Related Manuals for Clinton IT-25B
Summary of Contents for Clinton IT-25B
- Page 1 Model IT-25B Instruction Manual Clinton Instrument Company 295 East Main Street Clinton, CT 06413 USA Telephone: 860.669.7548 Fax: 860.669.3825 www.clintoninstrument.com...
- Page 2 Rev D 6/15...
- Page 3 NEMA specifications > >Process control output IT-25B Control Unit he IT-25B Impulse Spark Tester is designed to comply with the rigorous test requirements of Mili- tary Specifications MIL-C-13777E, MIL-W-16878, and NEMA Standards for hook-up wire used in high tem- perature wire applications. This method is favored as an alternate to wet dielectric test.
- Page 4 New Weight: Cabinet ....18.5 lbs. (8.5 kgs.) register a fault; 500 kilohms, min. Electrode .....8 lbs. (3.6 kgs.) 295 East Main St. • Clinton, CT 06413 USA • Tel: 860.669.7548 • Fax: 860.669.3825 • www.clintoninstrument.com Specifications subject to change without notice. 06/15 EN...
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Page 5: Table Of Contents
Table of Contents Safety ............................1 Electrical Shock Hazard From Production Line Spark Testers ..........3 Installation ..........................4 Spark Tester Controls ......................7 Operation ..........................9 Calibration ..........................11 Maintenance .......................... 15 Troubleshooting ........................16 Replacement Parts ........................ 17 “Grounding of Conductors During the Spark Test”... -
Page 7: Safety
Caution - risk of electric shock symbol. Earth (ground) symbol. Environmental Conditions The Model IT-25B Impulse Spark Tester is designed to be safe under the following conditions: • Indoor use. • Altitude to 2000 m. - Page 8 The danger is greater when a customer does not ground the inner conductors of a test product. While Clinton cautions its cus- tomers to ground the test product for safety reasons, many times this warning is ignored.
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Page 9: Electrical Shock Hazard From Production Line Spark Testers
Capacitor discharge energy of 50 Joules (watt–seconds) is regarded as hazardous. Clinton DC spark testers are current limited to 5 milliamperes or less. Three kiloHertz spark testers are limited to 4 milliamperes or less, and 60 Hz. types to 7 milliamperes. Impulse spark testers can deliver a maxi- mum charge of about .2 Joules 248 times per second. -
Page 10: Installation
The rating of the circuit breaker or fuse should be no greater than 5 amperes. CAUTION: Be sure the external disconnecting device is OFF and locked out before continuing. Mount the Spark Tester: Mount the IT-25B control unit in place near the electrode. The electrode Page 4 - IT-25B Instruction Manual... - Page 11 HV CONTIN and GND and remove any jumper between RESET and GND. • Mode B (Rewinder Use: Stop on Fault, Remove High Voltage, Manual Reset): Place a jumper between RESET and GND and remove any jumper between HV CONTIN and GND. 8. Replace the equipment cover. IT-25B Instruction Manual - Page 5...
- Page 12 Double Check Your Connections Double check all connections. Plug the power cord(s) from your spark tester into your power source. Page 6 - IT-25B Instruction Manual...
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Page 13: Spark Tester Controls
0-25kV, the voltage of the spark tester is indicated on the upper scale. VOLTAGE ADJUST control. To adjust the voltage of the IT-25B, select the proper voltage range using the Range Switch and turn the Voltage Adjust control to the desired volt- age. NOTE: The IT-25B does not operate below 3kV. - Page 14 Metal end guards on each end of the high voltage test module prevent the operator from reaching into the energized electrode. The test prod- uct should be centered in the electrode to avoid damage to the product. Page 8 - IT-25B Instruction Manual...
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Page 15: Operation
NOTE: In order to avoid spurious fault counts during normal operation, voltage levels less that 3kV should not be used. Military specifications generally do not permit voltage test below 5kV peak. The IT-25B was designed to operate and to meet military specifications between 5 - 25 kV. • Mode A (Extruder Use: Continuous Voltage, Automatic Reset): 1. Thread your product through the bead chain electrode. Be sure the wire is centered in the electrode. - Page 16 NOTE: It is normal for the IT-25B to trigger during the initial turn-on period and while the voltage is being adjusted to a level above 3kV. Press the RESET and clear the counter to ready the tester for operation.
