Contact pin device for wire plugging of secondary terminal of electric power equipment

The utility model relates to a contact pin device for the wire plugging of a secondary terminal of electric power equipment, which is used for carrying out test operation in a transformer substation. The contact pin device comprises a pin head, a pin head bin, a spring and a plug hoop, wherein a pin head feeding hole is formed at one end of the pin head bin, a pin head limiting hole is formed at the other end of the pin head bin, the spring is pressed at the upper part of the pin head, the plug hoop clamps the pin head (passing through the pin head feeding hole) in the pin head bin through the spring, the two sides of the outer part of the pin head bin are symmetrically provided with two pairs of limiting wings, and the outer part of the pin head bin between the limiting wings is set into an arc shape facilitating the rotation and sliding of the pin head pin. The device disclosed by the utility model can complete a test operation (involving the wire plugging of a secondary terminal) smoothly performed in comp