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DIELECTRIC STRENGTH TESTER

FOR ISOLATING OILS

OT-60

( Código: P60311 )

INSTRUCTION MANUAL

( M98112801-03 / 04B )

(c)

CIRCUTOR S.A.

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Содержание OT-60

Страница 1: ...DIELECTRIC STRENGTH TESTER FOR ISOLATING OILS OT 60 Código P60311 INSTRUCTION MANUAL M98112801 03 04B c CIRCUTOR S A ...

Страница 2: ... to guarantee a proper operation of all the functions of the OT 60 and keep its safety conditions Also you must follow the usual security actions 1 3 Considerations related to the standards All the comments and advices that you can read on this manual related to the procedure that you must follow to do dielectric strength tests are referred to the IEC 156 standard being only valid if you are follo...

Страница 3: ...t cell The delivered gauge is 2 5 mm 0 05 mm in width according to the IEC 156 standard If you need other widths go to 10th point 2 3 OT 60 equipment Once extracted the test cell we will see the following image Sometimes we can find the keys inside the bag specified on point 2 2 2 4 Connection cable It s a standard connection cable ...

Страница 4: ...s of nominal viscosity of up to 350 mm2 s at 40ºC according to IEC 156 standard The OT 60 is supplied with a complete series of protectors making it highly protected and reliable It is easy to handle all buttons or illuminated switches are on the front control panel there is also an audible signal each time a key is pressed or when the oil sample is perforated The test cell is especially designed ...

Страница 5: ...4 DESCRIPTION OF THE CONTROLS Next we can see a representation of the controls of the equipment and the description of its functions STOP PAUSE 2 3 4 5 6 7 9 8 1 ...

Страница 6: ...nds we can resume the cycle returning to make use of this button 5 STOP Stop button This is lit when the stop function is started 6 ALARM Light indicating any type of anomaly 7 LIGHT Switch for the fluorescent light inside the chamber 8 RAMPS Ramp selector buttons These are lit when pressed and only one ramp may be selected Another ramp may only be selected when the equipment is on STOP 9 STIRRER ...

Страница 7: ... habitual use is very important that the option of FRAGILE TRANSPORT is used 5 2 Earth connection Connect the earthing screw on the rear panel to the general earth of the installation The conductor used for this purpose must not be less than 2 5 mm in diameter 5 3 Power supply connection Connect the power supply cable to the base of the rear panel and to the socket Ensure that the start key is on ...

Страница 8: ...ce between electrodes we will use the gauge delivered with the equipment The gauge must be placed between the electrodes and the distance between them will be corrected relaxing its subjection by means of provided Allen spanner Later it will be necessary to tighten to maintain the required distance Remarks The supplied gauge follows the IEC 156 standard This Standard specifies that the gauge must ...

Страница 9: ...iners will be washed finally with acetone and the rests of this dissolvent will be eliminated by means of hot air blown After the cleaning the containers must be closed immediately and stay closed until the moment of their use 6 2 Preparation of the sample to test According to the IEC 156 standard it will be necessary to adopt the following indications The test will be done if another thing is not...

Страница 10: ... multiply by 4 1 0 25 4 the value shown on the display we obtain the dielectric strength value of the oil kV cm 7 1 Positioning the test cell in the chamber Open the door of the equipment and place the test cell filled with the sample of oil inside the chamber introducing the contacts in the holes on the bottom of it sockets of the high voltage transformer Press firmly until the pieces fit This is...

Страница 11: ...ng the door Close the door since if it is not closed the protection circuit will prevent the operation of the equipment Once we have done all the steps specified before the equipment is already prepared for a correct use 7 4 Enabling by means of key Turn the key to the I position start The equipment will starts doing a test that turns on the light of all the buttons indicating that are running rig...

Страница 12: ...ing on the indications of the oil manufacturer 5kV s 3kV s 2kV s o 0 5kV s 2 kV s is selected according to IEC 156 standard b The stirrer function It consists on the agitation of the oil sample during 60 seconds and a waiting time of other 60 seconds before the ramp starts c The presence of light inside the chamber The light allows us to see the test in a clearer way ...

Страница 13: ...il the equipment reaches 60 kV Then the cycle will stop and the STOP light comes on If during the increasing voltage ramp the oil sample is perforated then the display will retain the voltage at which the perforation occurred the ARCH light is lit and an alarm goes off cutting the high voltage The ARCH light remains on until the STOP button is pressed Once the STOP button is pressed the value on t...

Страница 14: ...ortune measures to diminish the degree of contamination of the oil If you are not able to find another value an habitually used criterion but not indicated by the standard is to consider as good the oils that have an average value of dielectric strenght higher than 80 kV cm remember that we can obtain the dielectric strenght multiplying the disruptive voltage by 4 in the case of following the IEC ...

Страница 15: ...th your manager of remainders 10 TECHNICAL FEATURES SUPPLY VOLTAGE 230V 50Hz TEST VOLTAGE SENOIDAL 0 60 kV 50Hz CONSUMPTION 100 W 1200 W MEASUREMENT TOLERANCE 2 RESPONSE TIME AFTER DISCONNECTION 20 ms TEST STANDARDS IEC 156 Other types of electrodes and gauges for other standards can be supplied on request ASTM 877 ASTM 1816 etc OPERATING TEMPERATURE 15 25 C STORAGE TEMPERATURE 0 60 C OUTSIDE MEAS...

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