NSGTG-7.2
The 7.2kV solid insulated ring main unit is a high-end distribution equipment designed for heavy-duty scenarios and high insulation requirements in medium voltage distribution networks. It adopts epoxy resin materials and structural design adapted to ultra-high voltage levels, and integrates core components such as high-voltage conductors, circuit breakers, and transformers. It strictly follows standards such as GB/T 11022 and IEC 62271, and is suitable for heavy-duty power supply, ring network connection, and critical load distribution needs at 7.2kV voltage levels. The product has the characteristics of high insulation strength, high impact resistance, and intelligent integration, which can meet the strict requirements of large-scale industrial, high-altitude power stations, important municipal facilities and other scenarios, ensuring the stable operation of the core links of the distribution network.
The epoxy resin insulation material adopts an ultra-high voltage formula, with a breakdown strength of ≥ 30kV/mm and an insulation margin increased by 20% compared to ordinary products. It can effectively resist risks such as overvoltage and insulation aging, and is suitable for high insulation requirements of 7.2kV level scenarios.
The rated current can reach 1250A-1600A, and the rated short-circuit breaking current can reach 31.5kA-40kA. It can stably carry heavy loads such as large industrial equipment and high-power power stations, cope with frequent start stop and overload impact, and has no heating or fault hazards.
Standard configuration includes partial discharge monitoring, online temperature and humidity monitoring, and insulation status monitoring modules, which can collect real-time equipment operation data and provide early warning of potential faults such as insulation degradation and poor contact through big data analysis, avoiding sudden shutdowns.
-Enhanced sealing, suitable for extreme working conditions: The cabinet adopts a double-layer sealing structure with a protection level of IP65. Combined with temperature resistant and aging resistant materials, it can operate stably in harsh environments such as -45 ℃~+80 ℃ extreme temperature, high altitude (≤ 5000m), and strong ultraviolet radiation, with no dead corners in working condition adaptability.
equipped with perfect five prevention interlocking (anti misoperation, anti load pull switch, anti accidental entry into live intervals, etc.), grounding protection, and fault isolation functions, it can effectively avoid safety accidents caused by personnel misoperation and equipment failure, and ensure the safety of the core power distribution process.
Execution standards: GB/T 11022, IEC 62271-200, DL/T 1484; Rated parameters: rated current 1250A-1600A, rated short-circuit breaking current 31.5kA-40kA, rated short-time withstand current 40kA/5s, protection level IP65; Material configuration: ultra-high voltage epoxy resin, conductor made of high conductivity copper (silver plated), cabinet made of reinforced anti-corrosion cold-rolled steel plate; Customized service: energy storage module, arc protection device, 5G+edge computing module can be added to meet the requirements of intelligent distribution network core nodes.
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Contact Us| Name | Unit | Parameter | |||
| Rated voltage | kV | 7.2 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 23 | |
| Fireline to Fireline | kV | 20 | |||
| Fireline to ground | kV | 20 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 46 | ||
| Fireline to Fireline | kV | 40 | |||
| Fireline to ground | kV | 40 | |||
| Rated short-circuit interrupting current(1s) | kA | 20 | 25 | ||
| Rated short-time withstand current(4s) | kA | 20 | 25 | ||
| Rated peak withstand current(1p) | kA | 50 | 63 | ||
| Rated short-circuit closing current (peak)(1ma) | kA | 50 | 63 | ||
| Enclosure rating | IP4X | ||||
| Operating mode | Spring-loaded energy storage | ||||
Yes, the insulation structure and conductor spacing have been optimized for high-altitude and low-pressure environments without the need for additional modifications. It can operate stably in high-altitude scenarios up to 5000m and is suitable for high-altitude power stations, mines, and other projects.
Monitoring data can be uploaded in real-time to a cloud platform through 5G and fiber optics. The platform has data analysis and abnormal warning functions, and supports local storage and backup. It can be viewed through a mobile app or computer for remote control.
The initial procurement cost is slightly lower by 10% -15%, and there are no later costs such as gas leakage, replenishment, and recycling. The comprehensive cost of the entire life cycle is reduced by more than 30%, and it is more in line with environmental policies, with no greenhouse gas emission risks.
Support, with fast switching function, switching time ≤ 50ms, can adapt to the emergency backup power supply contact needs of important loads, ensuring that critical equipment can quickly switch to the backup power supply in case of main power failure, avoiding downtime losses.
The service life of insulation components is ≥ 30 years. After aging, they can be replaced by modular disassembly without the need to disassemble the cabinet as a whole. The manufacturer provides professional replacement services and original spare parts, and the original performance of the equipment can be restored after replacement.