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On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
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  • On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
  • On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
  • On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
  • On-line Monitoring and Compensation Device for Grounding Current of Transformer Core
  • On-line Monitoring and Compensation Device for Grounding Current of Transformer Core

On-line Monitoring and Compensation Device for Grounding Current of Transformer Core

Due to the floating position between the core and the earth, there will be a ground current. Under normal circumstances, this current value is very small, and the transformer core multi-point grounding, it will form a loop between the core and the earth, then the grounding current will increase many times, will endanger the normal operation of the transformer. One is to cause local short-circuit overheating of the iron core, which will cause local burning or damage of the winding of the iron core in severe cases, resulting in inter-turn or inter-phase fault; The second is to cause local overheating of the transformer and discharge fault due to circulation of the grounding wire of the iron core. LHTX1306B-RS series iron core/clamp intelligent cutting device is designed by Changsha Lanhong to provide overcurrent protection for iron core/clamp. It is divided into manual cutting and manual self-integrated cutting. The protection network is divided into three levels of switching, which can be switched according to the current size. If the measured current is greater than a certain value, a first-level resistor network can be put into the measured circuit to reduce the current value and achieve the purpose of protection; when the measured current returns to normal, the input resistor network can be withdrawn.

Category: Product Center

Key words: equipment

Message
Tel：18182109884
Email: lhdqsw@126.com

Product Description

Product overview

Due to the floating position between the core and the earth, there will be a ground current. Under normal circumstances, this current value is very small, and the transformer core is connected to multiple points.After the ground, it will form a loop between the iron core and the earth, and the grounding current will increase many times, which will endanger the normal operation of the transformer. One is to cause iron coreLocal short circuit overheating, serious will cause the iron core local burning or damage to the winding, resulting in inter-turn or inter-phase fault;Partial overheating of the voltage regulator, resulting in discharge failure.

      LHTX1306B-RSThe series of iron core/clamp intelligent cutting devices are designed by Changsha Lanhong to provide overcurrent protection for iron core/clamp. It is divided into manual cutting and manual cutting. Two kinds of body casting. The protection network is divided into three levels of switching, which can be switched according to the current size. If the measured current is greater than a certain value, you can put a level in the measured circuit.The resistance network reduces the current value and achieves the protection purpose; when the measured current returns to normal, the input resistance network can be withdrawn.

Picture

Model

Function and technical parameters

 

◎ LHTX1306B-RS-S

◎ Size:

360*306*160mm

◎Can monitor the core/clamp grounding current, OLED local display;

◎With current overrun protection function, manual switching in nine gears;

◎With alarm threshold setting function;

◎Communication function: RS485(Modbus), 61850(DL/T860)(IED is required);

◎Measurement range: 1mA ~ 30A resolution 0.1mA;

◎Measurement accuracy: ± (standard reading * 1 mA);

◎Power consumption:<10W;

◎Dry contact output: capacity AC220V/3A;

◎Working environment:-40 ℃ ~ 65 ℃;

◎Working environment humidity: 10% ~ 95% at 25 ℃;

◎Protection class: IP66.

Iron core/clamp current limiting manual intelligent switching device

 

 

◎LHTX1306B-RS-Ｙ

◎Size:

400*440*160mm

◎Can monitor the core/clamp grounding current, OLED local display;

◎With current overrun protection function, manual/automatic switching is carried out in three gears;

◎With alarm threshold setting function;

◎Communication function: RS485(Modbus), 61850(DL/T860)(IED is required);

◎Measurement range:1mA~30A,Resolution0.1mA;

◎Measurement accuracy: ± (standard reading *1mA);

◎Power consumption: <20W;

◎Dry contact output: capacity AC220V/3A;

◎Working environment:-40℃~ 65℃;

◎Working environment humidity:25℃10% to 95%.

Iron core/clamp current limiting manual self-integrated cutting device

 

 

 

 

 

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