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Sep 24,2020

Installation method of outdoor power transformer

The installation of outdoor power transformers is divided into platform type, tower type, and floor type (including pre-installed type). Let's follow SCIENTEK ELECTRICAL to learn more about the characteristics and precautions of these three installation methods.


One of the installation methods of outdoor power transformers: pole tower type


The pole-tower type is to install the power transformer on the frame on the pole. Divided into a single-pole type and double pole type. When the power transformer capacity is 30KVA and below (including 30KVA), a unipolar power transformer workbench is usually used. Install the power transformer, high-voltage drop fuse, and high-voltage arrester on the cement pole, and its axis should be inclined 13°-15° in the direction opposite to the assembled power transformer.

outdoor power transformer

When the capacity of the power transformer is between 50KVA and 315KVA, a bipolar distribution transformer is usually used. The power transformer platform consists of a main magnetic pole cement pole and another auxiliary pole. The main pole is equipped with a high-voltage drop-out fuse and a high-voltage down conductor, and the auxiliary pole has a secondary reverse wire. The bipolar power transformer platform is rugged and durable, passing through a unipolar distribution transformer.


The advantages of the pole-tower installation of power transformers: it occupies a small area, does not need fences or fences around, and the live part is high from the ground, which is not prone to accidents. Disadvantages: The bench uses more steel and the cost is higher.


Installation method two of outdoor power transformer: desktop


The desktop is a 0.5-1m square platform built with bricks under the transformer pole, and the transformer is placed on it(Caravan Folding Solar Panels for outdoor). Generally, install transformers above 315KVA. Attention should be paid to desktop transformer installation:


The fence and the fence should keep a sufficient safe working distance from the transformer. There should be a solid fence or wall about 1.8m around the transformer, and a dedicated person should lock the door. Warning signs should be hung on the telephone poles or surrounding walls, such as "High voltage danger, no climbing", to prevent people and animals from approaching.

electrical power transformer

The advantages of desktop power transformer installation: low cost, easy to maintain, and repair. Disadvantages: It occupies a lot of lands, and fences should be installed around it. Small animals are easy to climb to the live parts, and they are prone to damage accidents by external forces.


The third installation method of outdoor power transformer: floor type


Floor-standing means placing the transformer directly on the ground. The high-voltage down-conductor, fuse, and lightning arrester are all on the wiring post. Attention should be paid to the installation of floor-standing transformers:


Since the live part of the transformer is very low from the ground, it must be cut off after entering the shelter. Reliable obstacles must be installed around the transformer, and the door must be locked and maintained by designated personnel. Warning signs must be hung outside the shelter, such as "High Voltage Danger, Do Not Climb".

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