Our products: Epoxy glass fiber reinforced entwined tube with complete specification is developed for
110kV~1,000kV composite hollow insulators, reactors, arresters, fuses, mutual inductors, on load tap changers,
transformers and other high-voltage electrical equipment structures, with performance parameters reaching IEC
standards, and nationally advanced level.
Technical specification:
It is entwined by uninterrupted fiber wet method; twining angle, ±50~55 (we can adjust twining angle to reach
your mechanical performance requirement); fiber content (weight ratio), 70~75%; density, 2.00 g/cm3; water
absorption, 0.01 %; axial thermal expansion coefficient, 1.8 E-05 1/K; glass transition temperature, 110~120 ºC;
chemical resisting mineral oil: excellent; solvent and dilute acid: good; tensile elastic modulus, axially 14,000
MPa; tensile strength: axially 280 MPa; tensile strength: annularly 600 MPa; compressive strength: axially 240
MPa; bending strength: axially 350 MPa; shearing strength: 150 MPa; relative dielectric constant: 2-3.2;
dielectric dissipation factor: 0.003-0.015; partial discharge capacity≤5; insulation strength: axially 3~6 kV/mm;
insulation strength: radially 10~12 kV/mm; lightning impact: 110 KVP; power frequency impact: 50 KV; thermal
rating: B, F and H; internal diameter>6mm ; external diameter<500mm; length<1,500mm. The above data is only
for reference, our sleeve parameters are customized according to customer demands.

Our Services
1. | Pre sale service |
a. | make technical solution |
b. | send quotation, technical data sheet and drawing |
c. | prepare power transmission plan, testing plan,and shipment plan |
2. | In sale service |
a. | supervise the manufacturing schedule totally in accordance with the plan |
b. | send photos to customer during every manufacturing process(hold point) |
c. | inform the customer one week before testinng. |
3. | After sale service |
a. | installation and commissioning, training the workers |
b. | quick response within 12 hours any time |
c. | provide 12 months gurantee period normally. |
FAQ
1. Q: | What is your delivery time ? |
A: | Depend on the type of transformer. |
2. Q: | What is your payment term? |
A: | 30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
3. Q: | What kind of starndard you follow? |
A: | IEC, ANSI, CSA, GB, etc |
4. Q: | What kind of supporting documentation you can provide normally |
A: | Quotation,outline drawing,manufacturing plan, quality control plan testing plan, financial report, type test report(KEMA, CESI),reference list,etc |
5. Q: | What is your normal wanrranty period? |
A: | 12 months after transformer operation. |
6. Q: | Can u do installation and commissioningin user's site? |
A: | Yes, we can send our installation team to user's country for service. |
7. Q: | Do you have any experience in this kind of transformer? |
A: | Yes, we can provide reference list for check. |
Our advantages:
Quality Assurance
--From the very beginning, VILLE ensures quality in every step to achieve the best quality.
Experience Sharing
--With more than 30 years' experience in power industry, VILLE brings you an optimized solution.
Global Service
--Wherever you are, VILLE global network will support and provide you with value.
Quick Response
--In response to your needs without delay, VILLE knows the value of your time.
Thanks for choosing VILLE as your reliable partner and
please trust both of us will create a brilliant future!