The suspension composite insulator for electrified railway contact net consists of three parts: a mandrel, an outer insulation and a metal attachment. It shall comply with the standard of TB/T3199.2-2008 《Insulators for electrified railway contact nets - Part 2: Rod composite insulators》.

It can be widely used in areas with different pollution levels, with light weight, small volume, not easy to break, high tensile strength and strong pollution resistance.

Type	Rated voltage (kV)	Rated bending load (KN)	Structure height (mm)	Insulation distance (mm)	Min nominal creepage distance (mm)	Lightning full wave impulse withstand voltage (kV)	Power frequency dry withstand voltage (kV)	Frequency withstand voltage ≥((kV))	IMG
FQD-25/20-BY-A1	25	20	750	490	1250	330	195	165	T-X
FQD-25/20-BY-A2	25	20	820	560	1600	360	210	180	T-X

Type	Rated voltage (kV)	Rated bending load (KN)	Structure height (mm)	Insulation distance (mm)	Min nominal creepage distance (mm)	Lightning full wave impulse withstand voltage (kV)	Power frequency dry withstand voltage (kV)	Frequency withstand voltage ≥((kV))	IMG
FQD-25/20-EB-1	25	20	685	465	1200	300	180	150	T-X
FQD-25/20-EB-2	25	20	800	580	1600	360	210	180	T-X

Type	Rated voltage (kV)	Rated bending load (KN)	Structure height (mm)	Insulation distance (mm)	Min nominal creepage distance (mm)	Lightning full wave impulse withstand voltage (kV)	Power frequency dry withstand voltage (kV)	Frequency withstand voltage ≥((kV))	IMG
FQD-25/20-EY-C1	25	20	1380	600	1400	300	180	150	T-X
FQD-25/20-EY-C2	25	20	1450	700	1600	360	210	180	T-X