7
Figure 4
The operation interface is also divided into three areas: the fracture status display area in the upper
part, the parameter setting area in the middle part, and the page turning button area in the lower part. The
functions of the upper and lower areas are similar to the mode selection interface and will not be
described again. It mainly introduces the selection and setting of each parameter in the central parameter
setting area.
♦ Switch type: Some models of this machine support the selection of combined resistance contact
and metal contact mode. The default is metal contact.
♦ Trigger mode: The trigger mode is divided into two working modes: internal trigger and external
trigger. The internal trigger mode is to use the internal DC power of the instrument to drive the on / off coil
of the device under test. In the external trigger mode, the internal DC source of the instrument does not
work, but the on / off coil of the device under test is driven by the on-site power. The external
voltage action signal is used as the timing starting point. This parameter can only be selected in "Auto
test", "Open test" and "Close test" modes, and the default is "Internal trigger" in other modes.
♦ Speed definition: This parameter is used to define the calculation rules of rigid opening / closing speed
to meet the different requirements of different switch manufacturers and models. This
machine has built-in 10 common speed definition modes and a custom mode that can be
saved in case of power failure. If the above method still can't find a satisfactory speed
