Horizontal Line Composite Insulator

KEY WORDS:High pressure vacuum switch




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(10 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 220KV 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: -40℃ to +40℃
2. Altitude: do not exceed 1000m; (1000m and above can be amend base on GB311.1-1997)
3. Frequency: do not exceed 100Hz
4. Mechanical Load: do not exceed the rated value of each product


Technical Parameters

Code No Rated Voltage
Specified Mechanical
Section Length
Min Arc Distance
Leakage Distance
Lightning Impulse
Withstand BIL(KV)
Power Frequence
Withstand(wet) (KV)
FZSW-12 10-15 12.5 380 148 355 75 42
FZSW-24 24-27 8/12 485 300 850 150 65
FZSW-35 35-38 6/8/12 555 369 1050 185 95
FZSW-66 66-72 6/8/12 960 650 1800 410 185
FZSW-132 110-145 6/8/12 1450 1210 3210 600 300

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