Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Technical Parameters：
Product Name: Silicone Surge Arrester, is also named Polymer Surge Arrester, Oxide Zinc Surge Arrester, Composite Lightning Arrester.
Rated voltage: 11kv
Norminal discharge current: 5kA
Maximum continuous operating voltage (MCOV): 9.40kv
1/4µs steep current residual voltage: 40kv
8/20µs lightning current residual voltage : 33kv
30/60µs switching current residual voltage: 30kv
2000µs rectangular wave current impulse: 150A
4/10µs high current withstand discharge capacity : 65KA
Discharge classic: 1
Creepage distance: 360mm
Detailed Production Process Flow:
The manufacturing of this arrester involves precision engineering and strict quality control. Below is the step-by-step production workflow:
1. Raw Material Preparation
ZnO Valve Blocks:
High-purity ZnO powder (99.5%+) mixed with additives (Bi₂O₃, Sb₂O₃, Co₂O₃, MnO₂) for non-linear characteristics.
Powder pressed into discs under 100–150 MPa pressure.
Sintered at 1,100–1,250°C in controlled-atmosphere furnaces to form dense, homogeneous blocks.
Polymer Housing:
Silicone Rubber (HTV) or EPDM pellets compounded with:
Alumina Trihydrate (ATH, 40–60% for arc resistance).
UV stabilizers, pigments (grey colorant), and hydrophobic agents.
2. Valve Block Electrical Grading
Each sintered ZnO disc tested for **non-linear coefficient (α) and threshold voltage (V₁mA/mm).
Discs grouped by electrical properties to ensure uniform voltage distribution.
Stacked into columns, separated by conductive coatings (Al-Zn spray), and bonded with epoxy.
3. Housing Molding (6-Shed Design)
Injection Molding Process:
Polymer compound injected into precision molds designed for 6 optimized sheds (enhanced rain washing/pollution resistance).
Molds engineered to achieve 360mm creepage distance via:
- Increased shed spacing and depth.
- Extended leakage path along housing profile.
Curing:
- Vulcanized at 160–180°C under pressure (20–30 MPa) for 10–15 minutes.
- Post-curing at 200°C for 4–6 hours to maximize hydrophobicity.
4. Metal End-Fitting Fabrication
Aluminum/stainless steel terminals machined with:
- Threaded bolts for line connection.
- Compression grooves for housing sealing.
Surface passivated (anodized/Zn-plated) for corrosion resistance.
5. Assembly & Sealing
Core-Housing Integration:
- ZnO column inserted into the polymer housing.
- End-fittings crimped/sealed onto both ends via cold-welding or compression molding.
Hermetic Sealing:
- Silicone sealant injected at terminals to prevent moisture ingress (IP67 rating).
- Critical for long-term stability in humid environments.
6. Electrical Testing & Quality Control
Routine Tests (Per IEC 60099-4):
- DC Reference Voltage (Vref): Measures V at 1mA DC (verifies non-linearity).
- Leakage Current Test:≤50 μA at 0.75 × Vref.
- Impulse Current Test: 5kA (8/20 μs) applied 2x – checks energy handling.
- Power Frequency Withstand: 30kV/10s (no flashover).
Special Tests (Sample Basis):
- Pollution Test:Validates 360mm creepage under salt-fog (IEC 60507).
- Accelerated Aging: 1,000 hrs at 115°C to simulate 20-year service.
7. Final Inspection & Packaging
Visual inspection for defects (cracks, air bubbles).
Laser marking: Ratings (11kV, 5kA), manufacturer, date.
Packaged in shock-resistant boxes with desiccant.
Key Technical Advantages
6-Shed Design: Maximizes pollution performance (suitable for IEC Class IV/Heavy Pollution).
Extended Creepage (360mm):Prevents flashover in coastal/industrial areas.
Robust Construction: Sealed polymer housing resists UV, tracking, and thermal cycling (-40°C to +85°C).
Eco-Friendly: No gas/SF6, maintenance-free.
