Audited Supplier
QJ series Buchholz Relay Manufacturers Gas Relay f
Relay
Solid State Relay
3
AC
3
Medium Power Relay
Sealed Relay
Electronic Type
Miniature
Electric Parameter Relay
Transformer Protective, Transformer
Protect Transformers From Faults Occurring Inside
Qj Series
Buchholz Relay, Gas Relay
Easy Installation and Visible Inspection
xincheng
Pallet
piece
China
Product Description
Overview
Quick Details
Place of Origin: China Brand Name: XINCHENG
Application: protect transformers from faults occurring inside transformer
Model Number: QJ series Function: Overvoltage
Product name: Buchholz relay, gas relay Usage: transformer protective
Size: Miniature Coil Structure: TOROIDAL
Feature: easy installation and visible inspection Phase: Three
Certification: ISO 9001-2015
Description:
Gas relay is a protection device for oil-immersed transformers and on-load switches with oil conservator. When a fault occurs inside the transformer (or on-load switch) and the gas generated by the decomposition of the transformer oil exceeds a certain amount, the signal contact of the relay is turned on and an alarm signal is issued. When a serious fault occurs inside the transformer (or on-load switch), there will be a surge of transformer oil, which will generate oil flow in the pipeline, impulse the baffle of the relay, and when the baffle reaches a certain limit position, the relay will trip The contact is connected and the power supply of the transformer is cut off to protect the transformer. If the oil level of the transformer is lowered due to oil leakage, the relay will also send out an alarm signal
The relay that monitors the tap changer is considered to be a tap changer protection relay and an oil flow relay. This is a monitoring device applied to an oil-immersed tap changer with an oil conservator, and its role is to protect the tap changer. And the transformer is protected from damage. When the oil flow of the oil conservator exceeds the limit, the monitoring relay will act and disconnect the connection between the tap changer and the transformer.
The gas relay is divided into on load gas relay (the radius of oil pipe is generally 50mm or 80mm) and body gas relay (the radius of oil pipe is generally 80mm). There are different models of gas relay, such as float type, baffle type, open cup type and so on.
QJ series gas relay is a main protection device for internal faults of oil-immersed transformers and oil-immersed on-load tap-changers. The gas relay is installed on the connecting pipeline between the transformer and the oil conservator, and the oil is decomposed when an internal fault occurs in the transformer. When gas is generated or the oil flow is surging, the contact of the gas relay is activated to connect the designated control circuit, and promptly send out an alarm signal or automatically cut off the transformer.
The relay shall be installed in the connecting pipe between the transformer and the oil conservator. The pipe should be as long and straight as possible and must be inclined upward, towards the conservator, at an angle of 3 to 7 degrees from the horizontal.
The transformer side of the relay shall have a straight pipe section at least five times the inner diameter of the pipe, and the oil conservator side shall have a straight pipe section at least three times the inner diameter of the pipe.
A machined surface is provided on the relay body for testing the installation of the relay. Whether in the inclined direction or at right angles to the pipe, the relay should be horizontal.
Technical parameter:
The data displayed are regular parameters, we can also customize to special requirements.
QJ-80 SERIES GAS RELAY:
The data displayed are regular parameters, we can also customize to special requirements.
Technical parameter:
Assembling method:
the relay's pipe axis should be parallel to the transformer case cover, and it is allowed for the end leading to the conservator is higher, however the inclination between the axis and level surface may not exceed 4%
installation and application
(1) The overall size of QJ4‐25 Relay is shown as Fig. Above.
(2) The Gas relay is fitted in pipeline between the tank and conservator. pay special attention to the arrow on the housing the conservator.
(3) For filling oil, please all valves in the pipeline between the tank and conservator, blled the housing via the bleeder and then closed.
(4) Air pumped form the air plug, the reliability of "Signal" contacting motion can be checked.
(5) Cover twisted down, pin prossed, the reliability of "Trip" contacting motion can be checked.
5,Note
(1) Before the newly‐produced relay installed and used, the relay chip must be taken out and the locked banding used during the transportation should be demolished.
(2) The Gas relay must be checked by special device, then can mounted.
(3) The spring on the baffle plate can changed the length, adjusting the value for tripping. The other parts of the Gas relay can`t change at will.
(4) Replacing or adding some parts near the permanent magnet and magnetic switch, the non‐magnetic material must be used.
(5) The permanent magnet can be not intensely vibratied or in strong magnetic field, The permissible operating temperature is from ‐40°C to 100°C.
(6) The magnetic switch can't dismantle and the end of leads can`t bend at will.
Technical data:
(1) Working temperature:‐30°C~95°C
(2) Switch Capacity: AC 220V 0.3A COSφ≤0.6
DC 220V 0.3A S≤5×10‐3S
(4) Sealing character: filling transformer oil into the relay, Pressurizing normal
temperature 200kPa,Continued 20 min and without any leakage.
