# Whalesens WSE-S EV Charging Air Filter | Ultra-Thin, Custom & Washable

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> Last updated: 2026-09-20 16:13:23

The Whalesens WSE‑S series is a G4‑grade high‑efficiency protective filter engineered for new energy vehicle charging piles. Constructed with washable open‑cell polyurethane foam (selectable pore sizes: 10–100 PPI) and an integrated moisture barrier, it efficiently captures particles ≥5 μm while delivering robust protection against dust, water splashing, and flame. 

Compliant with UL 94 HF‑1 flammability standards, its ultra‑thin 7 mm profile ensures easy integration into compact charging pile designs. We provide custom sizing and material options to help lower operating costs and extend the service life of charging infrastructure.

The Whalesens WSE-S ultra-thin air filter is a tailor-made ideal protection solution for electric vehicle charging piles, especially suitable for common dusty environments such as city centers and highway service areas.

## Key features

- **Grade**: 10 – 100 PPI (Custom density on request)
- **Washable & Reusable**: IP54+ (Rinse, dry, reinstall)
- **Filtration Grade**: G4 (High-efficiency coarse)
- **Profile**: Ultra Thin (Fits slim EV pile slots)

## Specifications

- Filter media: Polyurethane open-cell foam
- Colour: Black
- Activated carbon: Powdered activated carbon (wood, coal or coconut shell based)
- Carbon content: ≥50%
- Benzene adsorption: ≥20%
- Standard sheet sizes: 100×200 cm, 120×200 cm
- Standard thickness: 3 – 100 mm
- Pore size: HR-20 (35 ppi), HR-15 (30 ppi), HR-10 (20 ppi)
- Initial resistance: ≤35 Pa (10 mm medium-pore media at 1.0 m/s)
- Frame: Aluminum alloy / galvanized steel
- Flame rating: UL94 HF-1, or UL900 on project request
- Cleaning & maintenance: Washable or vacuum cleanable; recommended interval 3–6 months

## Applications

City Center Charging Hubs, Highway Service Areas,Underground Carparks,Commercial Fleets,High-Dust Outdoors Residential Stacks

## Core Advantages

The Whalesens WSE-S ultra-thin air filter is a tailor-made ideal protection solution for electric vehicle charging piles, especially suitable for common dusty environments such as city centers and highway service areas.

- Cost-Effective, Long-Term Savings: Featuring a unique washable design, when the filter becomes clogged, performance can be restored simply by cleaning it with a vacuum cleaner or rinsing it with clean water, allowing for repeated use. Compared to traditional disposable filters, this can significantly reduce the long-term operating and maintenance costs (OPEX) of charging stations.
- Dual-Layer Protection, Reliable Performance: Innovatively combines an open-cell foam layer with a high-efficiency moisture barrier layer. The open-cell foam effectively intercepts and retains larger dust particles, pollen, and insects from the air, while the moisture barrier resists rain splash and prevents moisture ingress, protecting the sensitive internal electronic components.
- Ultra-Thin Design, Strong Compatibility: Designed specifically for space-constrained charging piles, it features an integrally molded aluminum alloy frame with a thickness of just 7mm (0.28 inches, customizable dimensions). It can be easily installed without modifying existing equipment, making it a perfect choice for upgrading existing charging stations.
- Safe, Durable, Internationally Certified: Complies with the UL94 HF-1 flame retardancy standard, ensuring safe use under extreme conditions. Its robust construction resists water splash from all directions (effectively splash-proof), providing all-weather basic protection for outdoor charging piles.

## Filter Material (10-100PPI)


## Material Parameters


## Technical Highlights

- Filtration Precision: Effectively intercepts particles >5 microns. The double-sided diamond mesh design combined with the open-cell foam layer effectively captures larger particles.
- Flame Retardancy Rating: UL94 HF-1/UL 900
- Cleaning Method: Washable with water or cleanable with a vacuum cleaner; reusable.
- Application Scenarios: Urban charging stations, highway service areas, commercial parking lots, corporate campuses, etc.

## More Than a Product, It's a Solution


## FAQ

- {'q': 'How is EV charging station filtration different from standard industrial applications?', 'a': 'A: Charging piles need to balance heat dissipation efficiency with filtration accuracy, requiring stricter airflow resistance requirements.'}
- {'q': 'How do I choose between different product series?', 'a': 'A: Based on the deployment environment: Urban → WSE-S, Highway → WSE-M, Coastal → WSE-P.'}
- {'q': 'How does filter selection affect charging station cooling performance?', 'a': 'A: Low air resistance design ensures adequate cooling airflow, preventing overheating that could trigger power derating.'}
- {'q': 'Are Whalesens filters compatible with major charging pile brands?', 'a': 'A: Yes, we support customized dimensions and offer adapters compatible with mainstream models from ABB, Tesla, Star Charge, and others.'}
- {'q': 'What is the filter maintenance interval?', 'a': 'A: 6-12 months for standard environments, 3-6 months for harsh environments. Optional smart differential pressure monitoring is available.'}
- {'q': 'How much can the filter extend the life of a charging pile?', 'a': 'A: It can extend the life of core components by 30-50%, with a return on investment (ROI) exceeding 300%.'}