Oil Testing Kit

Product Details:

INSULATING OIL TESTER : OTS-E series [SEMI- AUTOMATIC]

Introduction:
UDEY insulating oil testers are market standards since 1960 and several thousand of units are inuse around the world. Series ‘OTS-E’ are semi automatic compact and portable testers giving smooth variable outputs of 60, 80 and 100kV for testing dielectric of insulating oils used inelectrical equipments. Stirrer is provided to stir oil for 60 seconds. Timer of 60 seconds is provided for conducting withstand tests.

Features:·

• Digital display of kV
• Motorized rise of test voltage: 2kV per second as recommended by IS:6792/IEC 156
• Set voltage facility
• Automatic start-stop of stirring of oil for 60 seconds.
• Automatic start-stop and hold for with stand test for 60 seconds
• Audio + Visual alarms at breakdown
• Indicators for test status
• Light weight: 30 kg 60kV set

Safety features:·
Zero start high voltage output· HV area interlocked· Protection: a) Does not start if ‘Live, Neutral’ connected reversely.b) Does not start if ‘GROUND’ is open.· Audio visual alarms at breakdown

System description:
The system is semi-automatic. Test voltage is set on the digital display and test is started. The test voltage ramps to the set voltage level at 2kV per second [IS:6792/IEC 156/ etc]. In case insulation fails, the output test voltage is tripped and comes to zero. The stirrer starts to stir the oil for 60 seconds and stops automatically after 60 seconds. In case the insulation stands the setvalue, the test voltage remains for 60 seconds and automatically returns to zero. If during this period the insulation fails, the test voltage is tripped and output test voltage comes to zero.

Specifications:

• Model : OTS-E 6: 60kV OTS-E 8: 80kV; OTS-E 10: 100kV
• Standard : Meets requirements of I.S. 6792 (Latest amendment).
• Input Voltage : 240 Volts, 50 Hz, single phase AC supply.
• Output Voltage : Continuously variable voltage.
• H.T. Source : Heavy duty epoxy resin cast, dry, maintenance free transformer with mid point ground.
• Voltage rise : a) Motorized at 2 kV per second (± 20%).
• kV Meter : Digital kV meter. Accuracy: ± 4% as per IS 6792.
• Trip : Automatic cut-off in the event of oil breakdown.
• Controls : 
• Mains ON / OFF.
• Input fuse.
• H.T. ON & OFF push button switch.
• Set voltage control knob and digital display.
• Digital kV Meter continues to indicate after breakdown.

Safety & interlocks : 

• Does not start if ‘Live, Neutral’ connected reversely.
• Does not start if proper ‘GROUND’ is open.
• The transparent hood to H.T. Chamber has a interlock such that opening of hood shuts high voltage OFF . Also when this hood is open , H.T. cannot be switched ON.
• Zero interlock. Continuously variable auto-transformer is interlocked at its minimum & maximum position so that H.T. can be switched ‘ON’ only when it is in its minimum position. Interlock at maximum position switches off ‘HT’.
• Oil Test Cup : Oil test cup with adjustable 36 mm mushroom electrodes,to I.S. 6792 figure 2.
• Stirrer : Automatic [60 seconds].
• Timer : Automatic [60 seconds].
• Enclosure : Aluminum metal cabinet with cover and lifting handles.

 

Accessories supplied:

• 3 core mains cord cable, 2 meter long 1No.
• Oil test cup with adjustable electrodes 1No.
• ‘GO’ gauge for ‘2.5’ mm gap 1No.
• ‘NO GO’ gauge 1No.

Product Details:

Other Details:

• Confirms to IS 6792, IEC 156
• Tests insulating oils to IS, IEC, ASTM, etc
• Test voltage to 100kV
• Motorized rise of test voltage: 2kV/sec
• One piece construction with safety interlocked transparent hood covering test cell
• Test voltage can be held at any desired level
• kV meter continues to indicate breakdown voltage even after breakdown
• Light weight: 36 kg only
• Portable, rugged and with cover

Insulating Oil Testers are designed for the easy and accurate determination of the die-electric strength of insulating oils used intransformers, switchgears, bushings, capacitors and other electrical apparatus. They are ideal for on-site field and laboratory use. Safe and easy operation has made UDEY insulating oil testr

Operation:
All the controls and indicators are located on a top panel with clear and easy to understand legends. A kV meter indicates the value of the test voltage and following breakdown of the test sample, continues to indicate the breakdown voltage after the circuit breaker has tripped and removed the test voltage. Motor may be stopped and re-started as required so that it is possible to hold any test voltage desired (upto maximum) constant for a period of time. The circuit breaker ignores transient spark-overs in the oil sample.

