TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Web:www.grewin-tech.com Wh86-13072088960
Email:[email protected]
Address:DongLi Distr Tianjin City, China
Tel:
+86-22-84943756
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2.4.11 Cursor movement operation (touch operation)
Use the stylus to press the cursor, drag the cursor to suitable position. Or double click the target position by stylus, the dotted cursor will move this
position.
Or use touch screen to roughly position. And then pinpointing by the multiple button.
2.4.12 Data setting
Date is the retrieval tag of stored waveform, so it’s important to make sure the device time is correct. If there’s error,it’s needed to set again. Steps
as below:
Choose Operate
—
System setting to set the data in the pop-up window. Refer Fig.2.12
2.4.13 fault distinguish and work mode selection.
Before distance locating, we should first judge the cable fault to choose the suitable detecting method, steps as below:
Use tramegger to measure the insulation resistance of each phase -earth and phase-phase of cable terminal. If the tested result is 0, to use the
multimeter to test resistance again. If the tested result is very high, reach normal insulation level, check whether cable is break by method: short
circuit three phase and short circuit to the earth in one end of cable, then test in another end of cable to distinguish whether it’s break.
Fault tyoe and the distinguish method as below
No
Cable Fault
Representation
Testing method
1
Low resistance
/short circuit fault
Tramegger value
：
0
Multimeter value
：＜
200
Ω
Low Voltage Impulse
2
Break fault
Conductor disconnection
Low Voltage Impulse
3
High resistance
fault
Tramegger
：
0
Or:
Tramegger
：
0
Multimeter
：≥
200
Ω
Impulse current
4
Flashover fault
Tramegger: insulation normal
Withstand voltage test:no
Adopt different testing methods, different testing connection lines are needed.
The work mode of generator also need to adjust, our HVSG-500GX device could recognize different signal sources and automatically adjust the
working mode.
During different working mode, the operation menu has different function, in the following chapters, we'll give a detailed introduction.
2.4.14 Touch screen calibration
During the usage,if find touch position is not accuracy, it is needed to do screen calibration. Click Operate
—
screen correction ,refer below
Fig.2.13