GT-120 Copper Connecting Tube D19, d15, L90mm

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GT-120 Copper Connecting Tube

GT-120 Copper Connecting Tube

(1 đánh giá)

Đầu Nối Đồng GT-120

GT-120 Copper Connecting Tube is a through-type tubular connector designed to join two conductor ends using a suitable crimping method. According to the supplied dimensional chart, model GT-120 has an outer diameter D of 19mm, an inner diameter d of 15mm and an overall length L of 90mm.

Before selection, compare the actual conductor diameter with the 15mm internal bore and use a compatible crimping tool and die. Do not determine the suitable cable size from the model number alone. Submit the conductor type, actual core dimensions and required quantity for specification checking and quotation.

GT-120 Copper Connecting Tube is a straight tubular cable connector that allows two conductor ends to be inserted from opposite sides and joined by crimping the tube body. The product drawing identifies the outer diameter as D, the inner diameter as d and the total length as L. Model GT-120 has an outer diameter of 19mm, an inner diameter of 15mm and a length of 90mm. These dimensions help technicians check whether the conductor can enter the tube, select a suitable crimping die and confirm that sufficient installation space is available. The actual conductor diameter should be checked before ordering instead of assuming the cable cross-section from the model designation.

What is the GT-120 Copper Connecting Tube used for?

The product is designed to join two conductor ends in a straight line, creating a continuous connection after crimping. It does not have a palm or bolt hole, so it must be distinguished from SC or DT cable lugs used for terminating conductors onto busbars, terminal blocks or electrical equipment.

With its through-type tubular structure, conductor ends are inserted from both sides of the connector. The connection depends on correctly matching the conductor, tube bore, crimping tool and die, as well as following the applicable installation procedure.

Buyers may also refer to the GTY straight connecting tube range to identify products with a similar straight-splicing function. However, GT and GTY should not automatically be treated as interchangeable without comparing their drawings and technical dimensions.

GT-120 Copper Connecting Tube specifications

Parameter Value
Product name GT-120 Copper Connecting Tube
Product code GT-120
Construction Through-type connecting tube
Outer diameter D 19mm
Inner diameter d 15mm
Length L 90mm

Đầu nối dây đồng

The 15mm inner diameter is the main dimension used to check whether the conductor can be inserted into the tube. The 19mm outer diameter is relevant when selecting the crimping die and any additional insulation required after installation. The 90mm length helps determine the space required for the joint inside an electrical enclosure, junction box or cable route.

GT-120 is the product designation shown in the supplied chart. The document does not directly state a compatible cable cross-section, so the number 120 should not automatically be interpreted as the actual conductor diameter or cross-sectional area. Conductors with the same nominal cross-section may have different overall core diameters depending on strand construction and manufacturer.

Construction features of the GT-120 connector

  • Straight tubular body: suitable for joining two conductor ends positioned on the same axis.
  • Through-type internal bore: allows conductors to be inserted from opposite ends to form an inline cable joint.
  • Defined dimensions: D 19mm, d 15mm and L 90mm support comparison with the conductor, crimping die and available installation space.
  • No bolted terminal palm: the product is intended for conductor-to-conductor joining and does not replace a cable lug used for equipment termination.

The electrical and mechanical performance of the finished joint depends on selecting the correct connector size, preparing the conductor properly, using a compatible crimping die and completing the insulation according to the installation requirements. The tube dimensions alone do not define the complete crimping process.

Suitable applications

A through-type connecting tube may be considered where two conductor sections need to be joined in a straight line, such as extending a cable route, creating an inline transition or making a joint where sufficient space is available for crimping. The specific application must be determined according to the conductor material and the technical requirements of the electrical system.

This product differs from an SC copper cable lug, which has a terminal palm and bolt hole for connection to equipment. It also differs from a DT solid copper cable lug. Use a connecting tube when joining two conductors directly. Use a lug with a terminal palm when connecting a cable to a busbar or equipment terminal.

How to select a GT-120 Copper Connecting Tube

Confirm the conductor material

The catalog title identifies this product as a copper connecting tube. Do not use a copper tube to connect an aluminum conductor directly unless a suitable transition accessory and approved installation procedure are specified. State clearly whether the conductor is copper or aluminum when requesting a quotation.

Check the actual conductor diameter

Measure the conductor or refer to the cable manufacturer’s data to determine the diameter of the exposed core after insulation removal. This dimension must be compatible with the 15mm internal bore. The connector should allow correct insertion without selecting an unnecessarily oversized tube simply to make installation easier.

Check the crimping die size

The die must be compatible with the 19mm outer diameter, tube construction and crimping tool being used. Do not assign a crimping force or number of crimps unless these values are specified by the product documentation, tool manufacturer or approved installation procedure.

Plan the insulation method

After crimping, the joint must be insulated according to the cable system and installation environment. The insulation material should be selected according to the final joint dimensions rather than only the original cable diameter.

Installation guidance for a through-type cable joint

  1. Disconnect the power supply, verify a safe working condition and identify the two conductor ends to be joined.
  2. Confirm the GT-120 model and check the dimensions d 15mm, D 19mm and L 90mm before installation.
  3. Verify the conductor material, actual core diameter, crimping tool and die compatibility.
  4. Remove the insulation to the length required by the applicable joint design and installation procedure.
  5. Clean the exposed conductor and remove any contamination that could interfere with contact.
  6. Insert each conductor end into the tube from opposite sides while keeping the conductors aligned.
  7. Crimp the connector using a compatible tool and die according to the tool instructions or approved installation procedure.
  8. Check the mechanical retention, crimped profile and conductor condition after crimping.
  9. Complete the insulation and protection of the joint before returning the circuit to service.

Frequently asked questions about GT-120

What are the dimensions of the GT-120 Copper Connecting Tube?

According to the supplied catalog chart, the product has a 19mm outer diameter, 15mm inner diameter and 90mm overall length.

Is GT-120 a bolted cable lug?

No. The drawing shows a straight through-type tube without a terminal palm or bolt hole. It is intended for joining two conductor ends rather than bolting a conductor directly to a busbar or electrical device.

Is GT-120 definitely suitable for 120mm² cable?

The supplied document confirms only the GT-120 model code and dimensions D, d and L. It does not directly specify a compatible cable cross-section. The actual conductor diameter must be compared with the 15mm internal bore before selection.

Can the GT-120 Copper Connecting Tube be used with aluminum cable?

A copper connecting tube should not be used to connect an aluminum conductor directly unless an appropriate transition solution has been specified. Provide the conductor material before selecting the connector.

What information is required for a quotation?

Provide the GT-120 model, conductor material, nominal cable cross-section, actual conductor diameter, required quantity and delivery requirements. These details help verify the specification before quotation.

Request a quotation for the GT-120 Copper Connecting Tube

To request a quotation for the GT-120 Copper Connecting Tube, please provide the required quantity, cable type, conductor material and actual conductor diameter. Trường Phát will compare the application with the confirmed dimensions D 19mm, d 15mm and L 90mm before confirming the specification.


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