Specialized Surge Protection Solutions (SPD)
SPECIALIZED SURGE PROTECTION SOLUTIONS FOR HEAVY INDUSTRY
Maximum Protection – Continuous Operation – Absolute Safety
1. Why do Oil & Gas and Power systems need specialized solutions?
In heavy industrial environments, surges not only damage equipment but also trigger fire hazards and production downtime. Standard SPDs fail to meet these rigorous requirements due to:
Harsh Environments: High humidity, extreme temperatures, and corrosive chemicals.
Signal Sensitivity: DCS and PLC systems require clean, unattenuated signals to ensure measurement accuracy.
Explosion Safety: Devices must meet ATEX/IECEx international standards to operate in hazardous areas.
2. Superior Technical Features (Premium Industrial Grade)
We provide solutions based on world-leading technology, featuring "Golden" parameters that standard SPDs lack:
Hybrid Technology (GDT + TVS): A perfect combination of Gas Discharge Tubes (GDT) for high current discharge and Suppression Diodes (TVS) for precise voltage clamping. This ensures ultra-fast response times (under 1 nanosec) and minimal residual voltage.
Hot-Swappable Design: Plug-and-base construction allows module replacement in seconds without power interruption or disconnecting wires, ensuring 24/7 control system uptime.
Ultra-Slim Space Optimization: At only 6mm wide, these devices allow high-density installation, saving up to 50% cabinet space compared to traditional SPDs.
"Invisible" Signal Protection: Ultra-low series resistance (under 2.2 Ohm) and high bandwidth (above 50 MHz) ensure that protocols like Modbus, Profibus, Foundation Fieldbus, and HART operate smoothly without errors.
3. Technical Comparison: Premium SPD vs. Standard SPD
Technical Standard | Premium Industrial SPD | Standard / Residential SPD |
|---|---|---|
Protection Technology | Multi-stage Hybrid (GDT + TVS) | Single-stage (MOV only) |
Series Resistance | Ultra-low (2.2 Ohm), no signal distortion | High, causes signal voltage drops |
Maintenance | Hot-swappable modules | Requires wiring removal & shutdown |
Safety Certification | ATEX, IECEx (Explosion proof) | None |
Data Bandwidth | Very high (above 50 MHz) | Low, causes data packet loss |
Dimensions | Ultra-slim (6mm - 7mm) | Wide (12mm - 18mm) |
4. Solutions for Critical Areas
Power Supply Protection (AC/DC): Utilizes intelligent thermal disconnection technology to safely isolate the SPD during overload, preventing fire hazards within the electrical cabinet.
Control System Protection (DCS/PLC/SIS): Specialized modules for 4-20mA loops, protecting expensive I/O cards from surges coming from the field.
Hazardous Area Protection: Ex ia certified SPDs for safe installation at oil tank farms, gas loading stations, and other high-risk explosive environments.
5. Our Turnkey Execution Process
Survey & Risk Assessment: Analyze lightning density and system structure according to IEC 62305.
Solution Design: Select equipment compatible with signal characteristics and plant voltage levels.
Installation & Testing: Implementation of low-resistance grounding (under 1 Ohm) and professional SPD installation.
Periodic Maintenance: Annual "Health check" for surge modules and grounding system re-measurement.
VIET THANG LOI TECHNOLOGY COMPANY LIMITED
19A Cong Hoa, Bay Hien Ward, Ho Chi Minh City
Tel: 028 - 3811 0510 / 11 | Fax: 028 - 3811 0512 | Email: Info@vtltech.com.vn