MEWOI MEWOI1500D Manual Download Page 18

 

 

-14- 

 

  4. Test LV current 

 

High  voltage,  very  dangerous

Only 

personnel 

after 

training 

can 

conduct 

operation  on  it.  The  operator  should  bear 
safety  regulations  in  mind;  otherwise  there 
can be the danger of electric shock resulting 
in personal injury or casualty. 
Testing  the  LV  current  by  the  HV  detector 
available 
Testing the 4 circuit    currents or leakers by 
the HV detector available 
It is prohibited to insert LV current clamp for 
an accurate measurement.   
It  is  prohibited  to  use  low  voltage  current 
clamps  to  detect  high  voltage  wire  above 
600V  or  10A;  otherwise  there  can  be  the 
danger  of  electric  shock  resulting  in 
personal injury or casualty. 

1)

 Connect three LV current clamps to the corresponding principal 

machines, power on the machine into the test mode. 

2)

  Vise  the  measured  wires  with  the  LV  current  clamp  (Note:  the 

clip should be fully closed), observe the readings of the secondary 

current, if the machine displays 

the symbol “OL A” while detecting 

the secondary current, it is indicated that the measured secondary 

current overflows the preset maximum of the LV clamp in the tester, 

it  is  recommended  to  use  the  HV  detector  for  its  measurements. 

The  tester  is  capable  of  detecting  three-channel  or  four-channel 

current /leaker, please operate based on actual requirements. 

 

Summary of Contents for MEWOI1500D

Page 1: ...MEWOI1500D THREE CHANNEL WIRELESS HV CT RATIO TESTER WWW MEWOI COM...

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Page 3: ...8 V OPERATIONS 9 1 POWER ON OFF OF HV DETECTOR 9 2 POWER ON OFF OF PRINCIPAL MACHINE 10 3 TEST OF HV CURRENT 11 4 TEST LV CURRENT 14 5 TEST OF CT RATIO POLARITY 16 6 DETECTION ON PHASE SEQUENCE 20 7 A...

Page 4: ...12 DATA UPLOAD 22 VI SETTINGS 22 1 SET CT RATIO 23 2 SET ERROR 23 3 SET TIME 24 4 SET BACKLIGHT 24 VII BATTERY REPLACEMENT 24 VIII ACCESSORIES 25...

Page 5: ...en using this tester in any cases especially in which the voltage circuit bears the voltage of AC100V or more The tester shall be applied connecting insulating rod with the hand holding on the fifth r...

Page 6: ...hall be used to gently rub down the tester Stop using and mothball then leave it to authorized organization for handling in case that continuing use can cause safety hazard due to the performance of t...

Page 7: ...munication link etc it adopts the wireless transmission signal that is capable of penetrating wall obstacles with a direct line transmission distance of about 30m MEWOI1500D tester is widely applicabl...

Page 8: ...ity moisture proof strong shock resistance bending resistance high insulation high flexibility and so on Monitoring Software Functions such as real time monitoring historical data search accessing bro...

Page 9: ...se sequence and leaker in the three channel high low voltage current transformer and the voltage transformers Power supply HV Detector DC6V alkaline batteries 1 5V AAA 4 Principal machine DC6V alkalin...

Page 10: ...ange of Ratio error 0 0 9 9 the principal machine can sound a alarm of beep beep beep if the measured value is more than the preset error Phase polarity Symbol indicated for in phase positive polarity...

Page 11: ...A displayed Zero signal indication The symbol is shown if the principal machine can t receive the signal from the HV detector Backlight Control Available ON OFF means to open close the backlight Alarm...

Page 12: ...size Outer diameter 32mm inner diameter 24mm 1m piece 5 pieces Lead length of LV current clamp 2 m Piece Dielectric strength AC100kV rms between HV detector cover and the 5 th insulating rod the AC10...

Page 13: ...rations Check if any damage exists for each part before operating the tester it can be put into use only after being qualified Install the battery according to the requirements set forth in the manual...

Page 14: ...respectively and the data measured by LV current clamps of CT1 CT2 and CT3 can be displayed on the position of R S and T on screen respectively the LCD can display the symbol if the principal machine...

Page 15: ...sualty Only when all of the five insulating bars are connected can the high voltage line be detected otherwise there may be the danger of electric shock resulting in personal injury or casualty Danger...

Page 16: ...nd can be shown on R phase If the principal machine shows that the primary circuit current value is OL it is indicated that the primary circuit current exceeds the upper limit of the high voltage dete...

Page 17: ...13 Notice please take the instrument away from the wire after the detection is finished for a safe operation It is available to measure HA current leaker by the tester...

Page 18: ...e 600V or 10A otherwise there can be the danger of electric shock resulting in personal injury or casualty 1 Connect three LV current clamps to the corresponding principal machines power on the machin...

Page 19: ...15 3 Reference Diagram Recording the circuit current monitoring leakers from equipment Detecting cable leakers in wall Detecting leaker from grounding wire...

Page 20: ...ption of battery 5 Test of CT ratio polarity 1st the current detected by single channel HV detector the primary current for CT 2nd the current collected by three channel LV current clamp the secondary...

Page 21: ...benchmark of secondary current in the range from 0 00A to 99 99A CT ratio of transformation based on benchmark of 10kV YY the HV detector collects the secondary current from the busbar 380V of transf...

Page 22: ...row key from the CT ratio display mode to the error test mode For example The pretest current transformer is a low voltage terminal CT of 10kV 380V transformer which primary current is 151 5A and whic...

Page 23: ...ratio display mode and press the MEM key and the Down arrow key to set the basic value for transformation of secondary current while calculate the CT ratio on basis of the new basic value The default...

Page 24: ...25 more than the T phase otherwise it is negative The cursor rotates clockwise on LCD under the positive phase sequence and rotates counterclockwise under negative phase sequence as shown in the figu...

Page 25: ...n is completed The tester can save up to 1 500 sets of data if the memory is full the symbol Full is shown it is necessary to clear the memory for the more storage 10 Data search Press the MEM key to...

Page 26: ...and run the monitoring software if the software displays the serial port is open and connected it is available to access the historical data which can be uploaded to the computer and saved under the...

Page 27: ...he error by the above preset its setting range is from 0000 to 9999 0 0 9 99A Press the Left or Right arrow key to move the cursor press the Up or Down arrow key continuously or interruptedly to chang...

Page 28: ...or interruptedly to change the setting range move the cursor to the OK or Cancel position and press the MEM key to return the previous menu 4 Set backlight Press the Left or Right arrow key to move th...

Page 29: ...ied batteries Paying special attention to the specification and electrode of new batteries close the battery cover tighten the two new screws 3 Press the POWER key to check if the instrument starts up...

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Page 32: ...Your Testing Specialist...

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