Solid Insulation Intelligent Ring Main Unit

We have developed the GTXGN-12 Solid Insulation Intelligent Ring Main Unit, which stands as a new generation of maintenance-free products designed with a focus on green and pollution-free principles. This product is distinguished by its compact size, safety and reliability, and integrated intelligent features. It perfectly combines vacuum technology with insulation technology, enabling it to completely replace SF6 gas in arc extinguishing and insulation performance, thereby aligning with national requirements for reducing exhaust gas pollution from electrical products.

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Description
Parameter

Within the same power supply unit, the GTXGN-12 Solid Insulation Intelligent Ring Main Unit's three phases (A, B, and C) are each comprised of independent modules, offering flexible and diverse combination solutions for the distribution network. Its composite insulation design integrates load switches, circuit breakers, and various operating functions, including both manual and electric options. By selectively equipping it with various intelligent controllers, such as FTU, and other related devices, this product can achieve different levels of control, measurement, and protection capabilities.

The GTXGN-12 Solid Insulation Intelligent Ring Main Unit offers highly flexible equipment combinations, allowing users to configure control equipment and optional devices in stages according to their investment phases. This approach provides strong upgrade capabilities and effectively saves on investment costs. Its main technical parameters include a rated voltage of 12/24kV, a power frequency withstand voltage of 42/50kV, and a lightning impulse withstand voltage of 95/125kV. The rated current range can reach 630/630A or 1250/800A.

In terms of breaking capacity, the short-circuit breaking current can reach up to 25(20)kA, and the closing capacity can be as high as 63/52.5kA. Furthermore, this product demonstrates mechanical life, with both load switches and vacuum switches offering a mechanical life of up to 5000 operations.

Technical parameter		V type	C type	F type
Rated voltage (kV)		12	12	12
Rated frequency (Hz)		50	50	50
Rated current (a)		630	630	630
Rated short-circuit breaking current (kA)		31.5		31.5
Rated short-circuit breaking current for load switch(A)		1	10	10
Rated short-circuit breaking current during transfer(kA)		31.5	20	1
Rated short-circuit withstand time(S)		3	3	1
Rated peak short-circuit withstand current(kA)		80	50	1
Rated dynamic stability current(kA)		80	50	1
Rated circuit breaker breaking current(A)		/		3150
Rated circuit breaker breaking current(kV)	phase-to-phase	75	75	75
Rated circuit breaker breaking current(kV)	phase-to-ground	85	85	85