Composite insulators for transformer

Type:HD-25/70-QT-1; Rated voltage:25KV; Specified mechanical bending load:120 KN;

Composite insulators for traction transformer substation

It is produced by superior performance of silicone rubber materials, high strength glass-lined steel pipe, and with a special process to become whole, and has excellent electrical insulation properties and the restoration of insulation performance, excellent performance and anti-pollution properties , also an outstanding performance and avoid unexploded hydrophobic properties.It also has high strength, light weight, easy of installation and maintenance.

Purchase notice:1 The specifications and pattern of the bothside fitting2 The main dimension and rate voltage3 The colour of silicon rubber ,usually it is red or gray4 Other particular requirement

Note: 1 IEC,ANSI,GB and other international stardand is applicable2 it is usually red,gray and white.3 we can design and produce according to the drawings and characteristics

General dimension and characteristics of 25kv composite insulator for traction transformer substation

No.	Fig.	Type	Rated voltage KV	Specified mechanical bending load KN	Section height H, mm	Min arcing  distance h, mm	Large shed diameter D, mm	Small shed diameter d, mm	Shed spacing B, mm	Min nominal creepage distance L, mm	Lighting impulse withstand voltage ≥	Dry power frequency voltage ≥	Wet power frequency voltage ≥	Weight kg
1	45	HD-25/70-QT-1	25	120	620±5	450	128	98	117	1200	300	180	150	2.8
2	45	HD-25/70-QT-2	25	120	740±5	570	128	98	117	1600	360	210	180	3.2

Composite insulators for transformer