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126kV複合開閉装置

TBDG-126
Adopting an aluminum alloy shell three-phase box structure, each phase is composed of main high-voltage electrical components such as circuit breakers, three position isolation grounding switches, current transformers, and inlet and outlet bushings. The primary circuit is connected to the open air insulated busbar of the substation using conduit in and out wiring, making it an ideal equipment for photovoltaic wind power projects, prefabricated substations, and vehicle mounted substations.

Product Advantages
The overall structure is compact, occupies a small area, and has low requirements for civil engineering.
Modular design, various modules can be flexibly combined to achieve multiple wiring forms.
Double sealed outdoor design, meticulous environmental protection structure.
Overhead busbars have significantly reduced SF6 gas usage, are fully insulated, maintenance free, and have low costs throughout their entire lifespan.
Reliable performance, with an annual air leakage rate of less than 0.1%, a mechanical lifespan of 10000 times for the entire machine, and an electrical lifespan of 20 times for the circuit breaker.
Application Scenarios
This product can be applied in a wide range of fields such as State Grid, Southern Power Grid, new energy, petroleum and petrochemical, steel metallurgy, municipal construction, etc., providing strong support for energy transmission.
Technical Specifications

Parameter name	Unit	Parameter value
Rated Voltage	kV	126
Rated frequency	HZ	50/60
Rated current	A	2500
Rated short-circuit breaking current	KA	40
Rated short-time withstand current	KA	40
Rated short-circuit current duration	S	4
Rated peak withstand current	kA	100
Short time power frequency withstand voltage (to ground/break)	kV	230kV/230+73
Lightning impulse withstand voltage (to ground/fracture)	kV	550kV/550+103
Mechanical life	Time	10000
Annual gas leakage rate	%	≤0.1

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