High Quality Cable Accessory 66kv Porcelain Bushing Outdoor Termination

• Customization: Available
• Certification: ISO9001
• Protection: Corrosion Resistance
• Model NO.: YJZWC
• Installation: Vertical
• Housing: Porcelain Bushing
• 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: 200.000kg

Product Description

 

Product Description

YJZWC Porcelain Bushing Outdoor Termination
Our company produces two main of porcelain bushing outdoor termination, YJZWC3 andYJZWC4, which are widely used for outdoor high-voltage overhead lines and cable connections with anti-pollution grade of grade III, and grade IV. They are composed of connecting bar, stress cone, porcelain 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 uniformity ability. Porcelain bushing is using high strength inorganic electric porcelain with stable performance. Porcelain bushing is applying skirt structure, and the overall is conical with good performance of pollution flashover resistance, weather resistance, anti-leakage marks, anti-erosion and water repellent ability. The porcelain 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.
Porcelain bushing has a long run safe operation history more than one hundred years in the power industry, which is the best example of a mature use.

1.  Outlet clamp  2. Grading shield  3. Core insulation  
   4.  Polyisobutylene  5. Porcelain 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:
Reasonable structure: high strength inorganic electric porcelain with stable performance. Porcelain bushing is using skirt structure, the overall is conical with good anti-pollution flashover resistance, weather resistance, anti-leakage marks, anti-erosion and water repellent ability. Multiple sealing structure is perfect and effective.

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.