The combination of optimum mechanical and physical properties of fibrous materials with high dielectric strength of impregnating compounds led to emergence of a whole class of electrical insulators including:
Silk-, caprone-, glass-based and oil-, polyester-, silicone-, and other binders-impregnated electrical insulation varnish cloths;
Paper-, cotton- and glass-based plastic laminates of different insulation class, cloth-laminated rods, profiled fiberglass-reinforced plastics;
Paper-bakelite and epoxy-phenolic glass tubes and barrels, solid insulation frames for high-voltage bushings, heat-resistant tubes and barrels.
Various materials of this class are widely applied in electrical machinery industry, electrical accessory and instrument making, radio engineering, in manufacturing tape- and laying pad-shaped conducting wires and cables, insulation and construction details for different operating environments and climatic service conditions.
The Ukrpromvnedrenie Company offers a wide array of impregnated fibrous materials, plastic laminates and winding products of traditionally high quality produced by ‘Electroisolit’ CJSC.
Varnish cloths and varnished glass cloths
Product
Dimensions
Composition
Thermal class, °С
Application
Shelf life, mon.
LSHM, LSHMS varnish cloth ТУ 16-90И37.0012.002 ТУ
(600-1100)±2,5% mm.-wide fabric bolts. Thickness 0,06-0,15 mm.
Silk fabric, oil binder resin
105
Electrical machines and apparatuses flexible insulator. LSHMS may be used with transformer oil and is noted for its high-performance dielectric capacities.
6
LKM, LKMS varnish cloth ТУ 16-90И37.0012.002 ТУ
(600-1100)±2,5% mm.-wide fabric bolts. Thickness 0,06-0,15 mm.
Capron fabric, oil binder resin
105
Electrical machines and apparatuses flexible insulator. LKMS may be used with transformer oil and is noted for its high-performance elasticity and dielectric capacities.
6
LSM, LSMM varnished glass cloth ТУ 16-90И37.0003.003 ТУ
(690-1140)±2,5% mm.- wide fabric bolts. Thickness 0,15-0,20 mm.
Glass cloth, oil binder resin
120
Electrical machines and apparatuses flexible insulator. LSMM is oil-resistant.
6
LSM-1 varnished glass cloth ТУ 3491-079-05758799-2002
(690-1140)±2,5% mm.- wide fabric bolts. Thickness 0,15-0,20 mm.
Glass cloth, oil binder resin
120
Electrical machines and apparatuses flexible insulator, used for electrical composite manufacturing.
6
LSR-1 varnished glass cloth ТУ 3491-079-05758799-2002
(690-1140)±2,5% mm.- wide fabric bolts. Thickness 0,12-0,17 mm.
Glass cloth, polyester binder resin
155
6
LSK-1 varnished glass cloth ТУ 3491-079-05758799-2002
(690-1140)±2,5% mm.- wide fabric bolts. Thickness 0,12-0,20 mm.
Glass cloth, silicone binder resin
180
6
LSKL varnished glass cloth ТУ 16-90И37.0003.003 ТУ
10; 15; 20; 25; 30 mm.-wide rollers. Thickness 0,12-0,15 mm.
Glass cloth, silicone binder resin
155
Electrical machines and apparatuses flexible insulator, possesses viscosity.
6
LSTR varnished glass cloth ТУ 3491-075-05758799-2002
Thickness: STEF-U 0,35-100 mm. STEF-Т 0,2; 0,3 mm. STEF 1,5-50 mm. STEF-1 0,5-50 mm.
Glass cloth, epoxy phenol binder resin
155
Electrical components manufacturing, used in the open air under conditions of: - normal relative humidity at (15-35)°С 45-75% and over 1000 V voltage; - high humidity at (93±2)%, t = (40±2)°С at under 1000 V voltage and 50 Hz current frequency. Noted for their high mechanical performance at moderate temperature, high electrical properties stability at high humidity. STEF-1 is distinguished by more homogeneous shallow internal and surface structure. ST-ETF is distinguished by increased heat resistance.
30
STEF-Т fibreglass laminate ТУ 05758799-028-97
30
STEF*, STEF-1 fibreglass laminate ГОСТ 12652-74
18
ST-ETF fibreglass laminate ГОСТ 12652-74
(930±20)х(1430±20) mm.–sized sheets. Thickness 0,35-50 mm.
180
18
STT heat-resistant fibreglass laminate ТУ 2296-103-05758799-2003
(1430±50)х(920±50) mm.-sized sheets. Thickness 0,35-50 mm.
Glass cloth, epoxy binder resin
180
Electrical machines manufacture insulation.
30
STEB fibreglass laminate ГОСТ 12652-74
(930±20)х(1430±20) mm.-sized sheets. Thickness 1,5-50 mm.
Glass cloth, epoxy brominated binder resin
140
Electrical components manufacturing, used in the open air under conditions of: - normal relative humidity at (15-35)°С 45-75% and over 1000 V voltage; - high humidity at (93±2)%, t = (40±2)°С at under 1000 V voltage and 50 Hz current frequency. Lowered flammability.
A, B cloth-based laminate ГОСТ 2910-74 ТУ 05758799-014-96 (for over 50,0 mm. thickness)
(800-950)х(1430±35) mm.-sized sheets Thickness: 0,5-50 mm. 60-100 mm.
Cotton fabric, phenol formaldehyde binder resin
105
Electrical components manufacturing, used in transformer oil and in the open air under conditions of normal relative humidity of 45-75% at (15-35)°С temperature and 50 Hz current frequency.
18
PTK constructional cloth-based laminate ГОСТ 5-78
(800-950)х(1430±35) mm.-sized sheets. Thickness 0,5-80 mm.
Cotton fabric, phenol formaldehyde binder resin
105
Gear, worm, ring gear and friction bearing manufacturing.
36
PT ornamental cloth-based laminate ГОСТ 5-78
(800-950)х(1430±35) mm.-sized sheets. Thickness 0,5-80 mm.
Cotton fabric, phenol formaldehyde binder resin
105
Manufacture of the same components to which PTK cloth-based laminate is applied though low-tension ones.
36
LG lavsan micartalaminate ТУ 16-503-224-82
(450-950)х(700-1480) mm.-sized sheets. Thickness 0,5-50 mm.
Lavsan paper, epoxy phenol binder resin
150
Electrical components manufacturing, used in the open air at (15-35)°С 45-75%, as well as at (40±2)°С (93±2)% without additional moisture protecting varnish coating.
Miscellaneous (rectangular, trapezoidal, circular, semi-circular, segmentary) cross-section bar procurement. Length, min. 1500 mm. Cross-section dimensions and configuration are agreed at procuring. Cross-section dimensions: height 2,0-6,0 mm., width 4,2-16,0 mm.
Glass strand roving, polyesterimide compound
180
As slot wedges for electrical machines.
18
SPP-E ТУ 2296-051-05758799-00
Miscellaneous (rectangular, trapezoidal, circular, semi-circular, segmentary) cross-section bar. Length, min. 1500 mm. Cross-section dimensions and configuration are agreed at procuring. Cross-section dimensions: height 2,5-15,0 mm., width 3,7-30,0 mm.
Glass strand roving, epoxy compound
155
As slot wedges for electrical machines.
12
SPP-EU ТУ 16.503.180-78
1500±50 mm. bar procurement . Cross-section dimensions: height 3,0-6,0 mm. width 10-16 mm.
Glass strand roving, epoxy compound
155
As slot wedges for electrical machines, inc. for main line diesel locomotive and electrical locomotives’ traction motors.
