NSGTG-35
The 35kV solid insulated ring main unit is the main core equipment of the domestic ultra-high voltage distribution network backbone network. It adopts the ultra-high voltage special modified epoxy resin integrated casting process, fully sealed and packaged high voltage conductors, vacuum circuit breakers, intelligent monitoring units and other core components. It strictly follows high standards at home and abroad such as GB/T 11022 and IEC 62271, and is suitable for the strict requirements of ultra-high voltage distribution network backbone network connection, large-scale energy base collection, high-end industrial heavy-duty distribution, etc. under the 35kV voltage level. The product has the characteristics of high insulation strength, high load-bearing capacity, and intelligent integration, and is a benchmark equipment for the upgrading and construction of modern ultra-high voltage distribution networks.
using modified epoxy resin specifically for ultra-high voltage, with a breakdown strength of ≥ 35kV/mm, optimizing overvoltage protection and insulation spacing design, can effectively resist risks such as lightning overvoltage and operational overvoltage, and the insulation failure rate tends to zero, ensuring the continuous operation of the ultra-high voltage backbone network.
The rated current can reach 2000A-2500A, the rated short-circuit breaking current is 50kA-63kA, and it can stably carry the collection load of large energy bases and industrial ultra-high voltage heavy loads. It has excellent grid connection switching capabilities and can effectively cope with the impact of new energy output fluctuations.
Equipped with online monitoring of partial discharge, insulation status assessment, and precise fault location modules, it uses 5G+AI data analysis technology to achieve early fault prediction and accurate positioning, supports access to distribution network automation systems, and adapts to unmanned operation and maintenance mode of ultra-high voltage distribution networks.
optimized control logic and interface design, seamless integration with large-scale energy storage systems, supporting energy storage charging and discharging scheduling, emergency backup power switching, with a switching time of ≤ 30ms, meeting the requirements of integrated construction of “source, network, and storage” in large-scale new energy bases.
adopting double-layer sealing and anti-corrosion reinforcement technology, with a protection level of IP65, it can operate stably in extreme temperatures of -45 ℃~+85 ℃, high altitudes (≤ 5000m), and strong salt spray environments, and is suitable for outdoor, high-altitude, coastal and other complex scenarios.
Execution standards: GB/T 11022, IEC 62271-200, DL/T 1484, GB/T 3804; Rated parameters: rated current 2000A-2500A, rated short-circuit breaking current 50kA-63kA, rated short-time withstand current 63kA/5s, protection level IP65, operation mode supports manual, electric, remote intelligent control; Material configuration: ultra-high voltage modified epoxy resin, high conductivity copper conductor (silver plated thickened treatment), 3.0mm reinforced anti-corrosion cabinet body; Customized services: Energy storage scheduling module, arc protection, AI operation and maintenance warning can be installed, supporting intelligent distribution network platform docking and transformation.
Providing you with the most trusted energy solutions in an unpredictable world.
Contact Us| Name | Unit | Parameter | |||
| Rated voltage | kV | 35 | |||
| Rated frequency | Hz | 50 | |||
| Current rating | A | 630 | 1250 | ||
| Rated insulation level | Power frequency withstand voltage | Fracture | kV | 80 | |
| Fireline to Fireline | kV | 70 | |||
| Fireline to ground | kV | 70 | |||
| Withstand voltage for lightning impulses | Fracture | kV | 215 | ||
| Fireline to Fireline | kV | 185 | |||
| Fireline to ground | kV | 185 | |||
| 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 | ||||
Excellent adaptability, supporting multiple scheduling modes such as grid connected energy replenishment, peak shaving and valley filling, emergency backup, etc. It can automatically respond to grid scheduling instructions through intelligent controllers, achieving the coordinated operation of energy storage systems and ultra-high voltage distribution networks.
No special modification is required. The insulation structure and conductor spacing have been optimized for high-altitude and low-pressure environments. Through high-altitude special testing, it can operate stably in a 5000m high-altitude scenario and is suitable for high-altitude new energy bases.
Positioning accuracy ≤ 0.3m, response time ≤ 20ms, can quickly lock the fault location and trigger warning, combined with AI prediction function, provides accurate maintenance basis for operation and maintenance personnel, greatly reducing the time for fault disposal.
35kV is the mainstream level of domestic ultra-high voltage distribution network, with wider adaptability and a focus on backbone networks and new energy bases; 40.5kV focuses on ultra-high voltage core and top-level energy hub, with ultimate carrying capacity and insulation level.
The temperature rise control reaches the top level in the industry, and the conductor adopts an efficient heat dissipation structure design. The temperature rise under rated load is ≤ 60K, far below the national standard limit. It can operate continuously under heavy load for a long time without any potential heating faults.