Qj1g-50 Buchholz Gas Relay for Transformer-1687514777062306
Basic Info.
Model NO.
QJ1G-50
Protective Characteristics
Enclosed Rlay
Action Principle
Electronic Type
Size
Miniature
Type
Electric Parameter Relay
DN
50
Service Conditions
Permissible Operating Temperature -40 ~95c
Transformer Type
Oil-Immersed
Fuction
Alarm
Transport Package
Wooden Case or as Per Requirement
Specification
IEC Standard
Origin
Ningbo China.
HS Code
853649000
Production Capacity
50000 Sets/Year
Product Description
Main application
Buchholz relay type QJ is a kind of protective device used for oil immersed transformer with conservator and on-
load tap changer. If a fault generated inside the transformer(or the on-load tap changer), cause gases
generated from oil decomposed. When the amount of gas accumulate up to a stated level, the signal contact of
buchholz relay turns on and send alarm signal. When a serious fault generates inside transformer or on-load
tap changer, the transformer oil surge will happen, oil flow heavily in the pipeline and result in the operation of
baffle plate of buchholz relay leads to the trip contact turning on, so trips the transformer. If the oil level is low
due to the oil losses, the alarms is also initiated.
![Qj1g-50 Buchholz Gas Relay for Transformer]()
Buchholz relay type QJ is a kind of protective device used for oil immersed transformer with conservator and on-
load tap changer. If a fault generated inside the transformer(or the on-load tap changer), cause gases
generated from oil decomposed. When the amount of gas accumulate up to a stated level, the signal contact of
buchholz relay turns on and send alarm signal. When a serious fault generates inside transformer or on-load
tap changer, the transformer oil surge will happen, oil flow heavily in the pipeline and result in the operation of
baffle plate of buchholz relay leads to the trip contact turning on, so trips the transformer. If the oil level is low
due to the oil losses, the alarms is also initiated.
| 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 highter,however the inclination between the axis and level surface may not exceed 4% |
| structure of the gas relay | the relay's core structure is shown in fig.1 and the relay's upper core consist of gas lock1,gas lock nut 2,probe 3,blocking 4,snap ring(float) 5,weight drop6,guard board 7,magnet 8, connecting terminal 9,spring 10,regulating rod11 and dry reed contact12.formin a flow device that acts on tripping,gas lock 1 in the cover is used for exhaustion in the case of assembly and extracting gas out of order. probe 3 is used to check flexibility and reliability of the tripping mechanism. |
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