The **FVF-FG-R/Q** series typically refers to a specialized range of **Flameproof/Explosion-proof LED Linear Light Fittings**, commonly used in hazardous industrial environments (such as oil refineries, chemical plants, and offshore platforms). Below is a breakdown of the electronic components and technical specifications associated with these units. --- ### 1. Core Electronic Components The reliability of these units depends on high-grade electronic architecture designed to withstand thermal stress and prevent ignition. | Component | Description | Function | | :--- | :--- | :--- | | **LED Module** | High-efficacy SMD LED chips (often Osram or Philips). | Converts electrical energy into light with high lumens-per-watt ratio. | | **LED Driver** | Constant current, wide-voltage driver (100-240V AC). | Regulates power, provides over-voltage, and short-circuit protection. | | **EMC Filter** | Electromagnetic Compatibility circuit. | Suppresses electromagnetic interference (EMI) to and from the device. | | **Emergency Battery** | Ni-Cd or Lithium battery pack (Optional 'Q' variants). | Provides 90–180 minutes of illumination during power failures. | | **Heat Sink** | Anodized aluminum extrusion. | Dissipates heat away from the electronics to ensure long L70 lifespan. | --- ### 2. Technical Specifications These parts are engineered to meet specific international safety standards (ATEX/IECEx). * **Input Voltage:** 90V – 264V AC, 50/60Hz. * **Power Factor:** >0.95 (Highly efficient power usage). * **Ingress Protection:** IP66 or IP67 (Dust-tight and protected against powerful water jets). * **Temperature Class:** T6 (Surface temperature will not exceed 85°C). --- ### 3. Suffix Identification (R/Q) The letters at the end of the model number usually denote specific electronic configurations: 1. **"R" (Standard/Remote):** Refers to the standard lighting configuration or, in some catalogs, models designed for specific mounting/reflector types. 2. **"Q" (Emergency):** This indicates the inclusion of an **Emergency Inverter** and a **Battery Backup system**. When the main power cut occurs, the electronic switch automatically shifts to the DC battery source. --- ### 4. Circuit Protection Features To operate in "Zone 1" or "Zone 2" hazardous areas, the electronics include: * **Soft Start Technology:** Prevents current surges that could cause sparking. * **Encapsulated Electronics:** The driver is often "potted" (filled with resin) to prevent any internal spark from contacting the outside atmosphere. * **Automatic Disconnect:** A safety switch that cuts power to the internal electronics when the light casing is opened for maintenance. ---