Pole Mounted Vacuum Circuit Breaker 22-27kV

1.1 Ambient air temperature:-40℃-+45℃，daily average temperature not over 25℃

1.2 Air relative humidity:daily average not over 95%,month average not over 90%

1.3 Altitude:not over than 3000m

1.4 Wind speed:not over 34m/s (wind pressure700Pa)

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Application environment conditions

Model Description

Main technical data

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1.1 Ambient air temperature:-40℃- 45℃，daily average temperature not over 25℃

1.2 Air relative humidity:daily average not over 95%,month average not over 90%

1.3 Altitude:not over than 3000m

1.4 Wind speed:not over 34m/s (wind pressure700Pa)

1.5 Pollution level:not over than GB/T 5582-1993 class Ⅳ

1.6 Install:outdoor,No inflammable, explosive, chemical corrosion and place of violent vibration.

Table 1 Circuit Breaker Main Technical Data

No	ITEM				Unit	Data
1	Rated voltage				kV	24
2	Rated current				A	630	1250
3	Rated frequency				Hz	50/60
4	Rated insulation level	1min power frequency withstand voltage	Dry（inter phase/to earth/break）		kV	65/79 34
			Wet（inter phase/to earth/break）			50/65
			The secondary loop over the ground			2
		Lightning impulse withstand voltage(To earth/break)				125/145
5	Rated short-circuit breaking current				kA	20	25
6	Rated short-circuit making current（peak）				kA	50	63
7	Rated short-time withstand current				kA	20	25
8	Rated peak withstand current				kA	50	63
9	Rated short-circuit breaking times				times	20
10	Rated short-circuit duration time				s	4
11	The rated operating voltage and the rated voltage of auxiliary circuit				V	DC220、AC220
12	Rated operation order					open-0.3s-close/open-180s-close/open
13	Overcurrent trip rated current				A	5
14	Mechanical life				times	10000
15	weight			Without isolator knife	kg	115
				With isolator knife		138

Table 2 Operation mechanism technical data

No	ITEM	UNIT	DATA
1	Energy storage motor rated power	W	≤70
2	Closing energy storage time	s	≤8
3	Store the working voltage of the machine	V	AC220 AC110
3	Store the working voltage of the machine	V	DC24 DC110 DC220
4	The closing coil tripping voltage	V	AC220 AC110
4	The closing coil tripping voltage	V	DC24 DC110 DC220
5	brake coil voltage tripping	V	AC220 AC110
5	brake coil voltage tripping	V	DC24 DC110 DC220
6	Overcurrent tripping current coil	A	5

Table 3 Circuit Breaker Mechanical characteristics adjustment data

No	ITEM	UNIT	DATA
1	Contact distance	mm	12±1
2	Overtravel		3±1
3	Phases center distance		380±1.5
4	Three phase open, closing not synchronism	ms	≤2
5	Contact closing bounce time		≤2
6	Closing time		25～80
7	Breaking time		20～50
8	Average breaking time	m/s	1.1～1.7
9	Average closing time	m/s	0.5~0.9
10	Main circuit resistance	μΩ	≤100

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