Durable Polyester Composite Sheet for Motor Insulation with Excellent Mechanical and Thermal Stability Gpo-3 Insulation Sheet
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Product Highlights
- Excellent Electrical Insulation: Good electrical property under high humidity and high mechanical property under medium temperature.
- High Mechanical Strength: Can be machined, punched, drilled, milled, sawn, sanded, sheared or routed easily.
- Fire Retardant & Safe: Features fire retardant property, good arc resistance and tracking resistance, UL94V0 level.
- Wide Voltage Range: Maximum voltage rating from 20KV to 100KV for various low voltage electrical industries.
- Customizable Options: Supports customization from samples, designs, and full customization for specific needs.
- Versatile Applications: Widely used in motor, switch cabinet, transformer, and electric machinery industries.
- Easy Assembly: Assembly by bonding, metal screws or rivets are possible for convenient installation.
Product Attributes
- Customization
- Available
- Application
- Electronic Device
- Color
- Red
- Model NO.
- GP0-3 Insulation Boards
- Material
- Insulation Sheet
- Maximum Voltage
- 20KV~100KV
- Thermal Rating
- B 130
- Thickness
- 2-30mm
- Tensile Strength
- 100MPa
- Temperature Grade
- F Class
- Density
- 1.9 g/cm3
- Resin
- Thermosetting Resin
- Specification
- 1020X2020mm
- Trademark
- YouDa
- Origin
- Liaoning, China
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Durable Polyester Composite Sheet for Motor Insulation with Excellent Mechanical and Thermal Stability Gpo-3 Insulation Sheet
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Product Description
Made:
Alkali free glass fiber felt unsaturated polyester resin
Application
Electrical Insulation: GPO3 has good electrical property under high humidity and high mechanical property under medium temperature, fire retardant property, good arc resistance and tracking resistance.
Mechanical Strength: It can be machined, punched, drilled, milled, sawn, sanded, sheared or routed. Assembly by bonding, metal screws or rivets are also possible.
It is widely used in the low voltage electrical industry in the European and American countries.
1. frame breaker
2. safety plate
3. partition
4. arcing plate
5. slot wedge, shifting cover spacer ,gasket
6. motor
7. switch cabinet
8. pull rod
3.Technical parameter:
|
No. |
Index name |
Unit |
Index |
|
1 |
Bending Strength |
MPa |
≥180 |
|
2 |
Impact Strength |
KJ/m2 |
≥60 |
|
3 |
Adhesive strength |
N |
≥3800 |
|
4 |
Dielectric strength |
MV/m |
≥12 |
|
5 |
Arc resistance |
s |
≥180 |
|
6 |
Scratch index |
V |
≥600 |
|
7 |
Breakdown Voltage |
KV |
>42 |
|
8 |
Density |
g/m3 |
1.85-2.1 |
|
9 |
Dielectric loss factor |
|
≤0.06 |
|
10 |
Relative dielectric constant |
|
≤4.5 |
|
11 |
Insulation resistivity(Immersion24h) |
Ω |
≥1.0x1012 |
|
12 |
Thermal deformation temperature |
ºC |
≥240 |
|
13 |
Water absorption D-24/23 |
|
≤0.15 |
|
14 |
PAP hardness |
|
≥50 |
|
15 |
Combustibility |
level |
UL94V0 Ignition time ≥75s Burning time ≤85s |






Shenyang Youda Insulation Materials - Insulation Material Specialist for supporting Transformer and Electric machinery. Shenyang Youda Insulation Materials Co., Ltd. was founded in 1990, private high-tech enterprise with R&D, production, sales, and exporting.
Our company is specialized in producing, processing, selling different kinds of insulation materials, such as laminated boards, bars, tubes, molded products, composite materials, dipping materials, insulating paper, insulating ribbon, insulation varnish, mica products, engineering plastics. Our products are widely used for transformer, electric machinery, mutual inductor, electric reactor, heavy industry machinery, mine, railway, aerospace and so on.
Our company takes the core value of technology - leading, supreme customers, honesty and trustworthiness. Safety production, quality guaranteed, eco-friendly material is our promise. All the staff in Youda will provide high-quality products and best service for domestic and abroad customers through our exquisite technology and our best work style.

(1). Q: Can you give me a discount price?
A: It is depending on the volume.
(2). Q: Why is your price higher than other suppliers?
A: We can offer the products of different quality levels depends on customer's target price and quality requirement.
(3). Q: How can I get a sample?
A: Non custom samples are free of charge. You only pay for the goods. We promise to deliver the sample within 48 hours.
(4). Q: How can you guarantee the quality of mass production is same with the sample sent to me before?
A: Our process will base on the samples which is the same as yours.