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Page 17: Calibration
Model IT-25B Impulse Spark Tester Calibration The IT-25B spark tester may be reasonably expected to retain its accu- racy for a period of one year from the date of calibration under condi- tions of normal use. CAUTION: The calibration procedures listed below are to be performed by qualified service personnel experienced in high voltage safety proce- dures only. - Page 18 Negative Peak Adaptor to equipment ground. 3. Set the EVM to the 20kV range and zero the meter. 4. Set the IT-25B range switch to the 15kV range. Zero the IT-25B voltmeter. 5. Turn ON the spark tester. It will immediately show a fault.
- Page 19 Adaptor and push the RESET button on the IT-25B. Both the meter on the spark tester and the EVM will indicate voltage. 13. Still holding in the PRESS TO READ button, turn the IT-25B voltage up slowly until the EVM reads 14.93kV. (NOTE: the Negative Peak Adaptor causes the EVM to read 70 voltage LESS than the actual actual voltage.) Use the reading obtained...
- Page 20 Model IT-25B Impulse Spark Tester 3. Set the IT-25B range switch to the 15kV range. Zero the IT-25B voltmeter. 4. Turn ON the spark tester. It will immediately show a fault. 5. Push the RESET button on the IT-25B. Both the meter on the spark tester and the oscilloscope will indicate voltage.
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Page 21: Maintenance
The red electrode mounting plate, clear cover, and bead chain assemblies are subject to damage and contamination that is not always visible. They should be replaced if current leakage occurs. Refer to the “Troubleshooting” section for assistance with electrical problems. IT-25B Instruction Manual - Page 15... -
Page 22: Troubleshooting
Failure to follow the procedures in this manual may result in danger to personnel and equipment damage. The spark tester controls are ON but the equipment does not function. The circuit breaker on the rear of the control unit may have tripped. Page 16 - IT-25B Instruction Manual... -
Page 23: Replacement Parts
Note: Printed circuit boards are carefully constructed and calibrated at the factory. Components are not supplied for field repair of boards. Please return faulty circuit boards to the factory or to your Clinton sales representative for quick and inexpensive repair and calibration. Part Number... -
Page 24: Grounding Of Conductors During The Spark Test
If the spark tester oper ates at the the test po ten tial. If the op era tor ac ci den tally comes into con tact Reprinted from March 1986 Issue of Wire Journal Page 18 - IT-25B Instruction Manual... - Page 25 Model IT-25B Impulse Spark Tester IT-25B Instruction Manual - Page 19...
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Page 26: Warranty
Model IT-25B Impulse Spark Tester Warranty The information contained in this document is subject to change with- out notice. The Clinton Instrument Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties or merchantability and fitness for a particular purpose. -
Page 27: Electrical Shock Considerations For Electric Vehicle Charging Systems
Model IT-25B Impulse Spark Tester Electric Shock Considerations for Electric Vehicle Charging Systems By Walter Skuggevig, Research Department, Melville, reprinted courtesy of Underwriters Laboratories Inc. This technical paper was presented in December 1993 at the National Conference on Electric Vehicle Infra- structure, sponsored by the Electric Power Research Institute, Arizona Public Service, Salt River Project, and the Electric Vehicle Association of the Americas. - Page 28 Model IT-25B Impulse Spark Tester so on. Leakage current measuring instruments, such as those specified in ANSI C101-1992, take into account the effect of high frequencies on the body. These instruments produce readings that are “frequency- weighted,” and indicate the level of possible physiological effect. The readings correspond to the current magnitude in mA only at low fre- quencies such as 60 Hz.
- Page 29 Model IT-25B Impulse Spark Tester tion exposures to combinations of AC and DC, the parameter of cur- rent that is most related to the threshold of ventricular fibrillation is the peak-to-peak value of the current, if the DC component is low enough so that there is reversal of the current each cycle. In fact, as long as the current reverses, the presence of a DC component is not significant with regard to the ventricular fibrillation threshold. If the DC component...
- Page 30 Model IT-25B Impulse Spark Tester Double Insulation Double insulation enhances the reliability of the electrical insu- lation of a product to reduce the likelihood of insulation breakdown that could cause an electric shock. Each part of a double-insulation system should be independent and must be fully capable of acting as the sole insulation.
- Page 31 Model IT-25B Impulse Spark Tester Shielding Shielding can be used to limit voltages that can appear on acces- sible conductive parts during fault conditions when products generate high voltages internally. A properly connected shield will prevent voltage on the accessible conductive parts from exceeding line voltage during fault conditions.
- Page 32 Model IT-25B Impulse Spark Tester installation of electrical products, but product safety standards cover the details and complexities of the design and construction of the various products, including which protective mechanisms or combinations of protective mechanisms are considered satisfactory to meet the need for protection against electric shock.
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