Main Characteristics and Indicators of Transformer Core Earthing Current Online Monitoring System

I. Overview When <br> <br> power grounding transformer core two or more points in the interior of the core will produce circulation, causing local overheating, can cause severe localized burning core, or even the ground plate fusing, resulting in The core potential is suspended, resulting in a discharge failure, which seriously threatens the reliable operation of the transformer. Therefore, it is very important to monitor the grounding current of the transformer core and the clamp in real time during the operation of the transformer. The traditional method uses the hand-held clamp ammeter to measure the ground current. The disadvantages are low precision, which is easy to be interfered by the power frequency magnetic field, and it is impossible to do real-time online monitoring of the ground current. The monitoring system (hereinafter referred to as the device) overcomes the above shortcomings, and can real-timely monitor the transformer core ground current and the clamp ground current, and has strong anti-interference ability and high precision. The monitoring data can be transmitted to the background via communication, and can be implemented with background analysis software. Online monitoring and fault alarm.

Second, the performance characteristics (1) can be real-time online monitoring of the transformer core ground current value, and when the ground current value exceeds the set alarm value, the automatic alarm, the alarm disappears after the alarm stops.

(2) Strong anti-interference ability and high measurement accuracy.

(3) It has a high degree of protection and is suitable for outdoor use.

(4) The standard MODBUS-RTU communication protocol is adopted, and it can be easily converted to other communication protocols so as to facilitate interconnection with various communication interfaces.

(5) The communication interface adopts standard RS-485, which can be transmitted by cable, and can also be transmitted by the wireless communication terminal selected by our company. When using my company's wireless communication terminal for data transmission, the longest distance can reach up to two kilometers to meet the field application, and this communication terminal adopts free channels, and once installed, no communication usage fee will occur.

Third, the technical indicators (1) current range: 1mA-10A

(2) Accuracy: ± (2% + 1 word)

(3) Resolution: Current 1mA

(4) Working power: AC85-264V50-60HZ; DC120-370V

(5) Operating temperature: -25°C to 70°C

(6) Relative Humidity: 5% to 95%

C steel purlin

 

C Steel Purlin is composed of automatic processing C steel purlin molding machine molding. The C steel purlin molding machine can automatically complete the molding process of the C steel purlin according to the given size of the C steel. C steel purlin is formed by bending coil thin wall, light weight, high strength, excellent section properties, compared with traditional channel, the same strength can save 30% of the material.

 

Description of C steel purlin:

Material: Q235, Q345

Size: C120-320

Thickness: 0.8-3mm

Length: 1-12m according to your requirement

Standard: AISI ASTM BS DIN GB JIS ETC

Surface: Painted or hot dip galvanized

Application:Support roof, Steel structure, purlin, Warehouse/ factory wall/ makeshift house

Package:Standard seaworthy bulk package by 20ft/40ft        container or as customer request

Delivery time: Within 15 days after we get your deposit

Payment:T/T, L/C, Western Union

FAQ:

 

1. Q: Are you a manufacturer?                      

Yes, we are a manufacture with our own steel structures factory.

2. Can you do the OEM producing?

Yes, we can.

3. What`s the MOQ?

Usually,it`s 25tons.

C Steel Purlin

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Shijiazhuang Zhouming Steel Building Materials Co., Ltd. , https://www.zmsteels.com