GPO-3 sheet with UL/EN45545/ROHS/REACH and with nice property of machining
GPO-3 sheet is also called UPGM203 sheet , it is the insulation material which was made by unsaturated polyester resin , glass fiber and aluminium hydroxide .
Functions of unsaturated polyester resin is electrical properties such as CTI/Arc resistance /break down voltage and etc.,
functions of glass fiber mat is mechanical properties such as bending strength , compress strength , tensile strength and etc., functions of aluminium hydroxide is filling material and fire resistance , it can meet UL94-V0 of fire resistance.
The glass fiber is the alkali-free glass fiber mat , it will be more save when running in switch cubicle , because some of the cubicle filling sulfur hexafluoride gas . The GPO-3 which we manufacture has certified by UL/ROHS/REACH and EN45545 , all of these certificates will be needed when materials exporting to Europe and North America . For the property of machining , the material can be cut , drill the holes and process on CNC machines .
Features of GPO-3 material :
Impact resistant
It is environmentally friendly material as it is halogen free material .
It has strong strength on tensile and compression
Dimensional stability
Good arc resistance and tracking resistance ,as it meets requirement of CTI600 &Arc resistance 180S
Good flame and smoke characteristics
It has very strong break down resistance and voltage meet 14.3KV/mm
It can be punched to save machining cost if the thickness less than 3mm
It has very low water absorption rate and application to humid environment .
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 | ---- | Red/White/Brown/Grey |
Specific Gravity | IEC 60893-2:2003 | g/cm3 | 1.95-2.05 | |
Water absorption | ISO62:2008 | % | ≤0.5 | |
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 |
Application of GPO-3
As soon as we known , GPO-3 material (include laminated sheet/shapes such as dog bone , corner bone , L shape , U channel ) is widely used in the low voltage electrical industries such as rail transportation, power generation, wind energy, power transmission and distribution, metallurgy, mining, petrochemical, public transportation , photovoltaic and other fields.
GPO-3 always machined into insulating structural parts by CNC as follow products:
a.phase and end barriers,
b.insulating supports,
c.bus bar supports,
d.mounting panels in switch-gear,
e.switch cabinet,
f.motor,
g.frame breaker,
h.safety plate,
i.arcing plate,
j.slot wedge,
k.shifting cover spacer,
l.gasket,
m.cable clamp;