Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Not all transformers use oil cooling. In fact, the cooling method for transformers depends on their type, size, installation location, and specific application requirements. Besides oil cooling, there are several alternative cooling methods available. Below are some common transformer cooling methods:Dry-Type Transformers (Dry-Type Transformers)Natural Cooling Features: Dry-type transformers typically use air as the cooling medium without any liquid. Application: Suitable for indoor installation

The combination use of transformersIn certain specific cases, it might be feasible to consider using a step-up transformer followed by a step-down transformer, but this is not a common practice and requires careful handling to ensure safety and efficiency. Here are some situations where you might consider this combination:Cannot be used as both step-up and step-down at the same timeThe same transformer cannot perform both step-up and step-down operations simultaneously. The fundamental principle

Ways to increase efficiencyOptimize core material and structure High performance core materials are used：New core materials, such as amorphous alloys, are used. The amorphous alloy has excellent magnetic properties, and its hysteresis loss and eddy current loss are very low. Compared with the traditional silicon steel sheet core, the no-load loss of the amorphous alloy core transformer can be reduced by 70-80%. For example, an amorphous alloy iron core transformer with the same capacity can sign

Accuracy and calibrationFlux leakageIn open-close current transformer, the opening and closing of the iron core will lead to leakage of magnetic flux. Because the core is not a complete, continuous loop like a solid core transformer, part of the magnetic field line may escape through the gap. This can lead to inaccurate ratios. For example, if the transformer is designed with a ratio of 100:1 (the ratio of primary current to secondary current), magnetic flux leakage may bias the actual ratio, re

When the load on motors such as transformers and motors increases, the voltage drop (voltage drop) is usually due to several reasons:Line resistanceReason Increased current: As the load increases, the current flowing through the power line increases. Ohm's Law: According to Ohm's Law (V=IR), an increase in current leads to an increase in voltage drop. here V is the voltage drop, I is for current, R is the resistance of the wireExplainBecause there is a certain resistance in the power line, when

The ground of the substation is paved with stone mainly for the following reasons: Fire prevention and safety: The laying of pebbles or small stones under the transformer plays a role in fire prevention. When the transformer overheating or oil injection fire, the oil will flow through the cobblestone layer, into the oil discharge pool, so as to avoid the blockage of the oil ditch, while reducing the fire, conducive to fire suppression 1. In addition, cobblestones prevent small animals from enter

Applications in power systemsResidential area power supplyIn residential areas, the voltage introduced from the high-voltage distribution network (such as 10kV) needs to be reduced by the transformer before it can be supplied to residents. The low-voltage transformer will reduce the 10kV voltage to 380V/220V three-phase four-wire low-voltage electricity to meet the electricity demand of home lighting, electrical equipment (such as TV, refrigerator, air conditioning, etc.). This low-voltage power

Fixed Tap Changer (Fixed Tap Changer) and On-Load tap changer (OLTC) are both devices used to regulate the output voltage of a Transformer, but they work differently and in different application scenarios. Here are the differences between the two types of transformers:Fixed Tap Transformer (Fixed Tap Transformer)Working principle Fixed tap-changer transformers usually have only one or a few pre-set tap-changer positions, which determine the ratio of the transformer. When the transformer ratio ne

FuseFeatureThe fuse is a simple and effective circuit protection element. When the current flow in the circuit is large, the melt in the fuse (such as the fuse) will be blown due to overheating, thus cutting off the circuit and preventing the equipment in the circuit from being damaged due to overcurrent. In the use of AC power, it can protect various electrical equipment, lines, etc. connected to the AC power supply. For example, in the home circuit, if a short circuit fault occurs in an electr

High Voltage Current Transformer (HVCT) is a key device used to measure and monitor current changes in high voltage power systems. Its main role is to provide a safe and reliable way to detect and measure current without direct contact with high-voltage circuits. The following are the main roles of high voltage current transformers:Current measurementThe core function of the high voltage current transformer is to measure the current in the high voltage circuit. Because the current in high-voltag