Cast Resin 550kV Electrical Ceramic Insulators for Spark Plug

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US $231-875 / Pieces | 3 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
Disck Insulator
Epoxy Resin
High Voltage
Rated Voltage:
Tensile Strength:
As per IEC
Round shape or other shapes as the clients' requirements
White or other colors as the clients' requirements
IEC 60137Ed.6.0
ISO 9001:2008
Place used:
Indoor or outdoor
single phase or 3-phase
as per client's requirement
with many variants
routine test
Supply Ability
Supply Ability:
5000 Unit/Units per Month
Packaging & Delivery
Packaging Details
each insulator shall be wraped by a thick plastic paper, then put in a small box. It contain a separator between one insulator and another.
Each group of above insulators shall be put in a large box on a wooden pallet.
Guangzhou , Shenzhen

  Cast Resin 550kV Electrical Ceramic Insulators for Spark Plug 

Product Description 

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. Manufacturing Standard: IEC60137:2003, GB/T 4109-2008  

6. Technical data for those insulators:

 Description and advantages of the insulators.
6.1 Insulation material: Epoxy resin
6.2 550kV, 3 phase
High insulation level
Partial discharge: ≤3pC
High strength for pressure and torsion
Excellent in leakage
6.3 ISO 9001:2008 and IEC 60137Ed.6.0
7 Rated voltage: 550kV,  

Packaging & Shipping

All our goods are packed in wooden cases, with foam inside for protection. And we have a team who is in charge of packing. The team consists of our skilful carpenters and experienced packing designers. These enable our packing reasonable, safe and reliable. 


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Our Partners

Our Business  Partners.jpg 

Our Services 

I. Before Sale

a. Contact with clients nearly to know their requirements exactly.

b. Express the requirements from the clients to relevant departments in quickness and exactitude. 

II. During Sale

a. Ensure that the products delivered are certified (confirming to the standards of China and IEC).

b. Ensure that marks, handle, package, storage and protection are in accordance with the requirements of ISO 9001/ISO 14001 standards.

c.Transport the products to specified destination as per the contract. 

III. After Sale

Our after- sales service is available anytime.

a. Three guarantees will be carried out on the products delivered (18 months quality guarantee). That is refund, replacement and repair.

b. Fittings supply shall be in time.

c. Response for the financial loss brought from the uncertified or services.

d. Product sample is available.

e. Product customization is welcome. We have professional team to meet your requirements. 

Company Information 

(GDSH)Guangdong Shui Instrument Transformer Works Co., Ltd. has been in the field of designing and manufacturing power transformers, instrument transformers and related components for more than 24 years. GDSH has two factories based in Sihui City near Guangzhou. Sihu Brand products have the full certificates as below:

·Russia GOST certification;

·China Environmental Symbol Products;

·Guangdong Provincial Energy Saving Symbol Products;

·Excellent conduct enterprise certification with AAAA-level standard; and

·Standardized safety production enterprise with second level

And GDSH pass ISO 9001:2000, ISO 9001/ISO 14001/OHSAS 18001 Quality Environmental and Occupational Health and Safety Management Systems certification. 

Our production capability is:

Power transformers 20,000 pieces per year

Voltage transformers 80,000 pieces per year

Current transformers 100,000 pieces per year

Insulating articles 400,000 pieces per year 

Quality control

We have more than 50 professional quality inspectors. There are at least 2 quality inspectors distributed at each workshop to make sure every parts of our product are qualified. What’s more, our Test workshop is always capable of stopping non-conforming products to be delivered. 

There are 30-45 members in our R&D team

We have a policy of continuous improvement to its product lines.

 And our substantial R & D capabilities are focused on quality and functional enhancements.

Our R&D team provides innovative products to the power grid and other electrical industries. 

Our main export market is South Asia, North America, Europe and South America and so on. 


Payment terms: L/C or T/T

Minimum order:

             For high voltage products and power transformers: 1 piece;

             For medium voltage products: 3 pieces;

             For low voltage products and insulating articles: 10 pieces

Delivery time: 5~30 days after receive of order

Quotation Valid Date: 90 days

Transportation methods: By air or by sea, as requested. 

Factory Overview