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QUALITY
Quality & Testing
Design, type, sample and routine tests to IEC and TEDAŞ requirements.
ENGINEERING APPROACH
From specification to site, every product with the same discipline
01
The tested design is the delivered design
Type tests are performed on samples identical to the product to be shipped, in TS EN ISO/IEC 17025 accredited laboratories. No difference in block count, length or creepage is allowed between sample and product.
02
Forged steel end fittings
VHD-35 end fittings are forged, not cast, steel as required by TEDAŞ-MLZ/2017-067. All metal parts are hot-dip galvanised.
03
HTV silicone and ECR rod
High-temperature vulcanised silicone housing is hydrophobic and resists UV and ozone. Boron-free ECR glass-fibre rod resists brittle fracture.
04
Specification compliance file
Every quotation comes with a clause-by-clause compliance table against the TEDAŞ or TEİAŞ specification, a guaranteed technical particulars list and a type-test matrix.
QUALITY & TESTING
Designed to standards, verified in accredited laboratories
Insulators and arresters are verified through a four-stage test programme. Type tests are performed on samples identical to the delivered design in TS EN ISO/IEC 17025 accredited laboratories.
01
Design tests
Interfaces, silicone housing and rod material are verified per IEC 62217, including the 1000-hour salt-fog tracking and erosion test.
02
Type tests
Lightning impulse and power-frequency withstand and mechanical load tests; residual voltage, charge transfer and short-circuit tests for arresters.
03
Sample tests
Dimensional checks, galvanising thickness and mechanical rating verification on samples from every shipment lot.
04
Routine tests
On every unit: mechanical routine test for insulators; reference voltage, residual voltage and partial discharge measurement for arresters.
| Standard / specification | Scope |
|---|---|
| IEC 61109 | Composite suspension and tension insulators |
| IEC 61952 | Composite line post insulators |
| IEC 62217 | Polymeric insulators: general definitions and tests |
| IEC 60099-4 | Gapless metal-oxide surge arresters |
| IEC 60815-3 | Selection of polymeric insulators for polluted conditions |
| IEC 60120 | Ball and socket coupling dimensions |
| ISO 1461 | Hot-dip galvanised coatings |
| TEDAŞ-MLZ/2017-067 | TEDAŞ post insulator specification |
| TEDAŞ-MLZ/96-019.B | TEDAŞ surge arrester specification |
IEC standards are applied together with their TS EN equivalents.
TEST PROGRAMME
Four-stage verification from design to shipment
| Stage | Standard | Scope |
|---|---|---|
| Design tests | IEC 62217 | Interface and connection tests, 1000 h salt fog (tracking and erosion), flammability, rod water diffusion and dye penetration |
| Type tests | IEC 61109 · IEC 61952 | Dry lightning impulse and wet power-frequency withstand tests; damage limit and interface sealing verification |
| Sample tests | IEC 61109 · IEC 61952 · ISO 1461 | Dimensional check, locking system check, galvanising thickness, SML or SCL verification |
| Routine tests | IEC 61109 · IEC 61952 | Mechanical routine test and visual inspection on every unit |
Type tests are performed on samples identical to the delivered design in TS EN ISO/IEC 17025 accredited laboratories.
QUOTE
Get a quote for your requirement
Write to us with the tender number, quantity and delivery location; we will reply with a compliance table and price offer.