Mauritania High Voltage Distribution Box Models and Specifications

ZBW-type prefabricated substations are the primary high-voltage distribution boxes used in Mauritania, offering integrated high-voltage switchgear, transformers, and low-voltage distribution in compact, modular units.Overview of ZBW-Type Prefabricated SubstationsThe ZBW□ type prefabricated substation is a complete distribution solution combining high-voltage switchgear, distribution transformers, low-voltage switchgear, energy metering devices, and power factor compensation equipment in one or multiple enclosures according to wiring schemes . These substations are widely deployed in urban high-rise buildings, residential communities, industrial and mining enterprises, street lighting, hotels, airports, docks, shopping malls, and infrastructure construction sites.Technical SpecificationsTransformer Rated Capacity: 50, 100, 125, 160, 200, 250, 315, 400, 500, 630, 800, 1000, 1250, 1600 kVARated Frequency: 50 HzVoltage Level: 10/0.4 kV networkProtection Level: IP23DPollution Level: II or IIIEnvironmental Tolerances:Ambient temperature: -25°C to 40°CRelative humidity: ≤ 90% (monthly average at 25°C)Wind speed: ≤ 34 m/sIce thickness: ≤ 20 mmAltitude: ≤ 1000 mGround pressure: withstands up to 20 tonsInstallation Requirements: Locations free from fire, explosion, severe pollution, chemical corrosion, or intense vibration; ground slope ≤ 5% .Structural FeaturesBase Frame: Welded channel steel for high strength and rigidityEnclosure Material: Composite materials with strong radiation resistance to reduce solar heat gainDesign Advantages: Compact footprint, short installation cycle, safe and reliable operation, aesthetically harmonious with surroundings Applications in MauritaniaThese distribution boxes are integrated into regional transmission and rural electrification projects, such as the 225 kV Nouakchott-Kiffa transmission line, which includes multiple substations to ensure efficient power distribution and integration of renewable energy sources . They support both urban and rural electrification, improving grid reliability and enabling connection of solar PV plants.Additional NotesWhile ZBW-type substations are the standard for Mauritania's medium-voltage distribution, high-voltage power distribution units (HV PDUs) and high-voltage distribution boxes used in industrial or EV applications share similar functions, including power routing, short-circuit protection, insulation monitoring, and centralized distribution, though they may operate at different voltage ranges (60–1000 VDC) and are designed for specialized environments . These specifications make ZBW-type substations a versatile and reliable choice for Mauritania's expanding electrical infrastructure, supporting both conventional and renewable energy integration.