Shengbang Manufacturers Gas Relay For Transformers gas relay used in oil immersed transformer QJ9 80
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- Supplier: Shenyang Shengbang Electrical Technology Co. Ltd.
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Product Overview
Description
1. The product adopts the structure design of floating ball and baffle, which has more stable and reliable control performance.
2. The double float gas relay is installed on the pipeline between the transformer and the oil conservator.
3. Under normal circumstances, the relay is filled with insulating liquid, and the floating ball is at the highest position due to buoyancy.
4. When the transformer encounters a fault, it will respond as follows:
a. Accumulation of gas: There is free gas in the insulating liquid, the accumulated gas rises and the liquid level falls, and the upper float drops together, making the contact connected and sending out a signal. (The lower float is not affected as gas can flow from the pipe port to the conservator.)
b. Loss of insulating liquid: due to a leak in a certain part, the insulating liquid is lost, and the floating ball descends to send out a signal. The liquid continues to lose, and the lower floating ball descends to send a signal to cut off the power supply connected to the transformer.
c. Insulating liquid fault: When the insulating liquid inside the transformer produces pressure fluctuations, the pressure wave impacts the flow velocity plate at this time, exceeding the action sensitivity value of the flow velocity plate, the flow velocity plate moves along the direction of liquid fluctuation, the contacts pull together, and the transformer trips.
2. The double float gas relay is installed on the pipeline between the transformer and the oil conservator.
3. Under normal circumstances, the relay is filled with insulating liquid, and the floating ball is at the highest position due to buoyancy.
4. When the transformer encounters a fault, it will respond as follows:
a. Accumulation of gas: There is free gas in the insulating liquid, the accumulated gas rises and the liquid level falls, and the upper float drops together, making the contact connected and sending out a signal. (The lower float is not affected as gas can flow from the pipe port to the conservator.)
b. Loss of insulating liquid: due to a leak in a certain part, the insulating liquid is lost, and the floating ball descends to send out a signal. The liquid continues to lose, and the lower floating ball descends to send a signal to cut off the power supply connected to the transformer.
c. Insulating liquid fault: When the insulating liquid inside the transformer produces pressure fluctuations, the pressure wave impacts the flow velocity plate at this time, exceeding the action sensitivity value of the flow velocity plate, the flow velocity plate moves along the direction of liquid fluctuation, the contacts pull together, and the transformer trips.
Product characteristics
一、The double float gas relay is installed on the pipeline between the transformer and the oil conservator.
1. Under normal circumstances, the relay is filled with insulating liquid, and the float is at the highest position due to buoyancy. When a transformer encounters a fault, it reacts as follows:
(1) Gas accumulation: There is free gas in the insulating liquid, the gas accumulates to rise and squeeze the liquid level to drop, and the upper floating ball falls together to make the contact connected and send out a signal. (The lower float is not affected as gas can flow from the pipe port to the conservator.)
(2) Loss of insulating liquid: Due to leakage of a certain part, the insulating liquid is lost, the upper float drops, and a signal is sent. The liquid continues to lose, and the lower float drops to send a signal to cut off the power supply connected to the transformer.
(3) Insulating liquid fault: When the insulating liquid inside the transformer produces pressure fluctuations, the pressure wave impacts the flow velocity plate at this time, exceeding the action sensitivity value of the flow velocity plate, the flow velocity plate moves along the direction of the liquid fluctuation, the contacts pull together, and the transformer trips.
二、 Flow rate and light gas intelligent output (intelligent control is planned to be added)
三、 Intelligent requirements1.
1. Two-in-one form of flow rate and light gas sensor, small size and high sensitivity.
2. Display the operation status of the main transformer in real time, and provide alarm contacts according to protection needs.
3. The light gas alarm value of the floating ball sends out an alarm signal when the gas volume inside the shell accumulates to 250-300ml.
4. The oil shortage alarm value of the lower float is generally 1/4 of the remaining oil in the pipeline or when the gas volume accumulates 1050±100ml based on the shell, an alarm signal will be issued.
5. The heavy gas baffle can be adjusted according to the transformers with different capacities on site. The general factory setting value is 1.0±0.1m/s, and the stability is that the three-time measurement error value should not exceed 0.05m/s.
1. Under normal circumstances, the relay is filled with insulating liquid, and the float is at the highest position due to buoyancy. When a transformer encounters a fault, it reacts as follows:
(1) Gas accumulation: There is free gas in the insulating liquid, the gas accumulates to rise and squeeze the liquid level to drop, and the upper floating ball falls together to make the contact connected and send out a signal. (The lower float is not affected as gas can flow from the pipe port to the conservator.)
