Overview

The surrounding air temperature does not exceed +40°C, the average daily temperature does not exceed +35°C, and the minimum surrounding air temperature is -15°C.
The effect of sunlight radiation can be ignored.
The altitude does not exceed 1000m.
From the switchgear and control equipment part of the vibration or ground motion and the normal mode of operation of the equipment has no obvious relationship.
In case of using under more than normal use environment conditions, the user shall consult with the Company to determine the permissible range and technical measures.
The surrounding air is not visibly contaminated by dust, smoke, corrosive and/or flammable gases, vapors or salt spray.
Humidity conditions are as follows:
—The average value of relative humidity measured over a 24h period does not exceed 95%; -The average value of water vapor pressure measured over a 24h period does not exceed 95%.
—The average value of water vapor pressure measured in 24h does not exceed 2.2kPa.
—The average value of the relative humidity in January does not exceed 90%;
—The average value of the water vapor pressure measured in 24h does not exceed 2.2kPa.
—The average value of water vapor pressure does not exceed 1.8 kPa in a month; -the average value of water vapor pressure does not exceed 1.8 kPa in a month.
Condensation may occasionally occur under such conditions

Technical Parameters

No.	Items		Unit	Parameters
1	Rated voltage		kV	12
2	Bated frequency		Hz	50
3	Rated current		A	630	1250	1250
				1000	1600	1600
				1250	2000	2000
					2500	3150
4	Rated Insulation Level	Industrial frequency withstand voltage (before and after rated opening)	kV	42
4	Rated Insulation Level	Impulse withstand voltage (before and after rated opening)	kV	75
5	Rated short-circuit breaking current		kA	20	31.5	40
6	Rated short-time withstand current(rated short-time thermal stability current)			20	31.5	40
7	Rated short-circuit shutdown current			50	80	100
8	Rated peak withstand current(rated dynamic stabilizing current)			50	80	100
9	Rated short-circuit duration(rated thermal stabilization time)		s	4
10	Rated sequence of operation			Open 0.3s-close open-180s
10	Rated sequence of operation			Open-180s-close open-180s
11	Rated short-circuit current breaking times		Times	30/20 times (40kA)
12	Mechanical life		Times	20000
13	Rated individual capacitor bank opening current		A	630
14	Rated back-to-back capacitor bank opening current		A	400
15	Heterophase ground fault breaking current		A	27.4
16	Overtravel (contact spring compressionlength)		mm	3.5±0.5
17	Three-phase switching and closing non-simultaneity		ms	≤2
18	Contact closing bounce time		ms	S2
19	Average splitting speed		ms	0.9~1.2
20	Average closing speed		ms	0.5~0.8
21	Breaking time		ms	≤50
22	Closing time		ms	≤100
23	Resistance of each main circuit		μΩ	630As65;1250AS60
24	Allowable wear cumulative thickness of movable and static contacts		mm	3