Indoor high-voltage vacuum circuit breakerDetailed product description：

1. Overview

CV1-24 indoor high-voltage vacuum circuit breaker is suitable for AC 50Hz, rated voltage 24kV, rated current 630A~3150A, as protection and control for power lines and power equipment in industrial and mining enterprises. There are fixed and handcart types, and the handcart type is suitable for armored central cabinets such as KYN28A-24. Strict cabinet matching tests ensure interchangeability; Rated power frequency withstand voltage of 65kV/1min, with a break distance of 79 kV/1min; Rated lightning impulse withstand voltage of 125kV, with a break distance of 145kV; rated short-circuit breaking current of 25kA~31.5kA, rated short-time withstand current of 25kA~31.5kA/s;
Adopting domestic first-class manufacturers' vacuum arc extinguishing chambers, with low maintenance and high reliability, suitable for frequent operation or multiple short-circuit current breaking;
Adopting mature and reliable spring operating mechanisms, strict testing methods, and complete characteristic curve records to ensure high product quality;
According to GB1984 standard, it has extended electrical life E2 level, extended mechanical life M2 level, and capacitive current switching C2 level;

The circuit breaker meets the following standards:
IEC60694 GB/T 11022 "Common Technical Conditions for High Voltage Switchgear and Control Equipment"
IEC62271-100 GB 1984 "High Voltage AC Circuit Breakers"
JB 3855 High Voltage AC Vacuum Circuit Breaker
DL/T 403 "Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breakers"
DL/T615 "Guidelines for Parameter Selection of AC High Voltage Circuit Breakers"
Q/GDW "Technical Specification for 20kV Circuit Breakers"

2. Normal usage conditions
Environmental temperature: maximum temperature+40 ℃, average value measured within 24 hours not exceeding+35 ℃, minimum temperature -5 ℃;
Altitude not exceeding 1000m;
The surrounding air is not significantly polluted by dust, smoke, corrosive gases and/or flammable gases, vapors and salt spray;
Environmental humidity: The daily average relative humidity is not greater than 95%, the daily average vapor pressure is not greater than 2.2 × 10-3MPa, the monthly average relative humidity is not greater than 90%, and the monthly average vapor pressure is not greater than 1.8 × 10-3MPa;
Vibration or ground motion from outside the switchgear and control equipment can be ignored;
The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.

3. Technical parameters
Technical parameters of CV1-24 indoor high-voltage vacuum circuit breaker

project		unit	data
Rated voltage Ur		kV	twelve
Rated insulation level	1-minute power frequency withstand voltage Ud (effective value)	kV	Fracture, phase to phase, ground to ground	forty-two
	Lightning impulse withstand voltage Up (peak)	kV	Fracture, phase to phase, ground to ground	seventy-five
Rated frequency fr		Hz	fifty
Rated current Ir		A	630, 1250, 1600, 2000, 2500, 3150, 4000
Rated short-circuit breaking current Isc (effective value)		kA	25, 31.5, 40, 50
Rated peak withstand current Ip		kA	63, 80, 100, 125
Rated short-circuit closing current		kA	63, 80, 100, 125
Rated short-time withstand current Ik (effective value)		kA	25, 31.5, 40, 50
Rated short-circuit duration tk		s	four
Rated back-to-back capacitor bank breaking current Ibb (effective value)		A	four hundred
Rated back-to-back capacitor bank closing inrush current Ibi (peak)		kA	20 (frequency 4250Hz)
Rated cable charging breaking current Ic (effective value)		A	twenty-five
Rated operating sequence		Automatic reclosing: O-0.3s-CO-180-CO
		Non automatic reclosing: O-180s-CO-180-CO
Rated power supply voltage Uop for closing and opening devices		V	AC：110, 220； DC：110, 220
Rated power supply voltage Ua of auxiliary circuit		V	AC：110, 220； DC：110, 220
Mechanical lifespan*	210mm phase to phase distance circuit breaker	time	twenty thousand
	Circuit breakers with phase spacing of 150mm and 275mm		ten thousand
Classification: Mechanical life/Electrical life/Capacitive current breaking		M2/E2/C2