High Quality Cable Accessory 66kv Fully Prefabricated Type Insulating Joint

• Customization: Available
• Certification: ISO9001
• Protection: Corrosion Resistance
• Model NO.: YJJI
• Installation: Vertical
• Housing: Copper
• Standard: IEC
• Color: Black
• Voltage: 38/66kv
• Material: Liquid Silicone Rubber
• Transport Package: Wooden Case
• Specification: 240-1600mm2
• Trademark: dongfeng
• Origin: China
• HS Code: 8535900090
• Production Capacity: 50000/Year
• Package Size: 162.00cm * 40.00cm * 50.00cm
• Package Gross Weight: 200.000kg

Product Description

 

Product Description

4E-YJJJI Fully Prefabricated Silicone Rubber Insulated Straight Through/Insulating Joint
Our 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.


Type test and pre-identification test on 66~220kV cable accessories:

Item	Test requirement			Test type	Products type
	48/66	64/110	127/220		Porcelain bushing	Composite busing	GIS termination	Straight through/ Insulating joint	Soft dry type termination
Sealing fittings, porcelain bushing, composite bushing	0.25±0.01MPa/1h, no leakage			R	P	P	P	-	-
Epoxy bushing	0.6~0.7MPa/1h, no leakage
Prefabricated body partial discharge test	72kV	96kV	190kV	R	P	P	P	P	P
	Partial discharge in the background
Prefabricated body power frequency withstand voltage test	120kV	160kV	318kV	R	P	P	P	P	P
	30min, no flashover no breakdown
Partial discharge test at ambient temperature	72kV	96kV	190kV	T	P	P	P	P	P
	Partial discharge in the background
Thermal cycling voltage test	96kV	128kV	254kV	T	P	P	P	P	P
	20 cycles, no flashover no breakdown
Partial discharge at high temperature	72kV	96kV	190kV	T	P	P	P	P	P
	Partial discharge in the background
Lighting impulse voltage test and the subsequent power frequency withstand voltage test	450kV	550kV	1050kV	T	P	P	P	P	P
	10 times, no flashover no breakdown
	120kV	160kV	318kV
	15min, no flashover no breakdown
Immersion voltage test on outer protective sheath of direct-buried joint	60/75kV impact both ends, 30/37.5kV impact one end to the ground		60/95kVimpact both ends, 30/47.5kV impact one end to the ground	T	-	-	-	P	-
Sealing test after installing accessories	0.25±0.01MPa/1h, no leakage			T	P	P	P	P	P
Outdoor termination frequency voltage test in rain	140kV	185kV	460kV	T	P	P	-	-	P
	1min, no flashover no breakdown
Post insulator voltage test	20kV/1min, no flashover no breakdown			T	P	P	-	-	-
Outdoor termination radio interference test	61kV	81kV	140kV	A	P	P	-	-	P
	1MHz radio interference, voltage≤450μV		1MHz radio interference, voltage≤500μV
Accessories sample test	Detect accessories system, no significant errors effect operating			T	P	P	P	P	P
DC voltage test	/		20kV/1min between inner conductor and metallic screen of joint, no breakdown	T	-	-	-	P	-
Conductor connecting pole (tube) pressure welding fitting performance test	After crimping, the total resistance is not 1.2 times more than the same length and cross sectional area of conductor			T	P	P	P	P	P

CERTIFICATE

Type test report and KEMA report for 1kV to 220kV cable accesories
 

 

TEST AND PRODUCTION EQUIPMENT

1000kV ultra-high voltage test hall, 500kV high voltage test hall, fully automatic rubber injection molding system, 100000 level dust-free workshop
 

COMPANY PROJECTS

Our company's business and services span across dozens of provinces and cities nationwide, and we also export to international markets, including Australia, Peru, South Africa, Russia, the United States, Cyprus, New Zealand, Bangladesh, Tanzania, and more. We have gained significant recognition and reputation both domestically and internationally. In recent years, the company has been continuously enhancing its quality management and service systems. We are not content with our current achievements; instead, we strive for continuous progress, consistently reaching new milestones.