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The conductor rod is used to connect the lead wire of the transformer coil to the external high voltage wire and is installed on the top of the transformer. Generally, it is composed of three sets of high voltage conductive rod and four sets of low voltage conductive rod. The external parts are insulated with magnetic bottle sleeve and sealed with an oil resistant rubber bead and an oil resistant rubber pad. Conductive rod according to the material can be divided into brass (copper number HP b 59 1) conductive rod and copper (copper number cuT3) conductive rod, according to the use of high voltage conductive rod and low voltage conductive rod. Generally, there are 4okv transformer general standard conductive rod and various special-shaped conductive rod, and supporting copper nuts, copper gaskets, wiring terminals, wiring bars, copper standard parts and non-standard 

Type oil level gauge is mainly suitable for oil-immersed fully sealed transformer, installed on the upper part of the transformer oil tank cap, showing the oil level in the tank. When blue marks appear in the upper window of the oil level gauge, the oil level is normal and above the lid; The oil level is abnormal when marked in red. The oil level is below the lid of the tank and needs to be replenished appropriately. The thread at the top of this product can be used as the interface of oil injection edge pipe, pressure release valve, vacuum and so on. The tubular oil level gauge consists of seamless steel pipe, buoy indicating device window, upper cover or pressure relief valve. The window adopts the thick-walled glass tube structure, which can display the specific oil level in the lower 30mm of the lid. The oil level display is true, accurate and without false oil level phenomenon. Window outside diameter and pipe diameter is the same, effectively prevent accidental knock damage, 360 degree Angle of view, easy to observe.

Breathing process during transformer operation: with the oil temperature rising, the volume of oil expands, the excess oil in the tank enters the oil chamber of the oil storage tank (referred to as "oil chamber"), the volume of the oil chamber becomes larger, and the gas in the oil tank air chamber (referred to as "air chamber") is squeezed out and discharged into the atmosphere through the breathing apparatus; When the oil temperature in the tank decreases and the oil volume shrinks, the oil in the oil chamber enters the tank, and the atmosphere is sucked into the air chamber through the breathing apparatus. The oil level in the oil chamber is indicated by the oil level gauge. Oil level gauges are generally pointer type oil level gauges and glass tube type oil level gauges with small capsules, which are isolated from the atmosphere. The oil level gauge actually indicates the corresponding pressure in the tank. In addition to the transformer with expandable radiator, both distribution transformers, medium transformers and large transformers are equipped with breathing apparatus, which is the barrier between the transformer gas chamber and the outside world for exhaust. It plays a drying and filtering role on the gas entering the transformer, and its role is very important. When the respirator is blocked or the internal silica gel has a large degree of delixing, it will threaten the safe operation of the transformer. As substation operators, they must carefully observe and maintain the operation of breathing apparatus.

Transformer track should be level, wheel spacing and gauge should match. The top cover should be made to have 1. 5% elevation along the gas relay airflow direction, and the oil storage tank side rail cushion height is 16 mm. After the transformer is in place, the roller should be fixed with a detachable brake device. Transformer body grounding bolt and grounding for reliable connection.

The installation of the cooling device shall meet the following requirements: Before the installation of the radiator, the sealing test shall be carried out with air pressure according to the pressure value specified by the manufacturer for 30 minutes. Before the installation of the radiator, the qualified insulating oil should be rinsed by the oil cleaner, and the residual oil should be drained. Fan motor and blades are firmly installed, flexible rotation, no vibration, overheating, correct steering. The valve in the pipeline should be operated flexibly, the opening and closing position should be correct, and the connection of the valve and flange should be sealed well.

Special transformer transformer welding points, long weld, and oil immersed special transformer transformer is a steel plate welded shell based on a variety of welding and connection.

The total welding spot of a QB-5000/2 oil-immersed traction transformer reaches more than 70 places, and the total weld length is about 20m, so there may be more leakage paths. The cause of direct leakage is the failure of rubber seals and weld cracking, porosity, slag inclusion and so on.