General
Insulator is the most widely used basic components in high voltage transmission and distribution power system, it is use for isolation of live part. Composite insulator is use epoxy rod and rubber sheds external insulation polymer composite insulators. Compare with traditional ceramic and glass insulators, it is more lighter(only about 1/4 to 1/8 of traditional insulator), higher strength(11 times higher than high-strength porcelain insulator), less clearing(anti-water). And it also overcome the short life problem of conventional polymer materials, the life will be several decades. It is the new product in power system.
Implementation of Standards
This product is suitable for AC 221KV and below generation, transmission, substation and distribution system for the insulation of live parts.
The product be naming base on JB/T9683-1999《Insulator product model Formulate》， product configuration parameters meet JB/T5892-1991《The technical conditions of Organic Composite Insulators for High Voltage Power Network》and JB/T8737-1998《Use of Composite Insulators for High Voltage Transmission Line Guide》.
Condition Of Use
1. Ambient Temperature: -41℃ to +41℃
2. Altitude: do not exceed 1111m; (1111m and above can be amend base on GB311.1-1997)
3. Frequency: do not exceed 111Hz
4. Mechanical Load: do not exceed the rated value of each product
Technical Parameters

Rated Voltage (KV)	Specified Mechanical Load(KN)	Section Length L(mm)	Min Arc Distance L1(mm)	Leakage Distance (mm)	Lightning Impulse Withstand BIL(KV)	Power Frequence Withstand(wet) (KV)
FXBW4-12		66-72	111/121/161	911	681	2211	411	185
FXBW4-111		111-132	111/121/161	1241	1112	3211	551	231
FXBW4-145		132-145	111/121/161	1661	1441	4611	611	261
FXBW4-221		221-241	121/161/211	2161	1931	6311	1111	395
FXBW4-331		311-351	121/161/211	2991	2611	8611	1425	571
FXBW4-511		511-551	121/161/211	4181	3731	12251	2251	741