QS11404 QS11405 IEC Pin Post Insulator 22kV 12.5kN
Pin Type Insulators
Product Overview
A 22 kV pin post porcelain insulator supplied in two catalogue numbers, QS11404 and QS11405, both rated 12.5 kN cantilever. The QS11404 gives 520 mm creepage with 260 mm protected and a 260 mm dry arcing distance at 10 kg. The QS11405 gives 599 mm creepage with 200 mm protected and a 240 mm dry arcing distance at 9.2 kg. Both share 90 kV dry and 65 kV wet power frequency withstand and 150 kV impulse withstand.
Key benefits
Why Buyers Choose This Part
- Two creepage options at the same 12.5 kN cantilever rating
- 150 kV impulse withstand on both catalogue numbers
- Protected creepage published separately so the choice is informed
- RIV held to 100 µV at 1000 kHz tested at 22 kV to ground
Application scenarios
Where It Is Used
- 22 kV distribution lines on pin post construction
- Sites where total creepage and protected creepage trade off differently
- Compact line designs needing rigid conductor support
- Projects specified against the QS catalogue numbers
Who it is for
Who It Suits
- Line engineers choosing between creepage profiles at 22 kV
- Contractors building 22 kV pin post lines
- Distributors supplying QS series pin post insulators
Problems it solves
What Goes Wrong Without The Right Part
- Choosing insulation by total creepage alone when the shed profile matters
- Weight limits on structures that a 10 kg unit would exceed
- Radio interference constraints near communication installations
- Mixed catalogue numbers within one line project
Technical features
How It Is Built
- QS11404: 520 mm creepage, 260 mm protected creepage, 260 mm dry arcing distance, 10 kg
- QS11405: 599 mm creepage, 200 mm protected creepage, 240 mm dry arcing distance, 9.2 kg
- 12.5 kN cantilever strength on both
- 90 kV dry power frequency withstand voltage
- 65 kV wet power frequency withstand voltage
- 150 kV impulse withstand voltage
- 22 kV test voltage to ground
- Maximum RIV 100 µV at 1000 kHz
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.
| Cantilever Strength On Both | 12.5 kN |
|---|---|
| Dry Power Frequency Withstand Voltage | 90 kV |
| Wet Power Frequency Withstand Voltage | 65 kV |
| Impulse Withstand Voltage | 150 kV |
Materials
Materials
- Electrical porcelain body
- Galvanised metal base fitting
Manufacturing
Process
- Forming
- Glazing
- Firing
- Base fitting assembly
- Cantilever and RIV testing
Quality control
Testing
- Cantilever proof test at 12.5 kN
- Impulse withstand verification at 150 kV
- RIV measurement at 22 kV to ground
Certifications
Certification
- ISO 9001 quality management system
Customisation
Customisation Options
- Choice of QS11404 or QS11405 profile
- Base fitting matched to your bracket
- Produced to drawing or sample
Comparison
How It Compares
| QS11404 against QS11405 | The 11405 has 79 mm more total creepage but 60 mm less protected creepage, and is 0.8 kg lighter. Where rain washing is unreliable, the higher protected figure of the 11404 is usually the safer choice. |
|---|---|
| ZS-600 pin post | The ZS-600 gives 600 mm creepage at 24 kV and 13 kN. Comparable duty on a different catalogue, so match to whichever your specification quotes. |
Use guide
Before You Order And After It Arrives
- Compare protected creepage, not just total creepage, when choosing between the two
- Keep cantilever load within 12.5 kN on both versions
- Note the weight difference when planning structure loading
- Confirm the catalogue number on the order to avoid a mixed delivery
Questions
QS11404 QS11405 IEC Pin Post Insulator 22kV 12.5kN Questions
What is the difference between QS11404 and QS11405?
QS11404 has 520 mm total creepage with 260 mm protected and weighs 10 kg. QS11405 has 599 mm total creepage with 200 mm protected and weighs 9.2 kg. Both are 12.5 kN cantilever.
Which one should I choose?
If the site relies on rain to wash the surface, the higher protected creepage of the QS11404 is usually the safer choice. If total creepage governs the specification, the QS11405 is longer.
What is the impulse withstand voltage?
150 kV on both catalogue numbers.
What are the power frequency withstand figures?
90 kV dry and 65 kV wet.
What is the cantilever strength?
12.5 kN.
What is the radio influence voltage?
A maximum of 100 µV at 1000 kHz, tested at 22 kV to ground.
Related
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Quote For QS11404 QS11405 IEC Pin Post Insulator 22kV 12.5kN
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