High Performance 72.5kV Wall Bushing Insulator

• Customization: Available
• Application: High-voltage
• Material: Porcelain
• Model NO.: FCRG1, CRG1
• Structure: Bushing Insulator
• Usage: High Voltage Power Transmission
• Connection Method: Trough Type
• Size of Bearing Capacity: 4000n
• Certification: ISO9001
• Color: Brown
• Brand: Chinsun
• Transport Package: Plywood Crates
• Specification: CRG1-72.5/630
• Trademark: ChinSun
• Origin: China
• HS Code: 85479090
• Production Capacity: 8500

Product Description

72.5 kV Wall Bushings

Rated voltage (Ur): 69 kV
Maximum operating voltage (Um): 72.5 kV
Rated frequency: 50/60 Hz
Rated current: 630 A
1-minute power-frequency withstand voltage (dry): 140 kV
Partial discharge level at Um: ≤5 pC
Tanδ of bushings: ≤0.4%
Lightning impulse withstand voltage (dry): 325 kV
Rated thermal short-time current, 1 sec (Ith): 15.75 kA
Rated dynamic current (Id): 39.375 kA
Material of conductor: Aluminum (AL)
Test tap voltage withstand level: 2 kVrms
Creepage distance (outdoor): not less than 2240 mm
Creepage distance (indoor): not less than 1990 mm
Installation angle: 0-90°
Altitude above mean sea level: ≤1000 m
Test cantilever load: 2000N
Ambient temperature range: -30°C to +55°C
Internal insulation: Resin Impregnated Paper (RIP)
External insulation/Colour: Porcelain covered with Polymeric Room Temperature Vulcanizing (PRTV) silicone rubber / Brown
Compliance with standard: IEC 60137

Company name: Shandong Chinsun Electrical Equipment Co., Ltd.




 

Key technical parameters-IEC  60137-2017
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 C57.19.01-2017
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