Transformer Bushing for 420kv Higt Voltage

• Application: High-voltage
• Material: Composite Polymer
• Structure: Bushing Insulator
• Type: Rip
• Usage: High Voltage Power Transmission, Insulation
• Connection Method: Trough Type
• Model NO.: CBRGL-420kV FBRGL-420kV
• Size of Bearing Capacity: 4000n
• Certification: ISO9001
• Color: Brown/Grey
• Brand: Chinsun
• Transport Package: Plywood Crates
• Specification: FBRGL-420/2500 CBRGL-420/1600
• Trademark: ChinSun
• Origin: China
• HS Code: 85479090
• Production Capacity: 500

Product Description

420kV RIP & RIS Bushings for Transformer

Rated Phase-to-Earth voltage: 420kV
minute power frequency withstand voltage(dry): 750kV
Partial discharge level at 363kV: ≤5 pC
Tanδ of bushings: ≤0.4%
Lightning impulse withstand voltage(dry): 1550kV
Test tap voltage withstand level: 2kVrms
Minimum total creepage distance: 13020mm
Ambient temperature: -60°С +55°С
Installation height above sea level: ≤1000m
Type of conductor: Bottom connection
Internal insulation: RIP
External insulation/Colour: Porcelain / Brown
Comply with standard: IEC 60137

Transformer bushings technical specifications based on IEC 60137, IEEE CSA C88.1 standards:
 

Key technical parameters-IEC
Standard	IEC 60137-2017
Highest voltage for equipment  Um	kV	24	36	52	72.5	100	123	145	170	245	300	362
Rated frequency	Hz	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60
Dry power frequency withstand voltage 1minute	kV	50	70	95	140	185	230	275	325	460	460	510
Lightning impulse(BIL)	kV	125	170	250	325	450	550	650	750	1050	1050	1175
Switching impulse(SIL)	kV	-	-	-	-	-	-	-	-	850	850	950
Maximum Rated Current	A	5000	5000	5000	4000	4000	4000	4000	3150	3150	3150	3150
Temperature range	ºC	Down to -60°C up to +55°C available on request
Key technical parameters-IEEE
Standard	IEEE C57.19.01-2017
Highest voltage for equipment  Um	kV	25	34.5	46	69	115	138	161	230	345
Rated frequency	Hz	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60	50/60
Dry power frequency withstand voltage 1minute	kV	60	80	105	160	260	310	365	425	520
Lightning impulse(BIL)	kV	150	200	250	350	550	650	750	900	1175
Switching impulse(SIL)	kV	-	-	-	-	-	-	-	-	825
Maximum Rated Current	A	5000	5000	5000	4000	4000	4000	3150	3150	3150
Temperature range	ºC	Down to -60°C up to +55°C available on request