Экологически чистые газонаполненные распределительные устройства(12kV)

Серия ZTNAir-12 является модульным, полностью герметичным газонаполненным распределительным устройством без SF₆, предназначенным для распределения, управления и защиты среднего напряжения. Оно широко используется в коммунальных сетях, промышленных предприятиях и приложениях возобновляемой энергии.

Описание продукта
  • ZTNAir-12 series comprises fully-sealed gas-insulated HV switchgear conforming to IEC 62271-1 and GB/T 3906.Integrating VCBs, three-position disconnectors, earthing switches, CTs and VTs, it provides monitoring, control and protection for 10 kV networks. On short-circuit, overload or earth faults, the protective relay trips the breaker to clear the fault and safeguard the rest of the system; local/remote close-open operation is available via the control circuit, while CTs/VTs feed signals to protection and metering for real-time monitoring and data logging.
Преимущества продукта
  •  Modular Compact Structure: Equipped with vacuum circuit breakers and three-position disconnectors; cabinet widths available in 550 / 600 / 800 / 1000 mm, depths of 1150 mm / 1450 (1650) mm. Complete five-safety mechanical interlocks effectively prevent mal-operation; the fully-sealed gas tank isolates live HV parts from the external environment.
  •  Excellent Electrical Performance: Rated currents cover 630 A, 1250 A, 2500 A and 3150 A; rated short-circuit breaking currents of 31.5 kA and 40 kA, meeting the current-carrying and breaking requirements of distribution systems across different capacities.
  • Intelligent Management: Can integrate digital measuring & control instruments, wireless temperature monitoring, and gas-density monitoring modules (optional); supports communication protocols such as Modbus and interfaces with SCADA and distribution-automation systems to enable equipment status acquisition, fault alarm, and remote O&M.
  •  High Safety Protection: Fully-sealed, fully-insulated gas tank isolates the equipment from external conditions such as humidity, dust and condensation. Equipped with a directional pressure-relief channel; the enclosure uses high-strength anti-corrosion panels to ensure reliable operation under harsh conditions.
  •  Green & Eco-Friendly: Uses dry air or N₂ as the insulating medium — no SF₆ greenhouse gas — eliminating the compliance costs of SF₆ recovery, leak detection, and supporting the achievement of the “dual-carbon” goals.

Key Technical Parameters of ZTNAir Switchgear

FeatureunitСпецификация
Rated voltgeкВ12
Rated frequencyHz50/60
Rated power frequency withstand voltage(1min)кВ42(main circuit,phase-to-ground & phase-to-phase) / 48(breaker isolation gap,across open contacts)
Rated currentA6301250125025003150
Rated short circuit breaking currentкА202531.531.540
Rated peak withstand currentкА50638080100
Rated short-circuit durations4
Mechanical endurance (3-position disconnector / circuit-breaker)times5000/200003000/10000
Insulating gas/dry air or N₂
Degree of protection (cabinet / gas tank)/IP41/IP67
Rated filling pressureMPa0.02
Gas leakage rateper year≤0.01%
Enclosure dimensions(WxDxH)mmмм550/600/800/1000×1150/1450(1650)×2400

It is widely used in urban distribution networks, industrial and mining enterprises, rail transit, and new-energy projects, for high-voltage power distribution, control, and protection.

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