Turkmenistan electrical distribution box specifications and models

In Turkmenistan, electrical distribution boxes are primarily classified by type, voltage, current rating, and application, with the XL-21 low-voltage cabinet being a common standard for industrial and civil installations.Types and ApplicationsThe XL-21 type low-voltage power distribution cabinet is widely used in Turkmenistan for industrial, mining, civil buildings, schools, and government institutions. It supports both single-phase and three-phase systems with frequencies of 50Hz to 60Hz and is suitable for IT, TN-C, and TT systems (formerly three-phase three-wire and three-phase four-wire systems) for power and lighting distribution . Other distribution boxes may vary in size and configuration depending on the application, such as commercial vehicles or construction sites .Technical SpecificationsRated main circuit voltage: AC 380VRated insulation voltage: AC 660VRated frequency: 50HzRated current: ≤800AAuxiliary circuit voltage: AC 220V or AC 380VProtection level: IP30, compliant with IEC 60439-1 and GB7251.1 standardsOperating environment: Ambient temperature -5°C to +40°C, altitude ≤2000 meters, relative humidity ≤50% at +40°C (higher humidity allowed at lower temperatures)Construction: Indoor, wall-mounted, single-sided front-opening, made of bent steel plates and welded angle steel, with grounding screws for reliable earthing .Components and FeaturesXL-21 cabinets can include:Air circuit breakers and fuses for short-circuit protectionContactors and thermal relays for load controlKnife switches for power disconnection and connectionOperation buttons, indicator lights, and display instruments on the front door for monitoring and controlFlexible circuit scheme combinations for easy maintenance and adaptability .Classification CriteriaElectrical distribution boxes in Turkmenistan are generally classified based on:Voltage level: Low-voltage (≤1000V) or medium-voltage (1kV–35kV)Current rating: Determined by the load requirements, typically up to 800A for low-voltage cabinetsSystem type: Single-phase or three-phase, IT, TN-C, or TT systemsInstallation environment: Indoor or outdoor, wall-mounted or floor-standingProtection and safety standards: Compliance with IEC and national standards for insulation, grounding, and IP protection .SummaryTurkmenistan's electrical distribution boxes, particularly the XL-21 type, are designed for robust, flexible, and safe power distribution in industrial, commercial, and civil applications. Classification is based on voltage, current, system type, and environmental conditions, ensuring compatibility with local electrical infrastructure and international standards .