420kV Electrical Power Transformer Disk Insulators

1. Application
 The insulating articles are for insulation support or isolation, matching high voltage switchgears or medium voltage switchgears. Dimensions, technical parameters and service environments can be custom specified.

2. Main Features
1).With the best insulating ability
2).Possessing high electrical and mechanical strength
3).Having wide temperature withstanding and good sealing
4).Be supplied to many internal or oversea companies
5).Epoxy resin cast in totally vacuum process or using APG and molding DMC (SMC) process

3. Insulating Articles Categories
Our insulating articles are having the following categories:
  1) Insulators: Our insulators include post type and disk type, offering single phase and three phases. And for the disk insulators, we have many variants, Such as the ones with metal flange or without metal flange, open or close in the epoxy resin, open or close in the insert and so on.
  2) Insulating rods
  3) Insulating tubes
  4) Contact covers
  5) Bushings and other insulation articles
4. Performance requirements
  1) Rated voltage: up to 1000kV
  2) Material: epoxy resin or custom specified
  3) Power frequency withstand: As per the standard IEC60137:2003 or GB/T 4109-2008
  4) Rated lightning impulse, switching impulse and chopped lightning impulse withstand voltage: perform the standard IEC60137:2003 or GB/T 4109-2008
  5) Measurement of partial discharge: As per the standard IEC60137:2003 or GB/T 4109-2008
 6) Mechanical strength: As per the standard IEC60137:2003 or GB/T 4109-2008 or custom specified
 7) Sealed performance:
     Be able to support the rated pressure of SF6
     Gas leakage: not exceed 0.1% annually

5.Description and advantages of the insulator
5.1 Insulation material: Epoxy resin
5.2 110-170kV, 3 phase
High insulation level
Partial discharge: ≤3pC
High strength for pressure and torsion
Excellent in leakage
5.3 ISO 9001:2008 and IEC 60137Ed.6.0
5.4 Payment: L/C or T/T
6 Technical data for those insulators:
6.1 Insulation level: 126/230/550kV (126kV)
145/275/650kV (145kV)
170/325/750kV (170kV)
10.2 Rated voltage: 110-170kV,
7 Explaination:
7.1 We can specially supply fittings needed according to the requirements of customers.
7.2 Our insulator products are high quality with favourable price,meet the customers'requires.We are producing them in accordance with IEC standards.Surely,we also can do insulator according to our customers's drawings.if you are interested in our products,please don't hesitate to contact us.
Notes: Detailed models and drawings for insulators would be provided under request.

Dimensions of Insulating Dish

  420kV Electrical Power Transformer Disk Insulators