Introduction To 5 Common Terminal Blocks Connection Methods
As an important component of electrical connections, terminal blocks have various wiring methods. The following are five common wiring methods for terminal blocks:
Screw connection:
Screw connection is a connection method that uses screw type terminal blocks.
When wiring, attention should be paid to the maximum and minimum cross-sections allowed for connecting wires, as well as the maximum tightening torque allowed for screws of different specifications.
Welding:
The most common welding method is soldering.
The most important aspect of soldering connection is the continuity of metal between the solder material and the surface being soldered.
The common coatings for welding ends of wire ring terminals include tin alloy, silver, and gold.
Crimp connection:
Crimping is a technique used to compress and displace metal within specified limits, and to connect wires to contact pairs.
A good crimping connection can generate metal mutual melting flow, causing symmetrical deformation of the material between the wire and the contact.
Crimping connections can achieve good mechanical strength and electrical continuity, and can withstand more harsh environmental conditions.
When crimping, special crimping pliers or automatic or semi-automatic crimping machines should be used, and the crimping connection is a permanent connection that can only be used once.
Winding:
Winding is the process of directly wrapping a wire around a contact post with sharp edges.
When winding, the wire is wound under controlled tension, pressed and fixed at the corners of the contact piece winding column to form an airtight contact.
There are specific requirements for winding wires, such as the nominal diameter of the wire being within the range of 0.25mm to 1.0mm.
Puncture connection:
Puncture connection, also known as insulation displacement connection, is a new technology invented by the United States in the 1960s.
Piercing connections have the characteristics of high reliability, low cost, and easy use.
It is suitable for connecting ribbon cables, and does not require stripping the insulation layer of the cable during connection. It relies on the tip of the "U" shaped touch spring of the terminal block to pierce into the insulation layer, allowing the cable conductor to slide into the groove of the touch spring block and be clamped, thereby forming a tight electrical connection between the cable conductor and the terminal spring block.
In summary, each of these five wiring methods has its own characteristics, and the selection should be balanced based on specific application scenarios and requirements.
