Explosion proof lampu in the substation safety lighting applications

First, why substations have to use explosion-proof lights? –Rigid demand for high-risk environments

In the substation this kind of high-voltage power equipment, flammable insulating media [such as transformer oil] places, Explosion proof lampu are to protect personnel safety and equipment to stabilize the operation of the core equipment. According to the “Electric Power Safety Regulations” requirements, all the presence of explosive gases or dust power facilities must be equipped with Ex d IIB T4 or more explosion-proof grade lighting equipment.

Let’s say in 35kV and above oil-immersed transformer area, if the insulating oil leakage formation of oil and gas mixtures, the traditional lamps and lanterns produce 0.02 Joule spark that may trigger an explosion, and professional Explosion proof lampu approved triple protection mechanism to completely eliminate the hidden danger:

Explosion-proof structure: 8mm thick die-cast aluminum alloy shell can withstand 15MPa explosion impact, preventing the internal spark leakage

Intrinsically safe circuit: limit the circuit energy below 0.19mJ minimum ignition energy, to eliminate the generation of electric sparks

Increased safety sealing: the use of silicone rubber seals and precision machining of the joint surface [tolerance ≤ 0.05mm], the protection level of IP66 or more.

Actual cases show that a 500kV substation will be replaced by ordinary metal halide lamps 150W LED Explosion proof lampu, the annual failure rate from 12 times down to 0 times, maintenance costs reduced by 83%.

Second, explosion-proof lights in the substation core application scenarios – the entire region risk prevention and control

1. high-voltage equipment area [GIS room/circuit breaker areas

SF6 gas leakage inside the switchgear probably form explosive mixtures, Explosion proof lampu need to have anti-arc characteristics. The new Explosion proof lampu adopts double-layer toughened glass + metal protective net design, which can withstand 20kA short-circuit current impact without rupture.

2. Oil-immersed transformer area

For the risk of transformer oil leakage, Explosion proof lampu need to be equipped with oil corrosion-resistant coating and automatic fire-extinguishing linkage device. For example, QC-FB028 Explosion proof lampu with integrated temperature sensor, when the ambient temperature exceeds 120 ℃ automatically triggers the sprinkler system.

3. Battery room and cable mezzanine

Hydrogen accumulation area requires lamps to meet the Ex d IIC T1 explosion-proof grade, and equipped with hydrogen concentration monitoring module. A case of transformation of an extra-high voltage station shows that after the use of intelligent Explosion proof lampu, the response time for hydrogen leakage is shortened to 15 seconds.

4. Emergency evacuation channel

According to GB 50034-2024 guidelines, explosion-proof emergency lighting system needs to meet the 90-minute continuous power supply and ground illuminance ≥ 1lx. The latest products use lithium iron phosphate battery + super capacitor double backup power supply, can still maintain the lighting in extreme environments for 120 minutes.

Third, substation Explosion proof lampu selection 6 technical guidelines

1. Certification compliance must be approved CNEX explosion-proof certification [Ex d IIB T4] and the State Grid testing, give priority to IECEx/ATEX dual-certified products. 2.

2. Optical performance improvement advocating the choice of 120 ° wide-angle light distribution + Ra> 90 high color rendering design, easy to identify the state of the equipment. Let’s say a model approved asymmetric light distribution technology, so that the equipment nameplate illumination uniformity of 0.8 or more.

3. Environmental adaptability -40 ° C ~ +120 ° C wide temperature range work ability, humidity tolerance up to 98% RH [salt spray test ≥ 1000 hours] anti-vibration performance to meet the IEC 60068-2-6 guidelines [5Hz-150Hz, 3-axis for 30 minutes each].

4. Intelligent control system with the help of DALI2.0 protocol and BMS system linkage, can save 45% energy consumption. Integrated sensors can monitor temperature, humidity, gas concentration and other parameters.

5. full life cycle cost of 100W LED Explosion proof lampu, for example, 5 years total cost than the traditional lamps and lanterns to reduce 61% [including electricity, maintenance and replacement costs].

Fourth, Explosion proof lampu installation and maintenance specifications – to avoid 90% of the accident fundamental

Installation guidelines [based on GB 3836.15-2025].

Bracket load-bearing lamps and lanterns need to reach the weight of 2.5 times the depth of expansion bolts ≥ 80mm cable introduction device needs to be used to double the sealing structure [metal glands + epoxy resin potting] grounding resistance value of ≤ 4 Ω, quarterly tests

Common Maintenance Mistakes Warning

× Using organic solvents to clean the explosion-proof glass [special anti-static cleaner should be used].

× Unauthorized replacement of non-original power modules [damage to the integrity of the explosion-proof structure].

× Not replacing seals for more than 3 years [replace silicone seals every 18 months].

A coastal substation failure analysis shows that 72% of the lamps and lanterns failure originated from seal failure resulting in internal corrosion 8.

Fifth. Technology frontier: Explosion proof lampu three revolutionary innovations

1. Self-diagnostic system [2025 new technology].

Approval of the built-in AI chip real-time analysis of voltage fluctuations, temperature profiles and other data, 14 days in advance to predict the failure [92% accuracy], a pilot project to make the maintenance cost down another 37%.

2. Composite energy power supply

Vibration power generation + photovoltaic auxiliary system, completely off-grid operation in an intelligent substation in Shanxi, saving more than 800,000 yuan in annual cable laying costs.

3. Spectral safety monitoring

Adopting 430nm wavelength LED Explosion proof lampu, SF6 concentration can be detected synchronously [sensitivity 0.1ppm], and linkage with gas insulated equipment to form a multi-protection network.

Amasly Lighting, as a leading solution provider of explosion-proof lighting, has supplied customized services many domestic UHV stations. Our Power Ex series products are approved by 97 extreme environment tests and equipped with:

Intelligent Operation and Maintenance Platform [Failure Response <2 hours] Full Life Cycle Cost Simulation System Free Lighting Safety Assessment Service