Gas Relay

Description

Gas relay sedrles QJ are kinds of protective devices installed on oil immersed transformers with on load tap changers of 800KVA and above, it is mocented on the connecting pipe between transformer and oil conservator. When the stop plate of gas relay is rushed by gas or heavy oil flow caused by internal failure of transformer or on load tap changer,the tripping contacts will be closed and the power source be disconnected automatically to providea protection for transformer or on load tap changer.

Model Explanation

QJ: □-□

QJ: gas relay

□:Serial number
□:Nominal dia mm

Voltage Regulation Model

I.Main specifications

Type	fig	Installing dimension												Remarks
Type	fig	D	D1	D2	D3	D4	B	L1	L	H1	H2	n	d	Remarks
QJ4-25	fig1	25	85	115	31	56		200	206	210	150	4	14	There are 4 binding posts that can be Connect the air box. (1)
QJ6 -25	fig1	25	85	115	31	56		200	206	186	141		14	2 binding posts, no gas alarm signal (2)
QJ1-50	fig2	50	130		56	100	120	160	168	216	156	4	M12	This product is an old model, rarely used except for maintenance, with 4 terminals. The trip contacts are connected in series, and there is no gas box interface. (3)
QJ1-80		80	130		85	110	120	160	168	216	156	4	M12
QJ10-50		50	130		56	100	120	160	168	216	156	4	M12	This product is a replacement product of QJ1-50 and QJ1-80, with the same installation size,parallel connection of trip contacts, and air guide box can be installed. (4)
QJ10-80		80	130		85	110	120	160	168	216	156	4	M12
QJ3-50		50	125				125		185	223	160	4	14	This product is used on oil-immersed transformers with fire extinguishing device, 6 terminals, and can be installed with gas guide box. (5)
QJ3-80 QJ12-80		80	160				160		185	240	160	4	18
QJ4-50		50	125				125		185	223	160	4	14	5 terminal posts, the trip contacts are connected in parallel, and the gas guide box can be installed. (6)
QJ4-80		80	160				160		185	240	160	4	18