1. What is an Arc Protection System (APS)?
An Arc Protection System (APS) is a proactive safety solution designed to detect and extinguish arc faults in electrical panels, substations, and medium- and low-voltage switchgear. An arc fault is an unintended electrical discharge between conductive parts, generating extremely high temperatures (10,000 ~ 20,000°C), intense pressure, and bright light. This phenomenon can lead to fires, equipment damage, and severe threats to human safety.
Why is APS Necessary?
- Protect Human Safety: Minimizes the risk of severe burns and injuries caused by arc explosions.
- Protect Equipment and Assets: Reduces material damage and extends equipment lifespan.
- Reduce Downtime: Enhances system continuity and operational stability.
- Comply with International Safety Standards: IEC 61850, IEEE 1584, KOEMA 0930~0932.
2. LS ELECTRIC’s Arc Protection Solution
Introduction to APS of LS ELECTRIC
The LS Arc Protection System (APS) is an advanced solution for medium- and low-voltage panels, capable of detecting arc faults and extinguishing them within 5 milliseconds, ensuring maximum safety for both operators and equipment.
Key Features & Benefits
| Feature | Benefit |
| Fast arc removal time | Eliminates incidents within 5ms (using Arc Eliminator). |
| APS 1 set can protect up to 25 switchgears | Flexible solution for large systems. |
| User-friendly design, easy retrofit upgrades | Easily integrated into existing systems. |
| Certified by KERI – KOEMA 0930/0931/0932 | Meets international quality and safety standards. |
3. LS ELECTRIC APS Product Structure
Main Components:
- Arc Protection Relay (APR): Detects arc faults via optical signals and current sensors.
- Slave Unit (for protection area expansion):
- Point: Arc accident detection and location identification through point sensor
- Loop: Detecting broad area arc accident through loop sensor
- Selective:
- Arc accident detection and location identification through point sensor
- Apply high-speed semiconductor contact point (HSO, High speed output)
- Arc protection can be performed solely without APR
- Arc Eliminator Controller (AEC): AEC operation by receiving APR operation command through optical communication
- Arc Eliminator (AE): Quickly grounds to extinguish the arc fault.
Operating Principle:
- Optical sensors & CTs detect arc fault incidents.
- The APR precisely identifies the arc fault and sends a trip command within 1.5ms.
- The AE extinguishes the arc fault within 3.5ms.
- The circuit breaker (CB) cuts off the fault current, completing the safe shutdown process.
4. Practical Applications of LS APS
- Industrial Plants: Oil & gas, cement, steel, semiconductor industries.
- Infrastructure: Substations, airports, water treatment plants.
- Buildings, Hospitals, Data Centers: Areas requiring high safety and operational continuity.
5. Why Choose LS ELECTRIC?
- A leading and reputable Korean brand in industrial electrical equipment.
- Comprehensive solutions covering panels, relays, inverters, and safety protection systems.
- Dedicated technical support team and customer-oriented after-sales services.
The LS ELECTRIC Arc Protection System is the optimal choice for businesses seeking to safeguard people, protect assets, ensure electrical safety, and minimize production losses. The solution not only meets international standards but also delivers significant economic benefits.
6. Technical Consultation and Product Quotation
LS ELECTRIC Vietnam hopes this article provides valuable information to our esteemed customers. For further consultation about LS’s APS products and to receive a quotation, please contact us:
- Hotline: 18006870
- Email: hamh@ls-electric.com.vn
