Introduction Thank you for purchasing your AV-25VA-30V Dielectric Strength Tester with mA indicator. 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.
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• 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.
Features • Ideal for testing control panels, small transformers, small electrical motors, home appliances and other electrical products. • Adjusts from 0 to 2500V AC at 30 mA to meet your testing needs. • Voltmeter shows values for 0 to 2,500V AC with an accuracy of ±2%. •...
Specifications Input 120V, 60Hz Output 0 to 2500V AC at 30mA Transformer Rating 500V A Voltmeter 0 to 2500V AC (±2% of full scale) Ammeter 0 to 30mA AC (±2% of full scale) Trip Current 3 to 30mA Controls On/off switch Fuse Reset push-button High-voltage adjustment knob...
Installation Instructions The AV-25VA-30V 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.
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: •...
• 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.
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.
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OPTIONAL: You may maintain the voltage at the set value for production testing using the probe, but exercise extreme caution. This can be dangerous. Ensure the retractable probe is in good condition, and the operator is standing on a clean rubber mat with dry hands. Also, ensure the terminals to be tested on the unit under test are not connected to a capacitor, transformer, or suppressor.
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.
WARNING: Never substitute any part or component with one that is not specified by Criterion Instruments. Fuse Replacement The fuse used should be a type MDL-3A (or MDX-3A) with a SLO-BLO characteristic.
Applications • Control panels • Lighting fixtures • Transformers • Electrical cables • Electrical motors • Components • Home appliances Appendix The following brief notes aim to describe some characteristics of dielectric strength testing to help the operator better understand its significance.
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What is the distinction between trip current and current limit? The "current limit" is the maximum current the high-voltage power supply can provide. The "trip current" is the current value at which the internal circuit breaker will shut off the high voltage and indicate a failure.
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.
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.
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