(2) Loss of insulating liquid: Due to leakage of a certain part, the insulating liquid is lost, the upper float drops, and a signal is sent. The liquid continues to lose, and the lower float drops to send a signal to cut off the power supply connected to the transformer.
(3) Insulating liquid fault: When the insulating liquid inside the transformer produces pressure fluctuations, the pressure wave impacts the flow velocity plate at this time, exceeding the action sensitivity value of the flow velocity plate, the flow velocity plate moves along the direction of the liquid fluctuation, the contacts pull together, and the transformer trips.
二、 Flow rate and light gas intelligent output (intelligent control is planned to be added)
三、 Intelligent requirements1.
1. Two-in-one form of flow rate and light gas sensor, small size and high sensitivity.
2. Display the operation status of the main transformer in real time, and provide alarm contacts according to protection needs.
3. The light gas alarm value of the floating ball sends out an alarm signal when the gas volume inside the shell accumulates to 250-300ml.
4. The oil shortage alarm value of the lower float is generally 1/4 of the remaining oil in the pipeline or when the gas volume accumulates 1050±100ml based on the shell, an alarm signal will be issued.
5. The heavy gas baffle can be adjusted according to the transformers with different capacities on site. The general factory setting value is 1.0±0.1m/s, and the stability is that the three-time measurement error value should not exceed 0.05m/s.
Installation
1. Before installing and using the relay, you must first take out the relay movement and remove the binding straps used for transportation and fixation. And check whether all fasteners are loose, whether the floating cup (float) and baffle move flexibly, and whether the contacts open and close reliably.
2. The relay should be installed on the joint pipe between the oil tank of the oil-immersed transformer and the oil conservator. The inner diameter of the joint pipe should be consistent with the pipeline diameter (diameter) of the relay. The arrow on the relay must point to the oil conservator. The end of the oil conservator is allowed to be slightly higher, but the inclination between the axis of the joint pipe and the horizontal plane must not exceed 4%, or the method of installing an inclined gas connecting pipe is used to allow the gas inside the transformer to smoothly enter the relay.
3. In order to facilitate the maintenance of the gas relay at the operating site, its installation position should ensure that the relay movement can be smoothly removed from the housing.
4. After the installation is completed, open the oil valve on the connecting pipe, unscrew the air plug dust cover and loosen the air plug nut 2 by hand (be careful not to unscrew the nut), let the air discharge until the oil nozzle escapes, and then Tighten the nuts.
2. The relay should be installed on the joint pipe between the oil tank of the oil-immersed transformer and the oil conservator. The inner diameter of the joint pipe should be consistent with the pipeline diameter (diameter) of the relay. The arrow on the relay must point to the oil conservator. The end of the oil conservator is allowed to be slightly higher, but the inclination between the axis of the joint pipe and the horizontal plane must not exceed 4%, or the method of installing an inclined gas connecting pipe is used to allow the gas inside the transformer to smoothly enter the relay.
3. In order to facilitate the maintenance of the gas relay at the operating site, its installation position should ensure that the relay movement can be smoothly removed from the housing.
4. After the installation is completed, open the oil valve on the connecting pipe, unscrew the air plug dust cover and loosen the air plug nut 2 by hand (be careful not to unscrew the nut), let the air discharge until the oil nozzle escapes, and then Tighten the nuts.
Debugging
1. The QJ series relay is an important protection device for oil-immersed transformers. Therefore, the operating department has special regulations. For example, it must be debugged, set and certified by the inspection department before it can be put into use. Therefore, debugging and oil speed setting work should be in accordance with relevant regulations. implement.
2. Adjustment of gas volumeChanging the position of the dry reed contact can adjust the gas volume of the signal contact action. When the dry reed contact moves up, the gas volume decreases, and when the dry reed contact moves down, the gas volume increases. The locking screw should be tightened after adjustment.
3. Oil speed adjustmentAdjusting the adjusting rod connected to the spring can change the tension of the baffle spring, which can change the oil speed of the trip contact (the relay has been set before leaving the factory, the value can be found in the factory inspection report). After adjustment, the nut should be locked. The action oil speed setting work should be carried out by professionals on special flow speed calibration equipment.
4. Adjustment of baffle rotation angleAdjusting the stop screw can change the rotation angle of the baffle, and adjust the distance between the magnet and the reed contact (0.5~1.0mm) to ensure that the reed contact opens and closes reliably.
2. Adjustment of gas volumeChanging the position of the dry reed contact can adjust the gas volume of the signal contact action. When the dry reed contact moves up, the gas volume decreases, and when the dry reed contact moves down, the gas volume increases. The locking screw should be tightened after adjustment.