Company Tour:
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 |  |  |
Technical Parameters：
Product Name: Silicone Surge Arrester, is also named Polymer Surge Arrester, Oxide Zinc Surge Arrester, Composite Lightning Arrester.
Rated voltage: 11kv
Norminal discharge current: 5kA
Maximum continuous operating voltage (MCOV): 9.40kv
1/4µs steep current residual voltage: 40kv
8/20µs lightning current residual voltage : 33kv
30/60µs switching current residual voltage: 30kv
2000µs rectangular wave current impulse: 150A
4/10µs high current withstand discharge capacity : 65KA
Discharge classic: 1
Creepage distance: 360mm
Detailed Production Process Flow:
The manufacturing of this arrester involves precision engineering and strict quality control. Below is the step-by-step production workflow:
1. Raw Material Preparation
ZnO Valve Blocks:
High-purity ZnO powder (99.5%+) mixed with additives (Bi₂O₃, Sb₂O₃, Co₂O₃, MnO₂) for non-linear characteristics.
Powder pressed into discs under 100–150 MPa pressure.
Sintered at 1,100–1,250°C in controlled-atmosphere furnaces to form dense, homogeneous blocks.
Polymer Housing:
Silicone Rubber (HTV) or EPDM pellets compounded with:
Alumina Trihydrate (ATH, 40–60% for arc resistance).
UV stabilizers, pigments (grey colorant), and hydrophobic agents.
2. Valve Block Electrical Grading
Each sintered ZnO disc tested for **non-linear coefficient (α) and threshold voltage (V₁mA/mm).
Discs grouped by electrical properties to ensure uniform voltage distribution.
Stacked into columns, separated by conductive coatings (Al-Zn spray), and bonded with epoxy.
3. Housing Molding (6-Shed Design)
Injection Molding Process:
Polymer compound injected into precision molds designed for 6 optimized sheds (enhanced rain washing/pollution resistance).
Molds engineered to achieve 360mm creepage distance via:
- Increased shed spacing and depth.
- Extended leakage path along housing profile.
Curing:
- Vulcanized at 160–180°C under pressure (20–30 MPa) for 10–15 minutes.
- Post-curing at 200°C for 4–6 hours to maximize hydrophobicity.
4. Metal End-Fitting Fabrication
Aluminum/stainless steel terminals machined with:
- Threaded bolts for line connection.
- Compression grooves for housing sealing.
Surface passivated (anodized/Zn-plated) for corrosion resistance.
5. Assembly & Sealing
Core-Housing Integration:
- ZnO column inserted into the polymer housing.
- End-fittings crimped/sealed onto both ends via cold-welding or compression molding.
Hermetic Sealing:
- Silicone sealant injected at terminals to prevent moisture ingress (IP67 rating).
- Critical for long-term stability in humid environments.
6. Electrical Testing & Quality Control
Routine Tests (Per IEC 60099-4):
- DC Reference Voltage (Vref): Measures V at 1mA DC (verifies non-linearity).
- Leakage Current Test:≤50 μA at 0.75 × Vref.
- Impulse Current Test: 5kA (8/20 μs) applied 2x – checks energy handling.
- Power Frequency Withstand: 30kV/10s (no flashover).
Special Tests (Sample Basis):
- Pollution Test:Validates 360mm creepage under salt-fog (IEC 60507).
- Accelerated Aging: 1,000 hrs at 115°C to simulate 20-year service.
7. Final Inspection & Packaging
Visual inspection for defects (cracks, air bubbles).
Laser marking: Ratings (11kV, 5kA), manufacturer, date.
Packaged in shock-resistant boxes with desiccant.
Key Technical Advantages
6-Shed Design: Maximizes pollution performance (suitable for IEC Class IV/Heavy Pollution).
Extended Creepage (360mm):Prevents flashover in coastal/industrial areas.
Robust Construction: Sealed polymer housing resists UV, tracking, and thermal cycling (-40°C to +85°C).
Eco-Friendly: No gas/SF6, maintenance-free.
Company Tour:
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