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TeraOhm 5kV

36

DISCHARGING
Every time after measurement completion.
Discharging resistance:..................................100 k

Ω

±

10 %

SERIAL COMMUNICATION
RS232 serial communication .........................galvanic separated
Baud rates:.....................................................2400, 4800, 9600, 19200 baud, 1 stop bit,
no

parity.

Connector: .....................................................standard RS232 9-pin D female.

CLOCK
Built-in Real time clock...................................Displayed permanently and stored as a

parameter in combination with the result.

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Содержание TeraOhm

Страница 1: ...TeraOhm 5 kV MI 2077 User Manual Version 1 4 Code No 20 750 722...

Страница 2: ...kV 2 Distributor Producer METREL d d Horjul 188 1354 Horjul Slovenia 2002 Metrel No part of this publication may be reproduced or utilized in any form or by any means without permission in writing fro...

Страница 3: ...ts 12 5 1 Generally about DC High voltage testing 12 5 2 Guard terminal 15 5 3 Filter option 16 5 4 Voltage measurement 18 5 5 Insulation Resistance measurement 18 5 6 Diagnostic test 20 5 7 Step Volt...

Страница 4: ...proportionately set within preset test voltage range Programmable timer 1min up to 30 min per step Polarization Index PI and Dielectric Discharge ratio PI RINS t2 RINS t1 DD Idis 1min C U Withstandin...

Страница 5: ...consists of a dot matrix LCD a rotary switch and a keypad see the figure below Fig 1 Front panel Legend 1 START key to start any measurement 2 ON OFF key to switch the instrument ON or OFF 3 MEM key...

Страница 6: ...and Mains supply cable connection to the mains socket 5 Fig 2 Connectors Legend 1 Positive Insulation Resistance test terminal 2 Negative Insulation Resistance test terminal 3 GUARD test terminal inte...

Страница 7: ...UNG NICHT AUFLADEN WENN ALKALZELLEN VERWENDET SIND STROMVERSORGUNG 6 1 2V IEC LR 14 oder NiCd NiMH AUFLADBAR 6 1 5V ALKALZELLEN IEC LR 14 Fig 3 Bottom section Legend 1 Nylon strap allows the operator...

Страница 8: ...on Only adequately trained and competent persons may operate the instrument BATTERIES Disconnect all test leads and switch the power off before opening the Battery cover Avoid connection to main suppl...

Страница 9: ...inishing the measurement Please wait discharging message will be displayed HANDLING WITH CAPACITIVE LOADS Note that 40 nF charged to 1 kV or 1 6 nF charged to 5 kV are hazardous live Never touch the m...

Страница 10: ...ew autocalibration is recommended when the temperature changes by more than 5 C Fig 4 First introduction Fig 5 Auto calibration state Note If the instrument detects incorrect state during the autocali...

Страница 11: ...ore sub parameters in one line e g date and time then use the SELECT key to skip to the next sub parameters and back To clear all memory locations 1 Select Memory Clear line using the and arrows 2 Pre...

Страница 12: ...ly applied for measurement tests of the insulation resistance The voltage in this type of test is defined by the appropriate product application group It is lower than the voltage for the withstanding...

Страница 13: ...m time required for the Ciso to be charged up Sometimes it is required to take into account the ambient temperature to adjust the result for a standard temperature of 40 C If surface leakage currents...

Страница 14: ...s greater than 5000 M then this measurement may not be valid new modern types of insulation Oiled paper used in transformers or motors is a typical insulation material that requires this test In gener...

Страница 15: ...0 m 4700 V IEC 60598 1 2120 V Humidity and insulation resistance measurements The quality of insulation resistance measurements outside the reference ambient conditions could be affected by humidity H...

Страница 16: ...current resulted by material conditions IA A meter current Result without using GUARD terminal RINS Ut IA Ut IM IL incorrect result Result using GUARD terminal RINS Ut IA Ut IM correct result It is re...

