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Substation Equipment: Transformer - Underground
Transformer - Underground
An underground transformer is essentially the same as an aboveground transformer, but is constructed for the particular needs of underground installation. Vault type, pad-mounted, submersible, and direct-buried transformers are used in underground systems. Pad-mounted transformers are installed on a concrete pad on the surface near the end-user.

Figure 1. Pad-mounted transformer for underground system
Figure 1. Pad-mounted transformer for underground system 		Figure 2. Transformer in underground vault
Figure 2. Transformer in underground vault
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