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Products features 
1、test 12 contacts’s opening time and closing time
2、test reclosing time
3、test opening_simultaniety and closing_simultaniety
4、test speed at instant of contacts touching (separating)
5、test springing time and springing magnitude
6、test clearance between open contacts/gaps and overtravel between them(except in
testing the vacuum switches, for the user has to set the clearance to the instrument
beforehand) .
7、test open (close) average speed
8、display and print the speed-distance curve

Products parameters
1、time measurement
number of contact(s) to be measured :≤12
range of the set time during the measuring course : 0 to 6 seconds
resolution:0.1ms
2、test of clearance between two open contacts, overtravel, springing magnitude
range: <1000mm
resolution:1mm
3、error of measure
error of time measured : ±1%
error of clearance measured : ±1%
4、operating conditions
power supply: AC220V±10%
frequency: 50HZ/60HZ
power cost: ≤60W
temperature of using environment: 0~40℃
humidity of using environment: ≤90%RH
size: 400mm*350mm*200mm
weight: 7kg