High strength of electrical and mechanical GPO3 (UPGM203) machined parts meet CIT600
GPO3 (UPGM203) is the insulation material which was composited with glass fiber , unsaturated polyester and aluminium hydroxide , it was pressed under the high temperature . It has good electrical property under high humidity and high mechanical property by medium temperature, quite nice fire retardant property, good arc resistance and tracking resistance.
This material can meet requirement of continue running under the F grade temperature , that is means it has high strength of mechanical when operating under condition of 155℃ ,it also have nice properties under low temperature . The material has been passed testing under -270℃, the report was shared by famouse company on top 500 in the world .
Features of GPO3(UPGM203)
Electrical Insulation : All of GPO3 sheet with very strength on break down voltage , the strength meet more than 14kv/mm .
Flame Resistance :GPO3 material and machined parts with nice fire resistance , it meets UL94-V0.
It is the green material , it belongs to halogen-free material and very low smoke and smoke toxicity in a fire situation.
Mechanical Strength : Our GPO3 sheet have stable mechanical strength not easy when machining by CNC
Heat Resistance: The GPO3 material with excellent property retention and dimensional stability at high temperatures. The was certified by UL under the high temperature .
|Hong Cheng Grade||HC-GPO3|
|IEC 893 / EN 60893 Grade||UP GM 203|
|DIN 7735 Grade||HM 2471|
|ANSI (NEMA) Grade NEMA LI-1||GPO-3|
|Items||Test Method||Unit||Typical Values|
|Physical Properties||Color||Visual inspection||----||
|Specific Gravity||IEC 60893-2:2003||g/cm3||1.95-2.05|
|Mechanical properties||Tensile Strength||IEC 60893-2:2003||Mpa||≥130|
|Compressive strength||IEC 60893-2:2003||≥300|
|Flexural Strength||IEC 60893-2:2003||≥180|
|Impact strength||IEC 60893-2:2003||KJ/m2||≥60|
|Electrical properties||Volume Resistivity||IEC 60093:1980||Ω·m||≥ 1.0 x 1010|
|Surface Resistivity||IEC 60093:1980||Ω||≥ 1.0 x 1012|
|Electric Strength ┴||IEC 60893-2:2003||kV/mm||≥ 12|
|Breakdown Voltage //||IEC 60893-2:2003||kV/25mm||≥ 80|
|Arc Resistance||IEC 61621:1997||sec||≥180|
|PTI Proof Tracking Index PTI||IEC 60893-2:2003||---||≥600|
|Dielectric Constant||IEC 60893-2:2003||---||4.0-5.0|
|tgδ Dissipation Factor||IEC 60893-2:2003||---||≤0.03|
|Thermal properties||Coefficient of Thermal Expansion||ASTME 228-11||1/K||≤2x10-5|
|Temperature Index||IEC 60085:2004||℃||155|
|Flame Resistance performance||Oxygen Index||ISO 4589-2:1996||%O2||≥ 30|
|Flame Resistance||IEC 60893-2:2003||---||V-0|
|Toxicant(Emission halogen etc.)||E662||---||Low|
|Other properties||The anti microbial properties of bacteria||G21-G22||---||good|
Application of GPO-3 material
It is widely used in the low voltage electrical industry in the European and American countries.
1. Mould case circuit breaker
2. safety door
3. arc plate
4. slot wedge, shifting cover spacer ,gasket
5. insulation support in switch cabinet
6. bus-bar clamp
7. Clamp Connector
8. Top cover and bottom cover in transformers .
Advantages of material and machining :
1. GPO3 material can be machined by CNC and tolerance can meet ISO2768-F ;
2. We have a senior R&D engineers team and the team have the ability in designing the fixture independently to meet production requirements of high precision;
3. The company have hundred of CNC machining center (with tool storage) , machines can be used to machine multi step processes of complex parts at one-time;