VTG-12 Solid-Sealed Indoor High-Voltage AC Vacuum Circuit Breaker

VTG-12 Solid-Sealed Indoor High-Voltage AC Vacuum Circuit Breaker

1.1 Suitable for switching various loads with different properties and frequent operations in three-phase AC 50Hz, 10kV power system.
1.2 For protection and control of electrical equipment used in industrial and mining, enterprises, power plant, and substation.
1.3 With central handcart type switch cabinet and XGN fixed switch cabinet provided for KYN28A-12(GZS1).

Inquiry

Catalog

VTG-12.pdf

Certificate

Overview

No.	Name	Unit	Value
1	Rated voltage	kV	12
2	Rated power frequency withstand voltage(1 minute)		42
3	Rated lightning impulse withstand voltage(peak)		75
4	Rated frequency	Hz	50
5	Rated current	A	630 1250	630 1250 1600 2000 2500 3150	1250 1600 2000 2500 3150 4000
6	Rated circuit-breaker breaking current	kA	20、 25	31.5	40
7	Rated short-circuit making current (peak)		50、 63	80	100
8	Rated short-time withstand current		20、 25	31.5	40
9	Rated peak withstand current		50、 63	80	100
10	Rated operating voltage	V	AC/DC220、 AC/DC110

Working environment conditions:

1.1 The ambient air temperature does not exceed 40°C, the average measured within 24h does not exceed 35°C, and the minimum ambient air temperature is -15°C;

1.2 Altitude: Not higher than 1000m;

1.3 The surrounding air is not polluted obviously by dust, smoke, corrosive or flammable gas, steam, and salt mist;

1.4 Humidity conditions: daily mean value is not greater than 95%; monthly mean value is not greater than 90%; the average of water vapor pressure is not greater than 2.2kPa; the average of the monthly water steam pressure is not greater than 1.8KPa;

1.5 Vibration or ground movement from the outside of switchgear or control equipment can be negligible;

1.6 The amplitude of the conduced electromagnetic interference in the secondary system cannot exceed 1.6kV;

1.7 Special use conditions

If the altitude at the installation site exceeds 1000m, or the ambient air temperature exceeds the limit specified in the normal working conditions or the installation site is highly humid to easily cause condensation, please contact our company for customization.