3. Oil speed adjustmentAdjusting the adjusting rod connected to the spring can change the tension of the baffle spring, which can change the oil speed of the trip contact (the relay has been set before leaving the factory, the value can be found in the factory inspection report). After adjustment, the nut should be locked. The action oil speed setting work should be carried out by professionals on special flow speed calibration equipment.
4. Adjustment of baffle rotation angleAdjusting the stop screw can change the rotation angle of the baffle, and adjust the distance between the magnet and the reed contact (0.5~1.0mm) to ensure that the reed contact opens and closes reliably.
Color | Grey | Size | 200*185*238 mm |
Relay Pipe Diameter | Φ80mm | Operation Temperature | -40℃~105℃ |
Speed Range | 0.5~1.0mm | Junction Point Capacity | 220V 0.3A |
Application area
Company Profile
Shenyang Shengbang is a manufacturer specialized in development,production,marketing as a body electric power voltage regulator.Since origination,it has been persisting in taking the science and technology as the forerunner,the abundant technology as abacking,and positively introducing the overseas advanced technology,unceasingly improve and consummate the products, many years specialized management,the product best-selling nation,While exports to Bangladesh,Myanmar,India,Russia,Indonesia,Thailand and other countries in Southeast Asia and Africa, some of them are well sold to the world meanwhile receive high praise from the majority of customers.
Our Advantages
Certifications
Product packaging
1.Packaging:
Small capacity products (Automatic Voltage Regulators/Stabilizers), colour box as inner package and cardboard carton as outer package. Big capacity products, we use strong plywood case.
2.Shipping Methods:
By air or by sea(FOB port:Ningbo),by express (DHL,UPS,TNT,FEDEX).
Small capacity products (Automatic Voltage Regulators/Stabilizers), colour box as inner package and cardboard carton as outer package. Big capacity products, we use strong plywood case.
2.Shipping Methods:
By air or by sea(FOB port:Ningbo),by express (DHL,UPS,TNT,FEDEX).
FAQ
Q1: What is the Guarantee?
A1: Two years (for free) from the date of B/L. Besides, any of the spare parts can be supplied all the time, that is, during the guarantee period and after the guarantee period.
Important:
a. The efficiency of our Voltage Regulators / Stabilizers are 90% to 95% (some series of them reaches 95%), please don’t let them work overload!
b. Please make sure that all the electric wires are connected correctly according to the electric diagram
Q2: Can we put/show our own Logo on your products?
A2: Yes, no problem, however, the quantity should be a bit big.
Q3: Is OEM/ODM available?
A3: Yes, it is! Our products can be Customized. We have 5 senior engineers in our R&D Dept., we design and produce all kinds of Automatic Voltage Regulators/Stabilizers according to our customers’ specific requirements.
Q4: What is the MOQ?
A4: For the small capacity products (Automatic Voltage Regulators/Stabilizers) of the default configuration, it is 10 sets. For the big capacity products, it is 1 set.
Q5: Can you offer Form A or Form E or C/O ?
A5: Yes, no problem, we can apply for it from our local government.
Q6: What kind of Certificates do you have?
A6: CE, ISO9001 and SGS.
Q7: What is the Terms of Payment?
A7: L/C, T/T, D/P, D/A, Western Union and MoneyGram (for Small-amount payment).
Please don't be hesitate to Contact Us for any questions,your inquiry will be on our priority attention and fastest reply!
A1: Two years (for free) from the date of B/L. Besides, any of the spare parts can be supplied all the time, that is, during the guarantee period and after the guarantee period.
Important:
a. The efficiency of our Voltage Regulators / Stabilizers are 90% to 95% (some series of them reaches 95%), please don’t let them work overload!
b. Please make sure that all the electric wires are connected correctly according to the electric diagram
Q2: Can we put/show our own Logo on your products?
A2: Yes, no problem, however, the quantity should be a bit big.
Q3: Is OEM/ODM available?
A3: Yes, it is! Our products can be Customized. We have 5 senior engineers in our R&D Dept., we design and produce all kinds of Automatic Voltage Regulators/Stabilizers according to our customers’ specific requirements.
Q4: What is the MOQ?
A4: For the small capacity products (Automatic Voltage Regulators/Stabilizers) of the default configuration, it is 10 sets. For the big capacity products, it is 1 set.
Q5: Can you offer Form A or Form E or C/O ?
A5: Yes, no problem, we can apply for it from our local government.
Q6: What kind of Certificates do you have?
A6: CE, ISO9001 and SGS.
Q7: What is the Terms of Payment?
A7: L/C, T/T, D/P, D/A, Western Union and MoneyGram (for Small-amount payment).
Please don't be hesitate to Contact Us for any questions,your inquiry will be on our priority attention and fastest reply!
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