You are here: Home » Products » Others » Polymer-Housed Gapless Surge Arrester

Polymer-Housed Gapless Surge Arrester

This series of surge arresters utilizes ZnO (zinc oxide) nonlinear resistive discs and a fully sealed polymer housing design, specifically engineered to provide lightning and switching overvoltage protection for 3kV-36kV medium-voltage power systems. Compliant with IEC 60099-4 and IEEE C62.11 standards, these gapless arresters feature ultra-fast response (≤25 ns) and high energy absorption (nominal discharge current: 10 kA), effectively safeguarding transformers, switchgear, and other critical equipment against lightning strikes and switching surges. Suitable for both AC/DC systems with IP67 protection, they are ideal for substations, overhead lines, and industrial power distribution applications, offering a design lifespan of ≥25 years.

Quantity:
Availability:





Inquire Add to Basket

Gapless ZnO Surge Arrester Medium Voltage Polymer Arrester High Energy Absorption Lightning Protector IEC 60099-4 Certified Surge Arresters Surge Arrester for Renewable Energy Systems Explosion-Proof Surge Arrester

Product Advantages

Technical Parameters

Applications

FAQ

1. Superior Energy Absorption

- Maximum discharge current: 100 kA (8/20 μs waveform); long-duration withstand: 250 A (2 ms square wave).

- 50% higher energy tolerance compared to traditional SiC arresters.

2. Gapless Safety Design

- Fully sealed polymer housing eliminates external gaps, preventing leakage risks.

- Leakage current <1 mA under rated voltage, reducing maintenance costs.

3. Environmental Resilience

- UV-resistant and salt-mist-proof polymer housing.

- Operating temperature range: -40°C to +80°C; creepage distance ≥31 mm/kV.

- Compatible with high humidity (≤95% RH) and polluted environments.

4. Pressure Relief Protection

- Internal pressure relief channels safely discharge 20 kA fault currents to prevent explosions.

- Certified for 16 kA/20 kA pressure release tests.

Parameter

Value

Rated Voltage (Ur)

3 kV – 36 kV

Nominal Discharge Current (In)

5 kA

10 kA

Maximum Discharge Current (Imax)

65 kA

100 kA

Long-Duration Current

150 A

250 A (2 ms square wave)

Pressure Relief Capacity

16 kA

20 kA

Creepage Distance

≥31 mm/kV

Housing Material

Silicone rubber composite polymer

Protection Rating

IP67

Certifications

IEC 60099-4

IEEE C62.11

- Substation Protection: Parallel installation on transformer line terminals to suppress lightning surges and protect winding insulation.

- Renewable Energy Systems: Safeguards PV inverters and wind turbine converters against lightning overvoltage.

- Industrial Switchgear: Integrated into busbars to absorb switching surges from circuit breaker operations.

- Railway Traction Power: Compatible with 27.5 kV catenary systems, durable under frequent pulse currents (e.g., locomotive start/stop).

Q1: Advantages over SiC arresters?

A: Higher nonlinearity, faster response, and no series gaps, eliminating periodic gap adjustments.

Q2: How to select Ur?

A: Ur must be ≥1.25× system maximum operating voltage (e.g., 12 kV or 15 kV for 10 kV systems).

Q3: Can it be installed horizontally?

A: Prohibited. Vertical mounting ensures pressure relief channel functionality and arc dissipation.

Q4: Maintenance interval?

A: Inspect leakage current (<1 mA) and counter every 2 years; clean surfaces annually in polluted areas.

Q5: Suitable for DC systems?

A: Yes. Select DC-rated models (marked "DC") with polarity withstand ≥1.5× system voltage.

Related Products

Split Core Current Transformer

High Voltage Shunt Capacitor

Electric Knife Switch

Thermal Overload Relay

Molded Case Circuit Breaker

Isolating Switch

Drop-out Fuse

LY-ACB Air Circuit Breaker

Polymer-Housed Gapless Surge Arrester

Related Products

CONTACT US

QUICK LINKS

PRODUCTS CATEGORY

SIGN UP FOR OUR NEWSLETTER