Страница 17: ...s are relatively narrow on high resistance insulation so the most important point is filtering of the measured current Note Any of the selected filter options increases the settling time with Fil1 to...

Страница 18: ...he measurement continuous measurement starts to run Press the START key again to stop the measurement The result see the right figure above can optionally be saved by pressing the MEM key twice see th...

Страница 19: ...sentation of result Rmax Maximum value of result only if timer is enabled Rmin Minimum value of result only if timer is enabled Notes If the timer is disabled then OFF is displayed instead of the time...

Страница 20: ...surement Initial display Display with results Fig 11 Diagnostic test display states This is a long duration test for evaluating the quality of the insulation material under test The results of this te...

Страница 21: ...ment and to the measured object Press the START key to start the measurement Wait until set timer runs out result is displayed Wait until the object under test has discharged The result see the right...

Страница 22: ...ly or changing the rotary switch position Last displayed settings are stored Fig 12 Set up menu in Diagnostic Test Legend of displayed symbols DIAGNOSTIC TEST Name of selected function SETTING PARAMET...

Страница 23: ...to full scale see the figure 15 This function shows the level of the measured Insulation Resistance versus the test voltage Measurement procedure Connect the test leads to the instrument and to the me...

Страница 24: ...t until the completion of each step measurement Timer information shows the complete measurement period after the completion of the measurement A high voltage warning symbol appears on the display dur...

Страница 25: ...step from the Start up to the Stop value over a predefined time and it is kept at the Stop value for a predefined test time see the figure below Ut Ut Ustop Ub Ustart Ustart Ustep 0 0 Tstep Tend t t...

Страница 26: ...AGE DC Name of selected function 1000V Start test voltage 2000V Stop test voltage 2053V Actual test voltage measured value I 0 04nA Actual test current measured value tm 01min 00s Timer information No...

Страница 27: ...adjustments pressing either the ESC key or START key to run the measurement directly or changing the rotary switch position The last displayed settings are stored Fig 19 Set up menu in Withstanding Vo...

Страница 28: ...lectable with or arrow keys To store result Select SAVE and confirm store operation by pressing the MEM key To recall stored result Select RCL and confirm recall operation by pressing the MEM key the...

Страница 29: ...test Function name Last measured insulation resistance Set test voltage Actual test voltage measured value Actual test current measured value Capacitance of tested object Complete duration of measure...

Страница 30: ...ltage measured value Ser number of stored result Date Time Note Date and time of storing the test result are transferred to PC while date and time of recalling are displayed when recalling results 6 2...

Страница 31: ...connected permanently Battery cells are stored in the bottom section of the instrument casing under the battery cover In case of defective battery please note the following All six cells have to be re...

Страница 32: ...ned with soapy water or spirit to clean the surface of the instrument and leave the instrument to dry totally before using it Notes Do not use liquids based on petrol or hydrocarbons Do not spill clea...

Страница 33: ...100 M 100 999 G 1 G 1 00 5 00 T 10 G Full scale value of insulation resistance is defined according the following equation RFS 1T Utest kV DC test voltage Voltage value Any value within 250 V and 5000...

Страница 34: ...racy 0 5500 1 V 3 of reading 40 V Leakage current Display range Itrigg mA Resolution Accuracy 0 1 4 1 A 3 of reading 3 digits Voltage Voltage AC or DC Display range External Voltage V Resolution Accur...

Страница 35: ...10 45 Hz 65 Hz 25 VA Optional on request 115V AC 6 10 45 Hz 65 Hz 25 VA Protection classification double insulation Over voltage category CAT III 600 V Pollution degree 2 Degree of protection IP 44 D...

Страница 36: ...ce 100 k 10 SERIAL COMMUNICATION RS232 serial communication galvanic separated Baud rates 2400 4800 9600 19200 baud 1 stop bit no parity Connector standard RS232 9 pin D female CLOCK Built in Real tim...

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