EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breakerDetailed product description：

The EVH3R-2X31.5/T2000-31.5 series railway specific single-phase bipolar vacuum circuit breaker is a single-phase AC 50Hz, rated voltage of 31.5kV, suitable for indoor single-phase bipolar circuit breakers with miniaturized C-GIS. Specially used for railway substations and partition pavilions, for power supply, protection, and control of railway traction systems.
The circuit breaker adopts an integral layout, and the operating mechanism is an independent module with independent models. By adopting this form, the structure becomes simple and compact, and the mechanism can be individually packaged and then combined with the circuit breaker, greatly improving production efficiency and also greatly enhancing the mechanical operation reliability of the circuit breaker. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front to back manner, with a reasonable structure and small volume.
The energy storage part, transmission part, buffering part, tripping part, and mechanical interlocking of the operating mechanism are all integrated into one, with only one output interface connected to the main circuit. The mechanism is composed of various forces in the mechanism, and the design will fully consider the effect of each force in the mechanism, making the arrangement of the transmission mechanism reasonable to ensure the minimum deformation of components. This not only ensures performance but also improves the reliability of the mechanism.

Characteristics of EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breaker

The main circuit structure is uniquely designed with uniform electric field distribution, high insulation performance, optimized mechanical structure design, and high strength.  
The installation plate with thin plate welding and sealing ring structure is easy to manufacture, has high strength, and low cost.  
The closing spring adopts a compression spring and a double sheet thin steel plate guide structure, which is compact in structure and stable in performance.  
The outer surface of the vacuum impregnated insulation rod has a smooth arc transition, a reasonable structure, high mechanical strength, and good insulation performance.  
The compression and transmission structure design of the contact spring is innovative, cleverly converting rotational motion into linear motion, and the pressure of the contact spring is very easy to adjust.  
The connection structure between the insulation rod and the corrugated pipe guide rod is reliable and easy to assemble.  
The circuit breaker panel is aesthetically pleasing and elegant.

Technical parameters of EVH3R-2X31.5/T2000 series railway specific single-phase bipolar vacuum circuit breaker

serial number	parameter name					unit	Numerical value
one	rated voltage					kV	2X31.5
two	Rated insulation level		1-minute power frequency withstand voltage (effective value)		to the ground	kV	ninety-five
					fracture		ninety-five
					Jijian		one hundred and forty
			Lightning impulse withstand voltage (peak value)		to the ground		two hundred
					fracture		two hundred and fifteen
					Jijian		three hundred and twenty-five
three	use altitude					rice	two thousand
four	rated frequency					Hz	fifty
five	rated current					A	two thousand
six	Rated short-time withstand current					kA	thirty-one point five
seven	Rated peak withstand current					kA	eighty
eight	Rated short-circuit current duration					s	four
nine	Rated short-circuit breaking current			Effective value of communication component		kA	thirty-one point five
				Percentage of DC component			48%
ten	Rated operating sequence						O-0.3s-CO-180s-CO
eleven	Rated short-circuit closing current					kA	eighty
twelve	Rated main circuit resistance (between dynamic and static output lines)					μΩ	≤15
thirteen	mechanical life					time	ten thousand
fourteen	Auxiliary and control circuits	Rated power supply voltage				V	DC、AC220 DC、AC110
		Rated power frequency				Hz	fifty