High Performance Insulator Bushings for Switchgear Applications

• Application: High-voltage
• Material: Porcelain
• Structure: Bushing Insulator
• Usage: High Voltage Power Transmission
• Connection Method: Bottom Connection
• Size of Bearing Capacity: 4000n
• Model NO.: FCRG1-100/1250
• Certification: ISO9001
• Color: Brown
• Brand: Chinsun
• Transport Package: Plywood Crates
• Specification: CBRGL-72.5/1250
• Trademark: ChinSun
• Origin: China
• HS Code: 85479090
• Production Capacity: 8500

Product Description

72.5kV RIP & RIS Bushings for Transformer:

Rated Voltage - 72.5kV

Rated Current - 630A to 3150A

BIL- 325kV peak value

Power frequency Withstand Voltage - 155kV r.m.s.value

Partial discharge ≤ 5 pC

Dielectric dissipation factor (tanδ)≤0.4%

Seismic Condition meets with IEC TS 61463

Test tap can be designed to 2 pieces quantity.

External Insulation type: Grey polymer (silicone rubber with Uv protection) & brown Pocelain.




72.5kV polymer (silicone rubber) draw lead type transformer bushing's drawing:

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	420	550
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	50/60	50/60
Dry power frequency withstand voltage 1minute	kV	55	77	105	155	205	255	305	355	505	505	560	750	870
Lightning impulse(BIL)	kV	125	170	250	325	450	550	650	750	1050	1050	1175	1550	1800
Switching impulse(SIL)	kV	-	-	-	-	-	-	-	-	850	850	950	1175	1300
Maximum Rated Current     (Draw-lead/removeable rod)	A	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000	1250/ 2000
Maximum Rated Current  (Solid conductor)	A	4000	4000	4000	3150	3150	3150	3150	3150	3150	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	500
Rated frequency	Hz	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	60	80	105	160	260	310	365	425	520	750
Lightning impulse(BIL)	kV	150	200	250	350	550	650	750	900	1175	1675
Switching impulse(SIL)	kV	-	-	-	-	-	-	-	-	825	1175
Maximum Rated Current  (Draw-lead/removeable rod)	A	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000	800/ 2000
Maximum Rated Current     (Solid conductor)	A	5000	5000	4000	4000	3000	4000	3000	5000	3000	3000
Temperature range	ºC	Down to -60°C up to +55°C available on request