Properties of the NIOES

• State-of-the-art concept: Rapid oil drainage to prevent explosions and Nitrogen injection to prevent and extinguish fires.

• Superior Performance: Uses quick drain valves to drain oil in seconds using advanced technology.

• Quick response: When a fault signal is detected from the transformer. The oil is drained within one second of detection to relieve pressure and prevent an explosion. After 1-20 seconds, nitrogen gas is injected to mix and cool the oil, reduce the concentration of flammable gases, isolate the oxygen gas and extinguish the fire.

• Reliability: Using the logic signal principle to prevent inappropriate or unnecessary activity in the system and provide a more flexible system.

• High Efficiency:Can continuously inject nitrogen for more than 30 minutes to completely cool the transformer oil and prevent and extinguish fires.

• Pollution Reduction: No pollution due to the properties of nitrogen gas. Extinguishing a fire without water is advantageous compared to extinguishing it without water.

• Feasibility: Easy installation and maintenance for new and existing transformers with reasonable investment and low cost compared to other traditional transformer fire extinguishing systems such as water spray systems and CO2 spray systems.

• Features: The explosion-proof and fire-extinguishing system can extinguish the fire immediately by injecting nitrogen into the transformer casing. Nitrogen could be injected continuously for 30 minutes to mix and cool the transformer oil while isolating the air from the tank.

A range of applications

• The performance of the generator continues to increase as technology develops. Many transformer explosions occurred due to an ineffective circuit breaker between the generator and the power transformer.

• Nitrogen injection systems are suitable for new or remanufactured power transformers in high power plants, substations, indoor substations, underground substations, municipal substations, and rare cold-water areas.

How a transformer explodes and catches fire

• Arcing occurs due to an internal fault in the transformer and high energy flow through the transformer, which causes insulation/oil degradation at high temperatures. The surface of the oil reaches a temperature that is above the ignition temperature. Enormous heat energy is generated and flammable gases are produced. An increase in pressure that causes the tank to burst, usually at the top. Hot oil ignites when it meets oxygen.