(5) Insulation Character
(6) Antivibration capacity
When acceleration is 4g at vibration frequency of 4~20Hz,the relay shall not do any.
Structure performance:
Stainless steel material: preservative , extended service life
imported stainless float:
solve oil absorption aging
buoyancy problem
dustproof and waterproof housing:
logistics open-air warehouse use rainwater design
easy to use:
simple product structure
convenient operation
Main Features:
The oil level above the box cover can be observed through the left window, and the oil level below the box cover can be observed through the right window
Alloy wiring terminal, with good conductivity, firm wiring and wear resistance. It adopts the design of fast wiring terminal, which makes it easy to connect and tighten it once inserted.
Select high-strength corrosion-resistant alloy materials
The product surface adopts electrostatic spray coating technology, with uniform and beautiful paint surface and strong adhesion
Solve the problem of frequent alarm and trip. The oil level of alarm signal and cut-off signal can be set as required
Packaging & Delivery
Packaging Details : carton and packaged in plywood pallet, or by customer's demand
Port: Tianjin, Qingdao or Shanghai
Lead Time : 7-15days
Please Contact Us
Miss: lydia
Mob: 86-13752439076 Fax: 86-22-60863016
Quick Details
Place of Origin: China Brand Name: XINCHENG
Application: protect transformers from faults occurring inside transformer
Model Number: QJ series Function: Overvoltage
Product name: Buchholz relay, gas relay Usage: transformer protective
Size: Miniature Coil Structure: TOROIDAL
Feature: easy installation and visible inspection Phase: Three
Certification: ISO 9001-2015
Description:
Gas relay is a protection device for oil-immersed transformers and on-load switches with oil conservator. When a fault occurs inside the transformer (or on-load switch) and the gas generated by the decomposition of the transformer oil exceeds a certain amount, the signal contact of the relay is turned on and an alarm signal is issued. When a serious fault occurs inside the transformer (or on-load switch), there will be a surge of transformer oil, which will generate oil flow in the pipeline, impulse the baffle of the relay, and when the baffle reaches a certain limit position, the relay will trip The contact is connected and the power supply of the transformer is cut off to protect the transformer. If the oil level of the transformer is lowered due to oil leakage, the relay will also send out an alarm signal
The relay that monitors the tap changer is considered to be a tap changer protection relay and an oil flow relay. This is a monitoring device applied to an oil-immersed tap changer with an oil conservator, and its role is to protect the tap changer. And the transformer is protected from damage. When the oil flow of the oil conservator exceeds the limit, the monitoring relay will act and disconnect the connection between the tap changer and the transformer.
The gas relay is divided into on load gas relay (the radius of oil pipe is generally 50mm or 80mm) and body gas relay (the radius of oil pipe is generally 80mm). There are different models of gas relay, such as float type, baffle type, open cup type and so on.
QJ series gas relay is a main protection device for internal faults of oil-immersed transformers and oil-immersed on-load tap-changers. The gas relay is installed on the connecting pipeline between the transformer and the oil conservator, and the oil is decomposed when an internal fault occurs in the transformer. When gas is generated or the oil flow is surging, the contact of the gas relay is activated to connect the designated control circuit, and promptly send out an alarm signal or automatically cut off the transformer.
The relay shall be installed in the connecting pipe between the transformer and the oil conservator. The pipe should be as long and straight as possible and must be inclined upward, towards the conservator, at an angle of 3 to 7 degrees from the horizontal.
The transformer side of the relay shall have a straight pipe section at least five times the inner diameter of the pipe, and the oil conservator side shall have a straight pipe section at least three times the inner diameter of the pipe.
A machined surface is provided on the relay body for testing the installation of the relay. Whether in the inclined direction or at right angles to the pipe, the relay should be horizontal.
