High Quality Cable Accessory 66kv Composite Bushing Outdoor Termination

• Customization: Available
• Certification: ISO9001
• Protection: Corrosion Resistance
• Model NO.: YJZWF
• 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 * 100.00cm
• Package Gross Weight: 100.000kg

Product Description

 

Product Description

YJZWF Composite Bushing Outdoor Termination
Our company produces two main of composite casting outdoor termination, YJZWCF3 and YJZWCF4, which are widely used for outdoor high-voltage overhead lines and cable connections with anti-pollution level of III and IV. They are composed of termination, stress cone, composite casting bushing, and tail tube. We use imported liquid silicone rubber injection molding to make stress cone, which has long-term stability of lasting hold power and electric field uniform ability. Composite casting bushing is using skirt structure with high strength epoxy fiberglass insulation tubes coated with silicone rubber. The composite casting bushing is filled with insulating oil with excellent electrical insulation properties, and the mutual dissolution or penetration is as low as 1/1000 between silicon stress cone to ensure the long-term safe operation of the product. Our product is using multiple sealing structure which can effectively prevent the leakage of water immersion and insulating oil. All of the seals are using imported NBR or silicon rubber material. All of the fastener raw-material are stainless steel with good waterproof seal performance.

 

1.  Outlet clamp  2. Grading shield  3. Core insulation  
   4.  Polyisobutylene  5. Composite bushing  6. Stress cone  7. Fixed plate  8. Support insulator  9. Tail pipe  10. Cable

Size mm	48/66kV	64/110kV	80/138kV	127/220kV
H	1270	1500	1750	2500
A	1510	1935	2085	3100
B	1925	2155	2400	3600
Creepage distance	≥2248	≥3906	≥4495	≥7812

Main structure features:
Mechanical: mechanical strength of the inner layer is epoxy fiberglass which is better than porcelain bushing, with better mechanical performance.
Explode proof: silicon skirt layer covering outer is soft, effectively avoid or greatly reduce the damage after an explosion caused by personal or adjacent equipment, with better security than the porcelain bushing in densely populated areas.
Transportation: the weight of composite casting bushing is less than 1/5 of porcelain bushing weight. The excellent mechanical strength inner and soft outer layer is more compression resistance to collapse, effectively reducing the transportation and installation cost.
Weather resistance: silicon rubber outer layer has excellent weather resistance, stain-resistance self-cleaning ability, UV and aging resistance. IEC60815 clearly shows that the porcelain bushing creepage distance is only 17mm/kV, slightly higher than the level of anti-I, while the silicon rubber creepage ration distance is up to 25mm/kV, reach the level of anti-III.
Cleaning free: silicone rubber has excellent water repellency with good self-cleaning ability, basic free blackout manual cleaning (porcelain blackout cleaning rate is generally once a year), greatly reduce the maintenance costs.

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.