Free sample for Cheap Cloth Cutting Machine - Vacuum Chamber TJC20-7.2/400 – Guoguang Electric

No.

MAIN TECHNICAL DATA

Unit

1

Rated Voltage

kV

7.2

2

Lightning Impulse Withstand Voltage (Peak)

kV

60

3

Short-time (1min) Power-frequency Withstand Voltage

kV

32

4

Rated Frequency

Hz

50/60

5

Rated Current

A

400

6

Rated Short-time Withstand Current

kA

4

7

Rated duration of Short-circuit

s

4

8

Rated Breaking Current

A

4000

9

Limiting Breaking Current

kA

10

Rated Making Current

kA

10

11

Rated Operating Frequency

AC-3

Operations/h

AC-4

300

12

Short-time Operating Frequency

Operations/h

13

Utilization Category

AC

14

Electrical Endurance

AC-3

Operations

2.5*10⁵

AC-4

10*10⁴

15

Mechanical Endurance

Operations

16

Clearance Between Open Contacts

mm

4 ~ 5.5

17

Contact Closing Force Due to Bellows and Atmosphere

N

70+ -10

18

Counter force of Contacts at Full Stroke

N

90+ -10

19

Circuit Resistance at Min. Rated Contact Force

μΩ

<= 160

20

Contact Limit Erosion

mm

1.5

21

Mass of Moving Parts

kg

0.42

22

Internal Gas Pressure

Pa

<=1.33*10^-3

23

Shelf Life

Year

20