(II) the height width ratio of dry-type transformer pier installed on the ground is generally .m， and a guardrail of no less than m shall be installed around it， and a warning sign shall be hung at a prominent position.
The insulating layer in the middle of the silicon steel plate is aging， the anchor bolt cover with the iron core is damaged the iron core causes large vortex，RubjanaDistribution transformer procurement， resulting in heat， temperature rise， and the aging of the insulating layer is accelerated. The core insulation compressive strength of power transformer must be measured on time and accurately. If it is found that the insulation compressive strength is less than the index value， please remove and replace the anchor bolt cover or carry out insulation for the copper core cable.
RubjanaDry type transformer is a common electrical equipment， which can be used to convert the alternating voltage of one standard value into another standard value of the same frequency. The step-up dry-type transformer is used to convert the low-grade alternating voltage into another high-grade alternating voltage of the same frequency. It is widely used in high-frequency industries， such as variable frequency power supply.
Brief introduction of zero line of power transformer
BusanDry type transformer
In terms of the place of use， and most application places leading to fire accidents are easy to choose in large and medium-sized engineering buildings and multi-storey buildings;
The capacity and working voltage are different. The dry-type transformer is generally suitable for distribution equipment. The capacity is generally below kVA and the working voltage is below KV， which also ensures the rated voltage of kV; Oil immersed transformers are generally suitable for distribution equipment.
(I) the distance between the external contour of kV and below dry-type transformer and the surrounding guardrail or courtyard wall shall take into account the convenience of transportation and repair of dry-type transformer， and the distance shall not be less than m; At the angle with actual operation， a spacing of more than m shall be reserved; If metal fence is selected， the metal fence shall be grounded and a warning sign shall be hung at a prominent position.
Transformer manufacturer
In order to better carry out the experiment of power transformer oil， it is necessary to sample the power transformer oil. The sampling work should be carried out on a dry sunny day. The commonly used containers and sampling methods during sampling do immediate harm to whether the specific quality of the oil can be truly reflected. The oil sample for AC voltage withstand test shall not be less than .kg， and the oil sample for simplified experiment shall not be less than kg.
Quotation sheetFor kVA power engineering transformer，RubjanaBox transformer 630kVA price， clamp and electromagnetic coil to keep the electromagnetic coil in a stable clamping state to reduce noise.
Oil immersed transformer operation
The heat discharge pipe of heat pipe radiator is generally made of slotted seamless steel pipe after flattening by stamping die. When the heat discharge pipe is bent and welded by electric welding， oil leakage is often caused. This is due to the supporting force on the surface of the pipe and the working pressure on the inner cavity when stamping the heat discharge pipe.
Noise solution of dry-type transformer
Installation requirementsThe insulation distance between the winding and the iron yoke of power transformer is much larger than that between the windings， because the electric field between the winding and the iron yoke is far away and not as symmetrical as that between the windings. In the electric field in the middle of the winding， most of the cables are in phase with the insulating cylinder (plate) in the middle of the winding that is， the disconnection component of the electric field is small.
How to maintain dry-type transformer?
Therefore， in the operation prevention and regulation of relay protection dry-type transformer， it is necessary to find the short-circuit fault point according to the fault situation， lock the fault point， and analyze the short-circuit fault types of relay protection dry-type transformer. At the same time， if all fields are clear， disconnect the switching power supply at the fault point， the maintenance work of employees will be carried out smoothly， and the harm will not expand to a greater extent.
Rubjana() the installation position of secondary commercial insurance of transformer on column and ground shall meet the following requirements: if there is an disconnector on the secondary side， it shall be installed between the disconnector and low-voltage composite insulator， or the circuit breaker shall be selected as the disconnector; If there is no disconnector on the secondary side， it shall be installed on both sides of the low-voltage composite insulator， and the insulated cable jumper shall be connected to the insulated cable on both sides of the circuit breaker.
When the transformer is out of phase， if the second phase is blocked there is still no sound when the second phase is sent， and there is sound when the third phase is sent; If the third phase is blocked， as in the case of the second phase. There are three reasons for phase deficiency:
In the case of using dry-type transformer， customers must master the method of wiring. If there are problems in wiring， it is easy to cause common faults in application. So， what is the wiring mode of dry-type transformer?