(5).How do I know the progress of my product?
Production department upload production schedule every day, you only need to consult the customer service staff.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASI2491238". Items marked "" are certified.
Company Profile
Shenyang YouDa Trading Import & Export Co., Ltd. Your Ideal Partner for Global Electrical Safety
Since 1990, Shenyang YouDa Trading Import & Export Co., Ltd. Has been committed to advancing innovation and safety in the global electrical industry. With over three decades of expertise, we are not only a trusted manufacturer of insulation materials but also a driving force in building a safer electrical future worldwide.
1. Insulation Materials - The Core of Electrical SafetyAs a comprehensive enterprise integrating R&D, manufacturing, and exports, Shenyang YouDa has established itself as a leader in insulation solutions.
Our extensive product portfolio includes:
Rigid laminated insulation boards, rods, and tubes
(Epoxy board, epoxy tube, epoxy rod, fiberglass board, fiberglass rod, fiberglass tube, phenolic cloth board, phenolic cloth rod, phenolic cloth tube, etc. )
Flexible insulation papers and composites
(AMA, DMD, AHA, NHN, polyester film, polyimide film, etc. )
High-performance mica products with outstanding heat resistance and dielectric strength
Every product is designed to provide reliable protection for transformers, motors, generators, and high-voltage equipment. With strict quality control and advanced processing capabilities, we ensure that every detail meets the highest standards of electrical safety.
2. Engineering Plastics - Strength and Reliability in Harsh EnvironmentsIn industries where durability is essential, Shenyang YouDa delivers advanced engineering plastics that withstand extreme operating conditions. Our products feature:
High-temperature resistance
Superior mechanical strength
Excellent corrosion protection
(PP Board, PC Board, PVC Boards, Acrylic , etc. )
These materials are widely applied in heavy machinery, mining, rail transportation, renewable energy, and even aerospace sectors - guaranteeing long-term stability and performance where reliability cannot be compromised.
3. Transformer Coolers - Precision and EfficiencyWith state-of-the-art automated welding technology and modern production lines, our transformer coolers offer outstanding efficiency and flexibility.
Key features include:
Annual production capacity exceeding 6, 000 tons
Fin widths of 520mm, 480mm, and 310mm
Customizable pitch distances from 500mm to 4000mm
These innovations ensure that we can provide tailored cooling solutions to meet the diverse needs of transformer manufacturers worldwide.
Global Reach, Shared SuccessShenyang YouDa's products and solutions are trusted across multiple industries - from power systems and renewable energy to automation, transportation, and aerospace. Guided by the principle of safety through innovation, we stand as a reliable partner for companies seeking world-class insulation and electrical protection solutions.
In today's interconnected world, we warmly welcome international partners to join us in forging a secure electrical future. With professional services, exceptional products, and a spirit of collaboration, Shenyang YouDa Trading Import & Export Co., Ltd. is ready to grow and prosper together with you.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Shenyang, Liaoning, China
-
Plant Area
- 150 square meters
-
Number of Employees
- 28
-
Registered Capital
- 1,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month -
Nearest Port
- Dalian Port
-
Minimum Order Quantity
- 1
-
Supply Chain Partners
- 20
Our Production Capability & Technical Expertise
-
Main Products
- Transformer Radiator, Insulation Paper, Insulation Sheet, Electrical Insulation Paper, Insulation Films, Fish Paper, DDP Paper
-
Production Lines
- 1
-
Production Machines
- Sculpture Machine, Cutting Machine
-
QA/QC inspectors
- 2 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instruction but no written records
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization
-
OEM Service Available
- Yes
-
R&D Engineers
- 5 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2019-12-16
-
Export Year
- 5 Years
-
Main Markets
- Africa, East Asia(Japan/ South Korea)
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 4
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- Can you give me a discount price?
- It is depending on the volume.
- Why is your price higher than other suppliers?
- We can offer the products of different quality levels depends on customer's target price and quality requirement.
- How can I get a sample?
- Non custom samples are free of charge. You only pay for the goods. We promise to deliver the sample within 48 hours.
- How can you guarantee the quality of mass production is same with the sample sent to me before?
- Our process will base on the samples which is the same as yours.
- How do I know the progress of my product?
- Production department upload production schedule every day, you only need to consult the customer service staff.
- What is the warranty period for this insulation sheet?
- The product comes with a lifetime warranty coverage for mechanical defects, ensuring long-term reliability.
- Is OEM service available for this product?
- Yes, OEM service is available, and we support customization from samples, designs, and full customization.
- What are the main applications of GPO-3 insulation sheet?
- It is widely used in the low voltage electrical industry, including motors, switch cabinets, transformers, and electric machinery.
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