Circuitry:
The mains is applied to a continuously variable toroidal auto transformer through a switch and fuse. The output of this variable auto-transformer is fed to the primary of the HV transformer. The secondary of the HV transformer has its midpoint connected to earth through a current transformer. The secondary of the current transformer is connected to a sensitiverelay. When the leakage current in the circuit exceeds a pre-setvalue, the relay operates, thereby tripping the supply to the primary of the HV transformer.

HV Transformer:
The HV transformer is a completely dry resin encapsulated transformer with two HV terminals with mounting saddles. The midpoint of the transformer HV winding is grounded so that the voltage of each terminal to earth is only half the test voltage.

Safety:
Maximum possible safety of the operator as well as the equipmentis ensured by a safety conscious design. The output controller is interlocked at its minimum position so that HV can be switched ON only when the voltage controller is at zero and the hood isshut. The output controller must be brought to zero after every testor interruption. The hood leading to HV terminals has a safety switch fitted so that opening of the hood shuts the HV OFF.

Test Cell model TC-2:
The test cell with cover is made of Methyle Methacrylate (Acrylic)having effective oil volume between 300 to 500 ml with adjustable and removable 36 mm mushroom head electrodes to IS 6792 & IEC 156 along with electrode gap distance GO & NOGO gauges, made of alloy steel, precision ground and hardened. Optional Test Cell with suitable electrode spacing gauges: 1.Type TC-1: Same as TC-2 but with 12.5 to 13 mm spherical electrodes. 2.Type TC-3: Same as TC-2 but with 1" dia flat disc electrodes to ASTM D 877.

Indicator Lamps:

• 3 in all as under
• Green: indicates main ON
• Yellow: indicates HV OFF
• Red: indicates HV ON

Standard Accessories:

• Mains cord, 2 meter long
• Test cell TC-2 with electrodes
• GO & NO-GO gauges
• Operating Manual

Product Details:

CU -series Fully Automatic Insulating Oil Testers. 

Introduction:
Insulating oil being an efficient cooling medium with high dielectric strength has been a recognized insulating mediumin electrical equipments. Degradation of oil takes place due to acids, oxidation, sludge, gas and water absorption. A dielectric strength test shows the changes caused in oil due to these processes. 'UDEY' CU Series testers arefully automatic micro-controller based testers completely self contained with built in printer. 'UDEY' insulating oil testers are the industry standard for over 50 years.

Features:

• Easy operation-Fully automatic test cycle along with average BDV display.
• Automatic change of sample number of test.
• Automatic calendar and time running even with power off.
• Recall and print last 99 test results stored for 100 years even with power off.
• Programmable: Number of tests, Settling time, stir time, and waiting time.
• LCD displays: Test status, HV rise, HV fall, BDV of previous test and test results.
• Tests to: IEC 156, IS 6792, JIS C2101, BS 5874, VDE 0370, GB-86 etc.
• Countdown display of time in ‘Settling, Stir, and Waiting’ modes.
• Built in printer.
• Zero start safety and test chamber access interlock.
• Ergonomic design, completely user friendly-just 36 kg in weight.

System description: The system is fully automatic and carries out tests according to the set or chosen menu like ‘Number of tests, Settling time, Stir time and Waiting time’. System time, setting of test parameters, status and data is displayed on LCD. Audio beep is given after the test is complete and the results can be printed on built-in printer. The test results can be recalled for view after the test. Further the last 99 test readings can also be recalled and printed.

Standard Accessories:

• Test cell type ‘TC-2’ 1 number.
• Mains cord 1 number.
• Paper roll 1 number.
• Spare fuses 2 numbers.
• Operating manual one number.