Transformer low-voltage coil

The utility model relates to a transformer low-voltage coil which comprises a coil body formed by winding copper foil. The end portion of the copper foil is led out upwards to form a wiring end, an upper interlayer isolation part and a lower interlayer isolation part are arranged on the side portion of the coil body and connected through coil braces, a transposition filler strip is arranged at one end of the upper interlayer isolation part, an insulation end coil is arranged at the bottom of the lower interlayer isolation part, and a shield exposed head is led out from the coil body. The transformer low-voltage coil is simple in structure, insulation performance, waterproof performance and heat resistance are improved, and the requirement for normal work under complex environment conditions of the transformer low-voltage coil can be met.