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This instrument provides two shutdown modes:

timed shutdown: when the timing reaches the set time, the instrument will stop automatically.

manual shutdown: click the "shutdown" key to stop the machine. The two

shutdown modes are normal shutdown.

there are also two kinds of abnormal shutdown: over-voltage protection shutdown and over-

current protection shutdown.

overvoltage protection shutdown

In the process of test, when the output high pressure exceeds the set limit, the instrument will
automatically cut off the output after starting and shutting down the command, and then execute
the data history saving. After shutting down, as shown in Figure 12, the prompt message in the
status bar is "over voltage protection" and execute the data history saving.

Fig. 12 controller prompts over voltage protection

over current protection shutdown

In the process of test, when the output current exceeds the set limit, the instrument will
automatically cut off the output after starting and stopping the command, and then

Summary of Contents for VLF Hipot

Page 1: ...VLF Hipot Tester Huazheng Electric Manufacturing Baoding Co Ltd...

Page 2: ...lease read the instruction manual carefully and keep it for reference this product is a test instrument for high voltage electrical equipment Please operate according to the operation instructions and...

Page 3: ...gy 2 III technical parameters of series products 3 IV Product features 4 V Instrument structure and function description 5 VI Power cable withstand voltage test method 15 VII Transportation and preser...

Page 4: ...mings of domestic similar products see table 1 and its cost performance is much higher than that of similar imported products It is especially suitable for withstand voltage test of electrical equipme...

Page 5: ...m Commission has formulated the industry standard of ultra low frequency 0 1Hz withstand voltage test method for 35kV and below XLPE insulated power cables In 2004 the industry standard DL T 849 4 200...

Page 6: ...5 5 F 80kV 0 1Hz 1 1 F 80KV 0 5 20A Controller 4Kg 0 05Hz 2 2 F Peak Value booster 50Kg 0 02Hz 5 5 F Compare content Power frequency withstand voltage Frequency withstand voltage 0 1Hz withstand volt...

Page 7: ...se earth capacity of different types of generators Steam turbine generator Hydro generator Capacity MW 200 300 600 85 125 150 300 400 Single phase ground capacitance uF 0 198 0 18 0 26 0 31 0 34 0 69...

Page 8: ...automatic storage automatic printing Large test range 0 1Hz 0 05Hz and 0 02hz multi frequency selection largetest range Small volume and light weight it is very convenient for outdoor operation Upper...

Page 9: ...ed to communicate with the upper computer Stop for emergency stop test 2 Structure diagram of booster Figure 2 Schematic diagram of booster structure Operation instructions 1 Ultra low frequency outpu...

Page 10: ...After the microcomputer is powered on or reset the instrument will automatically enter the interface as shown in Figure 4 When connecting wires removing wires or temporarily not using the instrument t...

Page 11: ...ge limit it will no longer boost voltage and maintain constant amplitude sine wave output at this peak value Set voltage limit the setting range of voltage protection value is from 0 to rated value an...

Page 12: ...not connected in the status bar of Figure 6 indicates that the booster or capacitive test sample is not connected Figure 6 the controller indicates that the load is not connected 2 Boosting process A...

Page 13: ...ut Figure 8 constant amplitude output of controller prompt 4 Downtime When the timing reaches the set time the instrument will stop automatically as shown in Figure 9 and the prompt message in the sta...

Page 14: ...own as shown in Figure 11 the prompt message in the status bar is test passed and the data history is saved Note during the test if there is no abnormal voltage no discharge or overcurrent protection...

Page 15: ...ess of test when the output high pressure exceeds the set limit the instrument will automatically cut off the output after starting and shutting down the command and then execute the data history savi...

Page 16: ...nt key in Figure 3 to print the data on the display into a test report Under the status of viewing historical data click the print key to print the historical data currently displayed on the screen 5...

Page 17: ...to open the setting interface in Figure 15 which is used to set the date and time of the system 3 Upper computer background management software This instrument is equipped with VLF super low frequenc...

Page 18: ...e setting value of 0 1Hz ultra low frequency test voltage of various rubber and plastic insulated power cables Table 4 0 1Hz ultra low frequency test voltage and time of various rubber plastic insulat...

Page 19: ...ltage unit kV Example 2 a 10KV UN 10kV uo 8 7kv cable is 4km long with a single phase to ground capacitance of 0 21uf km and 0 1Hz super If the low frequency test voltage is 26kv peak value the leakag...

Page 20: ...quired to turn on and power on once a month about two hours to make the moisture emission and protect the components 4 anti exposure When the instrument is used outdoors direct sunlight exposure shall...

Page 21: ...ke the printing paper stretch out from the paper outlet put it in the middle position and let the rubber shaft fully press the printing paper otherwise it can t be printed When the thermal printer is...

Page 22: ...19 X Packing List No Name Qty 1 Controller 1 2 Booster 1 3 HV Cable 2 4 LV Cable 1 5 Power Cable 1 6 Discharge Rod 1 7 Grounding Wire 1 8 Capacitor 1 9 Fuse 4 10 Print Paper 2...

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