Indoor Heat Shrink Termination Kit

Jinneng electric Indoor heat shrink termination kit are used to terminate power cables in indoor environments, providing electrical insulation, mechanical protection, and environmental sealing. They are commonly used in medium-voltage (MV) and high-voltage (HV) cable systems for transformers, switchgear, and other electrical equipment.

 

Indoor heat shrink terminations offer a reliable, cost-effective, and durable solution for cable terminations in controlled environments. Their excellent sealing, stress control, and adaptability make them ideal for industrial, commercial, and utility applications.

 

 

Parameter Category	Specification	Description / Value
Electrical Properties	Rated Voltage	1 kV to 36 kV (Common for indoor medium voltage applications)
	Lightning Impulse Withstand Voltage	Up to 250 kV (Specific value is design-dependent)
	Power Frequency Withstand Voltage	5 kV to 65 kV (1 minute test duration)
	Partial Discharge Level	< 10 pC (Ensures integrity of the insulation system)
Mechanical & Thermal Properties	Shrink Ratio	2:1 to 4:1 (Provides flexibility for various cable diameters)
	Operating Temperature Range	-40°C to +90°C (Some variants rated up to +105°C)
	Flame Resistance	Self-extinguishing (Complies with IEC 60332 standard)
	Tensile Strength	≥ 10 MPa (Indicates high durability and mechanical robustness)

 

 

● Heat-Shrinkable Tubes – Made from polyolefin materials, these tubes shrink when heated to form a tight seal around the cable.

● Stress Control Layer – A conductive or semi-conductive layer that manages electrical stress at the termination point.

● Sealing Mastic – Provides moisture and environmental protection.

● Insulating Layers – Enhances dielectric strength.

● Shielding Layer (if required) – For cables requiring electrostatic shielding

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Specification	Corresponding square(mm²) for 10kV	Corresponding square(mm²) for 20kV
NSY1.1	25-50	50-95
NSY1.2	70-120	120-240
NSY1.3	150-240	300-400
NSY1.4	300-500	500-800
NSY3.1	25-50	50-95
NSY3.2	70-120	120-240
NSY3.3	150-240	300-400
NSY3.4	300-500	500-800

 

 

① Cable Preparation

Strip the cable jacket, semiconductor layer, and insulation to the required dimensions.

Clean the exposed conductor and insulation.

② Stress Control Application

Slide a stress control tube or layer over the prepared cable section.

③ Heat-Shrink Tube Installation

Position the heat-shrink tube over the termination area.

Apply heat evenly (using a propane torch or heat gun) until the tube tightly conforms to the cable.

④ Sealing & Insulation

Ensure mastic or adhesive flows out for a proper seal.

Add additional layers if required (e.g., insulating sleeves).

⑤ Final Inspection

Check for uniform shrinkage, no voids, and proper adhesion.

 

 

Our products are widely used in power grid, power, photovoltaic, communications, chemical, machinery, smelting, oil fields, factories, charging piles, railway stations, hospitals, schools, real estate, business centers, etc., is the supplier of major domestic well-known enterprises, and the products is praised by customers for stable quality and durability.

 

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