C4-80 II 10kV Porcelain Post Insulator GOST
Post Insulators
Product Overview
A GOST-pattern solid-core post insulator for 10 kV switchgear, used to support the live parts of disconnectors and circuit breakers inside distribution assemblies. Test voltage is 80 kV against a 10 kV rating, minimum breaking force is 4 kN, and a unit weighs 2.75 kg. The ceramic body is group 120 electrotechnical porcelain to GOST 20419-83, with AK12 aluminium alloy or nodular iron fittings.
- GOST
Key benefits
Why Buyers Choose This Part
- Built to the GOST material specifications Russian and CIS buyers ask for by clause
- 80 kV test voltage against a 10 kV rating leaves clear dielectric margin
- 4 kN cantilever strength with 100 N.m torsion strength for switch operating loads
- Silicone sealant on the cement joints keeps water out of the armature seam
Application scenarios
Where It Is Used
- 10 kV disconnectors and circuit breakers in distribution switchgear
- Indoor switchgear assemblies built to GOST and UKhL1 climatic classes
- Replacement of aged C4-80 II units during switchgear refurbishment
- Switchgear manufacturers exporting to CIS markets
Who it is for
Who It Suits
- Switchgear manufacturers building to GOST specifications
- Utilities in Russia and CIS countries maintaining 10 kV assemblies
- Distributors supplying GOST-pattern electrical porcelain
Problems it solves
What Goes Wrong Without The Right Part
- Finding a supplier that will hold the GOST material clauses, not just the dimensions
- Post insulators that loosen at the cement joint after a few switching seasons
- Torsion failures when the insulator is used as the operating shaft support
- Long procurement lead times on discontinued GOST part numbers
Technical features
How It Is Built
- Rated 10 kV with 80 kV test voltage
- Minimum mechanical breaking force 4 kN
- 300 mm creepage distance
- 100 N.m torsion strength
- UKhL1 climatic execution
- 2.75 kg unit weight
Specifications
Published Figures For This Product
Every value below comes from the manufacturer data for this item. Figures not listed are confirmed against the drawing before an order is placed.
| Minimum Mechanical Breaking Force | 4 kN |
|---|---|
| Creepage Distance | 300 mm |
| Torsion Strength | 100 N.m |
| Unit Weight | 2.75 kg |
| Cantilever Strength | 4 kN |
| Rated Voltage | 10 kV |
| Test Voltage | 80 kV |
Materials
Materials
- Group 120 electrotechnical ceramic to GOST 20419-83
- AK12 aluminium alloy fittings to GOST 1583-93, or nodular iron
- PTs-500 DON Portland cement bonding to GOST 10178-85
- Silicone sealant on the cement joint
Manufacturing
Process
- Body extrusion and turning
- Glazing
- Firing
- Cement bonding of fittings
- Joint sealing
- Electrical test
Quality control
Testing
- Cantilever load proof test to the 4 kN figure
- 80 kV test voltage applied on routine test
- Cement joint and sealant inspection before despatch
Certifications
Certification
- Material specifications to GOST 20419-83, GOST 1583-93 and GOST 10178-85
- ISO 9001 quality management system
Customisation
Customisation Options
- Aluminium alloy or nodular iron fittings as your specification requires
- Produced to customer drawings and samples
- Marking to your part numbering
Comparison
How It Compares
| IEC pattern post insulator | Same job, different dimensional and material standard. Specify the C4-80 II when the switchgear drawing calls out GOST clauses. |
|---|---|
| Cast resin post insulator | Porcelain keeps its surface in UV and does not creep under sustained cantilever load, which matters where the insulator carries an operating shaft. |
Use guide
Before You Order And After It Arrives
- Confirm the fitting material, aluminium alloy or nodular iron, before ordering
- Do not exceed 4 kN cantilever or 100 N.m torsion in service
- Keep the cement joints dry in storage so the sealant is not disturbed
- Check the glaze for chips before fitting, a chipped shed shortens the creepage
Questions
C4-80 II 10kV Porcelain Post Insulator GOST Questions
Which GOST standards does this insulator follow?
The ceramic is group 120 electrotechnical material to GOST 20419-83, the fittings are AK12 aluminium alloy to GOST 1583-93, and the bonding cement is PTs-500 DON to GOST 10178-85.
What is the test voltage?
80 kV, against a 10 kV rated voltage.
How much cantilever load will it take?
Minimum breaking force is 4 kN, with 100 N.m torsion strength.
Can I have nodular iron fittings instead of aluminium?
Yes. Both are available, tell us which the drawing specifies.
What is the creepage distance?
300 mm.
Do you accept our own part marking?
Yes, OEM and ODM marking is accepted.
Related
Related Products
IO-10/4 UKhL3 Ceramic Post Insulator For Line Supports
- Diameter Body 54 mm
- Height 272 mm
- Minimum Puncture Voltage 75 kV
IPU-10/630-7.5 I UKhL1 Wall Bushing With Oval Flange
- Rated Current 630 A
- Minimum Mechanical Bending Failure Load 7.5 kN
- Rated Voltage 10 kV
J8-125 Post Ceramic Insulator 8kN Bending Strength
- BIL 125 kV
- Bending Strength 8 kN
- Maximum Shed And Outer Diameter 110 mm
IO-10/4 UKhL3 and IOR-10/3.75 II UKhL2 Post Insulator
- Body Diameter 54 mm
- Overall Height 272 mm
- Minimum Puncture Voltage 75 kV
Quote For C4-80 II 10kV Porcelain Post Insulator GOST
Send the quantity and any drawing you have. Enquiries are answered within 24 hours, and we produce to customer drawings and samples.