Technical parameter:
| No. | type | Connecting diameter DO | H | L | D | A | D1 | D2 | d |
| 1 | QJ4-25 | Φ25 | 210 | 200 | 14 | ||||
| 2 | QJ4G-25 | 190 | |||||||
| 3 | QJ6-25 | ||||||||
| 4 | QJ1-50 | Φ50 | 213-215Reference number | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 |
| 5 | QJ2-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 6 | QJ3-50 | ||||||||
| 7 | QJ4-50 | ||||||||
| 8 | QJ5-50 | ||||||||
| 9 | QJ6-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 10 | QJ7-50 | ||||||||
| 11 | QJ8-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 12 | QJ9-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 13 | QJ10-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 14 | QJ11-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 15 | QJ12-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 16 | QJ13-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 17 | QJ14-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 18 | QJ15-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 19 | QJ16-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 20 | QJ17-50 | 160 | Φ130 | 120 | Φ100 | Φ60 | M12 | ||
| 21 | QJ18-50 | 185 | Φ125 | 125 | Φ14 | ||||
| 22 | QJ19-50 | ||||||||
| 23 | QJ20-50 |
QJ-80 SERIES GAS RELAY:
| No. | type | Connecting diameter DO | H | L | D | A | D1 | D2 | d |
| 1 | QJ1-80 | Φ80 | 213-215Reference number | 160 | Φ130 | 120 | Φ100 | Φ86 | M12 |
| 2 | QJ2-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 3 | QJ3-80 | ||||||||
| 4 | QJ4-80 | ||||||||
| 5 | QJ5-80 | ||||||||
| 6 | QJ6-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 7 | QJ7-80 | ||||||||
| 8 | QJ8-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 9 | QJ9-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 10 | QJ10-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 11 | QJ11-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 12 | QJ12-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 13 | QJ13-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 14 | QJ14-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 15 | QJ15-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 16 | QJ16-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 17 | QJ17-80 | 160 | Φ130 | 120 | Φ110 | Φ86 | M12 | ||
| 18 | QJ18-80 | 185 | Φ160 | 160 | Φ18 | ||||
| 19 | QJ19-80 | ||||||||
| 20 | QJ20-80 |
Technical parameter:
| Type | Relay Pipe Diameter | Operation Temperature | Speed Range | Junction Point Capacity | Weight |
| QJ-25 | Φ25mm | -30°c~+95°c | 1.0m/s | 220V 0.3A | 6kg |
| 110V 0.3A | |||||
| QJ-50 | Φ50mm | -30°c~+95°c | 0.6-1.0m/s | 220V 0.3A | 10kg |
| 110V 0.3A | |||||
| QJ-80 | Φ80mm | -30°c~+95°c | 0.7-1.5m/s | 220V 0.3A | 11kg |
| 110V 0.3A |
Assembling method:
the relay's pipe axis should be parallel to the transformer case cover, and it is allowed for the end leading to the conservator is higher, however the inclination between the axis and level surface may not exceed 4%
installation and application
(1) The overall size of QJ4‐25 Relay is shown as Fig. Above.
(2) The Gas relay is fitted in pipeline between the tank and conservator. pay special attention to the arrow on the housing the conservator.
(3) For filling oil, please all valves in the pipeline between the tank and conservator, blled the housing via the bleeder and then closed.
(4) Air pumped form the air plug, the reliability of "Signal" contacting motion can be checked.
(5) Cover twisted down, pin prossed, the reliability of "Trip" contacting motion can be checked.
5,Note
(1) Before the newly‐produced relay installed and used, the relay chip must be taken out and the locked banding used during the transportation should be demolished.
(2) The Gas relay must be checked by special device, then can mounted.
(3) The spring on the baffle plate can changed the length, adjusting the value for tripping. The other parts of the Gas relay can`t change at will.
(4) Replacing or adding some parts near the permanent magnet and magnetic switch, the non‐magnetic material must be used.
(5) The permanent magnet can be not intensely vibratied or in strong magnetic field, The permissible operating temperature is from ‐40°C to 100°C.
(6) The magnetic switch can't dismantle and the end of leads can`t bend at will.
Technical data:
(1) Working temperature:‐30°C~95°C
(2) Switch Capacity: AC 220V 0.3A COSφ≤0.6
DC 220V 0.3A S≤5×10‐3S
(4) Sealing character: filling transformer oil into the relay, Pressurizing normal
temperature 200kPa,Continued 20 min and without any leakage.
(5) Insulation Character
(6) Antivibration capacity
When acceleration is 4g at vibration frequency of 4~20Hz,the relay shall not do any.
| Test item | Voltage between contacts | Voltage between terminal and earth | Voltage between signal and tripping terminal |
| Bring to bear on industry voltage | 1000v /1 min | 1000v /1 min | 1000v /1 min |
Structure performance:
Stainless steel material: preservative , extended service life
imported stainless float:
solve oil absorption aging
buoyancy problem
dustproof and waterproof housing:
logistics open-air warehouse use rainwater design
easy to use:
simple product structure
convenient operation
Main Features:
The oil level above the box cover can be observed through the left window, and the oil level below the box cover can be observed through the right window
Alloy wiring terminal, with good conductivity, firm wiring and wear resistance. It adopts the design of fast wiring terminal, which makes it easy to connect and tighten it once inserted.
Select high-strength corrosion-resistant alloy materials
The product surface adopts electrostatic spray coating technology, with uniform and beautiful paint surface and strong adhesion
Solve the problem of frequent alarm and trip. The oil level of alarm signal and cut-off signal can be set as required
Packaging & Delivery
Packaging Details : carton and packaged in plywood pallet, or by customer's demand
Port: Tianjin, Qingdao or Shanghai
Lead Time : 7-15days
Please Contact Us
Miss: lydia
Mob: 86-13752439076 Fax: 86-22-60863016
