的影响。

为了解决这个问题，您需要更换绝缘体。

也可以使用合适的清洁剂进行清洗，并擦干潮湿的地方。

What are Sf6 Switchgear Quality Certificates?

The following are the necessary quality certificates for a Sf6 Switchgear:

• 美国国家绝缘子标准 (ANI) 标准。
• 国际电工委员会（IEC）标准。
• 美国国家电气制造商协会 (NEMA) 标准。
• 电气电子工程师协会标准协会 (IEEE-SA)
• ISO 标准

Which Safety Features does Sf6 Switchgear come with?

The safety features available in Sf6 switchgear include:

· Remote Tracking

Remote tracking enables the removal or installation of circuit breakers from the outside of an arc flash boundary.

· Remote Switching

Remove Switching allows for remote charging, closing or opening of the switches and circuit breakers from a within a safe distance.

· Lock-out/Tag-out

It allows for permanent or temporary lockout Tag-out procedures customization as per the client’s application

Is Sf6 Switchgear Environmentally Friendly?

是的。

Sf6 switchgear is environmentally safe.

This is due to the use of Sf6 gas, which is a non-toxic, colorless, and odorless gas that has a minimal negative effect on the environment.

How does Sf6 Switchgear compare to Sf6 Circuit Breaker?

An Sf6 circuit breaker is a component of Sf6 switchgear.

The function of an Sf6 Switchgear is to distribute, connect, and disconnect the power system.

The function of a circuit breaker is to protect electrical distribution systems and power supplies.

Are there Alternatives to Sf6 Switchgears?

Yes. There are alternatives to Sf6 Switchgears.

它们包括：

 Sf 6 Circuit Breaker

• Carbon Dioxide Switchgears uses carbon dioxide as the main insulation material. It is a better alternative since it reduces greenhouse gas emissions better than Sf6 gas.
• Air-insulated Switchgear uses compressed air as the main insulation material. It’s a cheaper alternative to Sf6 switchgear since it is easily available.
• Oil Switchgear uses vaporized oil as the main insulation material. It is the oldest type of switchgear.
• Hybrid switchgear combines both air and gas properties, which act as the main insulation material for the switchgear. It features a compact and modest design containing different functions in a single module.

Other alternatives include Fluor ketone, carbon dioxide, and oxygen for high-voltage (HV) switchgear and Fluor ketone, nitrogen and oxygen for medium-voltage (MV) switchgear.

What is Sf6 Switchgear Specification?

The main specifications for Sf6 Switchgear include:

· 可靠性

An Sf6 Switchgear offers a reliable option against power interruption.

这是因为有不易发生故障的 SF6 气体。

零维护可减少电力中断，确保个人和工厂都能享受电力服务。

· 间隙距离

间隙距离是两种导电材料之间空气中的最小距离。

这对于防止由于空气电离而导致两个电极之间发生电介质击穿至关重要。

· 空间

Sf6 switchgear is a space utilizing switchgear.

与空气绝缘开关设备相比，小尺寸减少了安装空间。

Sf6 Switchgear uses 10% of the space that Air Insulated Switchgear uses.

此特点增加了它的应用领域。

· 爬电距离

这是两种导电材料之间绝缘层表面上最小距离的测量值。

由于放电，该区域的表面周围发生腐蚀。

因此，通过称为跟踪的过程来维持爬电距离非常重要。

在检查跟踪时，需要考虑比较跟踪指数和大气污染水平。

· 维护

Sf6 Switchgear requires less maintenance, which helps in reducing the overall cost of the switchgear.

这是因为发生的故障较少，而且 SF6 气体具有惰性。