Related Manuals for Criterion AVC-25V
Summary of Contents for Criterion AVC-25V
- Page 1 Instruction Manual Model: AVC-25V Criterion Dielectric Strength Tester www.criterioninstr.com...
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Page 2: Table Of Contents
Table of Contents Introduction ....................3 Product Quality ..................... 3 Safety ......................3-4 Features ......................5 Included ......................5 Specifications ....................6 Instrument Description ................7 Installation Instructions ................8 Operating Instructions ................9-12 Guidelines ..................9-10 Initial Test .................... 10 Test Procedure ................... -
Page 3: Introduction
Introduction Thank you for purchasing your AVC-25V Dielectric Strength Tester. This high-voltage power supply is designed especially for measuring dielectric strength or breakdown (often called the "HIPOT" test) as required by many CSA and UL specifications for both qualification and production testing. - Page 4 • Wear appropriate personal protective equipment (PPE), including insulated gloves and safety goggles, when operating the tester to protect against potential hazards. • Do not use this equipment in hazardous environments where flammable gases, vapors, or dust are present unless the equipment is specifically designed and certified for such use.
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Page 5: Features
Features • For dielectric strength testing of electrical appliances, motors, radios and electronic devices • Cover more than 75% of the requirements for test voltages called up by CSA, HEPC and UL for breakdown testing • Input 120V, 60Hz rated at 500VA, suitable for equipment up to 75H.P. or 50kVA •... -
Page 6: Specifications
Specifications Input: 120V/60Hz Output: Adjustable 0 to 2500V AC at 95mA Transformer: Rated 500VA Voltmeter: 0 to 2500V AC Accuracy: +/- 2% of full scale Trip Current: Fixed at 95mA +/- 5% Indicators: 4 lights (power on, high-voltage-on, fault and line-fault) Control: One on/off switch, one fuse, one reset push-button, one high-voltage adjust knob... -
Page 7: Instrument Description
Instrument Description 1. Cabinet 8. RESET Button 2. VOLTAGE ADJUST Knob 9. FAULT Indicator Light 3. LINE FAULT Indicator Light 10. Voltmeter 4. POWER Indicator Light 11. High Voltage Warning Indicator Light 5. ON/OFF Switch 12. Ground Connection 6. Alligator Clip 13. -
Page 8: Installation Instructions
Installation Instructions The AVC-25V is supplied completely wired and ready for operation without special installation. Simply plug the line cord into any convenient 120-V AC line outlet. NOTE: A 3-wire U-ground outlet is necessary to ensure proper grounding of the instrument cabinet. This instrument incorporates a special ground sensor. -
Page 9: Operating Instructions
Operating Instructions Guidelines Before Testing Begins The relatively high voltages used in dielectric-strength testing pose significant dangers to life, necessitating utmost care in conducting such tests. The following precautions are considered minimal and, if adhered to, should ensure a reasonable level of safety: •... -
Page 10: Initial Test
• When testing capacitors or cables, ensure complete discharge at the conclusion of the test. Momentary shorting of terminals may not suffice, as dielectric absorption can cause voltage to reappear shortly after removing the short. To mitigate this, maintain the short for an extended period, such as ten seconds, before confirming complete discharge. -
Page 11: Test Procedure
Test Procedure 1. Ensure the power on the equipment under test is OFF before beginning. 2. Confirm the VOLTAGE ADJUST Knob is set to the zero-voltage position, (fully counter clockwise). 3. Connect all supply leads or terminals on the item under test according to the specifications for this test. - Page 12 10. If the leakage exceeds the set value of the trip current, the high voltage will immediately be turned off, and the LINE FAULT Indicator Light will illuminate. Otherwise, the item being tested is deemed "good". 11. Press the RESET button to turn OFF the LINE FAULT Indicator Light and turn on the high voltage if necessary.
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Page 13: Maintenance And Calibration
CSA or UL certification standards. It is strongly recommended that your test set undergo a thorough check of its operation and calibration at least once a year by Criterion Instruments or an authorized Criterion Instruments Service Centre. -
Page 14: Voltmeter Calibration
IMPORTANT: Do not replace the plastic screw in a retractable high- voltage probe with a metal screw under any circumstances! WARNING: Never substitute any part or component with one that is not specified by Criterion Instruments. -
Page 15: Fuse Replacement
Fuse Replacement The fuse used should be a type MDL-3A (or MDX-3A) with a SLO-BLO characteristic. Ordinary fuses must not be used. Avoid over fusing. If the fuse blows repeatedly without apparent cause, promptly return the instrument for repair as it may be faulty. WARNING: Always disconnect equipment from electrical power before removing a fuse;... -
Page 16: Appendix
Appendix The following brief notes aim to describe some characteristics of dielectric strength testing to help the operator better understand its significance. Specific test voltages or currents are typically outlined in testing specifications established by organizations like CSA or UL. What is dielectric strength? Dielectric strength refers to the voltage rating at which electrical failure or breakdown occurs. - Page 17 What is the relationship between dielectric strength, insulation resistance, and leakage current? Insulation resistance is typically measured with DC at a voltage much lower than the breakdown voltage. Its value depends on material characteristics and surface conditions such as dirt or moisture. The measured insulation resistance may vary with voltage and time, but not rapidly.
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Page 18: Product Warranty
Product Warranty Criterion Instruments guarantees this system to be free of defects in material or workmanship for a period of two (2) years from date of shipment. During the warranty period, Criterion Instruments will repair or replace, at no charge, products or parts of a product that proves to be defective because of improper material or workmanship, under normal use and maintenance. -
Page 19: Product Support
Product Support If you have any questions on your product, please contact your authorized Criterion Instruments distributor or our Customer Service team by phone at 1-800-268-6886 or by email at info@criterioninstr.com. Please visit www.criterioninstr.com for the most up-to-date manuals and datasheets. - Page 20 CRITERION INSTRUMENTS Unparalleled precision and reliability in dielectric strength testing www.criterioninstr.com...
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