Outdoor explosion-proof lighting power distribution box vertical steel plate with frequency converter BXM

I. Product definition and core functions

Explosion-proof distribution box is a power distribution equipment specially designed for flammable and explosive places. Through special structure (such as explosion-proof shell and safety enhancement measures) and materials (such as stainless steel and aluminum alloy), electric spark, arc or high temperature generated by internal electrical fault can be prevented from igniting explosive gas or dust in external environment to ensure the safety of personnel and equipment. Its core functions include:

• Explosion-proof isolation: prevents internal explosions from spreading outward.
• Safe power supply: provide stable power supply for lighting, motors, control equipment, etc.
• Environmental adaptation: corrosion resistance, humidity, high temperature and other harsh conditions.

II. Product classification and application scenarios

According to the structure, use and environmental requirements, explosion-proof distribution boxes can be divided into the following types:

1. Classified by explosion-proof structure

• Flameproof type (Ex d)
  • Features: heavy shell (cast aluminum/stainless steel), able to withstand internal explosion pressure, joints designed as flame channels, cooling explosion products.
  • Applicable scenarios: high-risk areas (such as chemical plant reactor, coal mine methane environment).
  • Case: A refinery catalytic cracking unit uses Ex d IIB T4 explosion-proof distribution box to control the power supply of high temperature and high pressure pump.
• Increased safety (Ex e)
  • Features: Internal component insulation strengthened, limiting surface temperature, shell not fully enclosed, low cost, easy maintenance.
  • Applicable scenarios: low-risk areas (e.g. Zone 2/22 gas environment, flour mill packaging workshop).
  • Case: A flour mill packaging workshop using Ex e explosion-proof distribution box, control conveyor belt and baler.
• compound type
  • Features: Combination of flameproof and increased safety structure, switch box flameproof type, bus box and outlet box increased safety type, both safety and cost.
  • Applicable scenarios: medium risk areas (such as oil platforms, pharmaceutical plants).

2. Classification by installation method

• wall-mounted
  • Features: saving space, easy maintenance, suitable for indoor wall installation.
  • Applicable scenarios: laboratories, control rooms and other places with limited space.
• Upright
  • Features: Compact structure, good heat dissipation performance, suitable for ground or bracket installation.
  • Applicable scenarios: beside large equipment, production line.
• mobile
  • Features: Portable design, suitable for temporary operations or rescue scenarios.
  • Applicable scenarios: field exploration, emergency repair.

3. Classification by Material

• Stainless steel explosion-proof distribution box
  • Features: strong corrosion resistance, suitable for seashore, chemical plants and other strong corrosion environment.
  • Case: A coastal chemical plant uses 316 stainless steel explosion-proof distribution box to control the reactor power supply.
• Aluminum alloy explosion-proof distribution box
  • Features: light weight, high strength, good heat dissipation performance, suitable for a variety of complex environments.
  • Case: An oil field drilling platform uses aluminum alloy explosion-proof distribution box to control drilling rig motor.
• Engineering plastic explosion-proof distribution box
  • Features: light weight, good insulation, suitable for light load, non-metallic spark requirements of high areas.
  • Applicable scenarios: food processing plants, textile factories.

III. Key technical parameters

1. explosion-proof grade
   • Gas group: IIC (hydrogen, acetylene) IIB (ethylene) IIA (propane).
   • Temperature group: T1 (450℃)~ T6 (85℃), lower than the spontaneous combustion point of combustible substances in the environment.
   • Example: ExdIICT6 indicates flameproof type, suitable for hydrogen environment, * high surface temperature does not exceed 85℃.
2. Degree of protection (IP code)
   • IP54: Dustproof, splash proof, suitable for indoor general environment.
   • IP65: completely dustproof, spray resistant, suitable for outdoor or humid environment.
   • IP68: completely dustproof, long-term immersion, suitable for underwater operations.
3. rated parameters
   • Voltage: AC220V, 380V, 660V, etc., to match the power supply system.
   • Current: 16A, 63A, 250A, etc., 1.2~1.5 times margin should be reserved when selecting.

IV. Product advantages and trends

1. advantage
   • High safety: through the national explosion-proof certification (such as CNEX, ATEX), to ensure reliable operation in explosive environments.
   • Customization: support modular design, free assembly of circuits, to meet the needs of different scenarios.
   • Durability: the shell material corrosion resistance, impact resistance, adapt to harsh environment.
2. development tendency
   • Intelligent: integrate IoT, big data and artificial intelligence to achieve remote monitoring, fault prediction and automatic processing.
   • Energy saving: LED lighting, intelligent dimming and other means to reduce energy consumption.
   • Interconnection: integrate into the industrial Internet to achieve efficient collaboration and remote operation and maintenance among equipment.

V. Selection and use suggestions

1. Environmental assessment: Identify explosive gas/dust types and hazardous area levels (Zone 1/21 or Zone 2/22).
2. Explosion-proof grade matching: Ex d type in high risk area and Ex e type in low risk area.
3. Material selection: stainless steel in corrosive environment, aluminum alloy in general environment.
4. Installation specification: ensure reliable grounding (resistance 4), tight cable sealing, avoid static electricity or gas intrusion.
5. Periodic maintenance: Check flameproof surfaces, seals and terminals to prevent aging or damage.