Unicreed Blog

Industrial and mining enterprises as well as civil buildings use oil-immersed transformers to convert network voltages of 10(6)kV or 35kV to busbar voltages of 230/400V. Suitable for AC 50/60Hz, three-phase maximum rated capacity of 2500kVA, can be used indoors, and can be installed on a pole when the capacity is 315kVA and below, and the ambient temperature is not higher than 40°C, not lower than -25°C, the relative humidity is not greater than 90% (ambient temperature is 25°C), and the altitude is not higher than 1000m.

Standard transformers (including non-isolated transformers) are designed to change voltage, which can be divided into step-down transformers and step-up transformers, with different numbers of turns in the primary and secondary coils. In some transformers, such as auto transformers, the primary and secondary sides are not isolated.

There are two ways to judge the fault of the transformer: intuitive judgment and analysis judgment. The fault analysis and judgment of transformers are mainly judged by the damage to the iron core as well as the short circuit between turns of the winding of the transformer.

Transformers with ferrite cores are non-conductive, ferromagnetic compounds with ferrite windings. Low coercivity and low eddy current losses make them ideal for high frequency applications.
Ferrite core transformers provide consistent performance under a variety of conditions, which is why they are so widely used in the electrical industry.

Dry-type transformers are being developed in an intelligent direction by State Grid Co., Ltd. and China Southern Power Grid Co., Ltd. in recent years Combining electronic, communication, computer and network technology with power equipment, monitoring, protecting, controlling, metering, and managing the power grid under normal and accident conditions, data transmission, remote monitoring, equipment predictive maintenance, etc.

The Isolation Transformers Functions is prevent electric shock accidents by isolating the two-phase electricity! We must first understand the power supply system in my country. The power supply system in my country uses a three-phase four-wire system and the neutral wire is grounded.