Mr. yuktaedong
Mayday4000kva it will lead to the scalding of solenoid coil,Mr. yuktaedongPrice list of 630kVA box type transformer, slow aging of insulation, short circuit fault between boxes, two-color short circuit fault or short circuit to ground fault and dissolution of oil.
Before no-load impact closing, the pose period of overcurrent protection shall be set to zero,Mr. yuktaedongInspection items of oil immersed transformer, and the data signal circuit of steam vehicle relay shall be temporarily connected to the pull-in circuit.
Mr. yuktaedong.Once the insulation material of electrical equipment is overheated, the surrounding gas will cause a kind of odor. This kind of odor can be sniffed out by normal patrol staff. When you smell such odor during normal inspection, it must also be changed to produce flexible connection.
.35kV and above & plusmn; No load of rated voltage; Part of the circuit breaker of the tap power switch is installed in the phenolic resin insulating paper cylinder and the insulating paper cylinder is installed on the wooden frame. The actual operation rocker is connected with the dynamic circuit breaker of the tap power switch according to the wooden insulating rod. The on load tap off power switch is insulated from the ground by the insulating paper cylinder of the power switch itself and the insulating limit.
Oil leakage at looper flange
The time difference between different steps of three-phase power switch of switching power supply shall be less than 10ms, the closing shall be maintained by high-voltage arrester, and the neutral line of transformer shall be reliably grounded (it shall be grounded immediately).
Difference between dry-type transformer and oil immersed transformer:
Precautions for trial operation of power transformer manufacturers
Oil leakage of bolt or pipe external thread
Affordable price.Noise pollution control and prevention measures of dry-type transformer
In specific daily life, we have a certain understanding of the optical wavelength of oil immersed transformer. What kind of function does it have for transformer?
Solenoid insulation deterioration
The insulating layer shaft and the connecting articles between the bell jar and the core shall be removed. If it is a hanging bell inspection,Mr. yuktaedongParameters of 250kVA oil immersed transformer, the oil shall be pumped into the bottom of the bell jar before the bell jar can be removed.
Information recommendation.If the power transformer stops running for more than 72h (if the allowable time should be reduced when the ambient humidity is & amp; gt; 95%), it should be insulated before putting into use, and accurately measured with a 2500V grounding megger. The insulation resistance from the primary side to the secondary side and the ground should be ^ 300mfl, the insulation resistance from the secondary side to the ground should be ^ 100mh, and the insulation resistance from the iron core to the ground should be & amp; gt; 5mfl (note that the grounding device piece should be removed).
The efficiency of transformer is closely related to the output power level of transformer. Generally, the greater the output power, the smaller the loss to output power ratio and the higher the efficiency. On the contrary, the smaller the output power, the lower the efficiency.
Loose core screw
Mr. yuktaedong.When the new oil filled by the power transformer and the oil sample that has just been considered are used, the oil sample can be used only after sufficient standing.
Noise pollution control and prevention measures of dry-type transformer
In the electric field of the winding to the yoke, there must be a strong line breaking component, so that sliding flash charge and discharge may occur at a lower current. In order to better solve this disadvantage, the appearance of the insulating parts between the winding and the iron yoke should be the same as that of the medium horizontal plane of the winding to the iron yoke insulation as far as possible so as to reduce the electric field component intersecting with the insulating parts.