GPO-3 fiberglass Sheet Specified for transformer's top-cover and bottom cover
Product Introduction:
GPO-3 sheet or related products are consists of non-alkali glass mat impregnated and boned with an unsaturated polyester resin ,and laminated under high temperature and press,GPO3 sheet offer a superior combination of electrical and mechanical properties such as dielect ric strength ,flame resistance,arc and track resistance,high-flexural and high-impact strength.
our laminates also have superior consistency in thickness, punchability and property control. Add a high degree of quality and cost-ffectiveness.
These sheets are fiberglass reinforced thermoset polyester,They will not melt under heat and have excellent overall electrical properties .all grades are UL Recognized.
Features:
Electrical Insulation :All grades of GPO3 sheet have inherently good dielectrics. They are engineered to maximize the specific properties required for a wide range of electrical applications.
Flame Resistance :GPO3 sheet are UL-rated V-0. They belongs to halogen-free system that generates very low smoke and smoke toxicity in a fire situation.
Mechanical Strength :Our GPO3 sheet have stable mechanical strength wich won’t cracked when machining
Heat Resistance:Our GPO3 sheet have excellent property retention and dimensional stability at elevated temperatures. These laminates have UL temperature index ratings over 150℃
Application:
GPO-3 fiberglass Sheet are widely used in high-voltage appliance insulators, bus bar supports, and barriers and mounting panels in switch gear, as well as other types of electrical applications.
Product Advantages:
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 | --- | good |
GPO-3 fiberglass Sheet Specified for transformer's top-cover and bottom cover
products: | Main transformer (rise), Auxiliary transformer (lower) |
Description: | Main transformer is a kind of total step-down transformer used in transformer station.its mainly function is to adjust the required level of power. Auxiliary transformer is used as a device which powers the the transformer station.It can keep the lights on,executive the high and low switch.executive electric switching operation.supply power for instrumentation and control system.Auxiliary transformer also supply power for city district and wild wellsit. Main famous cooperative enterprises: Siemens,TBEA Co.,Ltd. |