110kv Straight Through Joint/ Insulating Joint Kits

• Customization: Available
• Type: Cold Shrinkable
• Material: Silicone Liquid Rubber
• Model NO.: YJJTZ
• Application: Transmission of Electrical Signals
• Character: Cold Shrinkable
• Species: Terminal
• Production Process: Cold Pressing
• Shape: Other
• Interface Type: Other
• Certification: IEC
• Brand: Cyg
• Transport Package: Wooden Case
• Specification: 630mm2
• Trademark: CYG
• Origin: China
• HS Code: 8535900090
• Production Capacity: 50000sets/Year

Product Description

Introduction on Cable Accessories for 48/66~290/500kV  
48/66kV~290/500kV high voltage cable accessories can be classified as porcelain bushing outdoor termination, composite bushing outdoor termination, full-prefabricated soft dry type outdoor termination, GIS termination, full-prefabricated silicone rubber straight through /insulating joint, assembled joint applied to any cross section, single-phase type and three-phase type for fully dry insulating branch joint, grounding box, and grounding protection box, interconnected box and sheath protector, etc.

4E-YJJTI,4E-YJJJI Fully Prefabricated Silicone Rubber Insulated Straight Through/Insulating Joint
The company produces two main 4E-YJJTI,YJJJI fully prefabricated silicone rubber insulated straight through/insulating joint, 4E-YJJTI and 4E-YJJJI, applied to connection between the two identical section or similar section of the cable. They are composed of prefabricated insulating body (stress cone included), metal protective shell, and fiberglass outer protective shell. The main body of prefabricated soft silicone rubber is using imported liquid silicone rubber injection rubber molding soft dry structure, which has long-term stability of lasting hold power and electric field uniform ability. Metal protective shell ring is composed with two different lengths of metal tail tube and insulating tuber, filled with insulating sealant inside, and covered with sealing insulation.

For different work environment and users' specified requirement, metal protective shell and fiberglass outlet shell are optional. Without water damage, mechanical damage, or corrosion, outer metal protective shell and fiberglass free are better for heart dissipation of the product to ensure a long life.

1. Glass fiber reinforced plastics shell  2. Copper shell  3. Stress cone  4.  Cable insulation  5. Epoxy insulating parts  6. Connecting tube  7. Screen tile  8. Prefabricated main body  9. Coaxial cable  10. Cable

 

 

Size mm	48/66kV	64/110kV	80/138kV	127/220kV
L	1600	1600	1632	1760
A	2000	2100	2200	2400

Main structure features:
Compact structure: silicone rubber parts is using fully prefabricated rubber insulator with small size compact structure, straight through and insulating joints share the same preform.
Easy installation: using advanced dual installation, one machine to expand, another shrinkable in connection cable, greatly improved installation efficiency, reducing the labor.

1-500kV Cable Accessories Electrical Performance Parameter
1~500kV cable accessories common parameters and factory test specification
Voltage levels provided by our company include 1kV, 10kV, 35kV, 48/66kV, 56/78kV, 64/110kV, 76/132kV, 127/220kV, and 290/500kV in accordance with IEC60502, IEC60840, IEC62067, IEC60859, IEC62271-209, GB/T11017, GB/Z18890, GB/T22078, GB/T12706, GB311, GB772, BS EN 50181, IEEE386, DL508, DL509, JB/T8144 standards, and pass through rigorous factory test, type test, and pre-identification test (220kV and above).
Test name and code

Test classifications and code:

No.	Test Name	Code
1	Routine test	R
2	Sampling test	S
3	Type test	T
4	Pre-identification test	P
5	Additional test	A

Routine test for each of the stress cone, GIS epoxy bushing, and straight through joint prefabricate main body of 66kV and above cable accessories:

Item	66kV	110kV	220kV
Partial discharge	72kV, partial discharge not more than previously carried out items	96kV, partial discharge not more than previously carried out items	190kV, partial discharge not more than previously carried out items
Power frequency withstand voltage	120kV/30min (joint main body 60min, no flashover no breakdown)	160kV/30min (joint main body 60min, no flashover no breakdown)	318kV/30min (joint main body 60min, no flashover no breakdown)
Seal test	0.25±0.01MPa/1h for sealing fittings, porcelain bushing, composite bushing, no leakage
	0.6~0.7MPa/1h for epoxy bushing, no leakage
Appearance test	No damage, no cracking and other defects that affect the quality and appearance