User Manual: ST-AC Pro' AC spark tester
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ST-AC Pro’ High Frequency Spark Tester Instruction manual Please read this manual before using the equipment

Instruction Manual

Description The ST-AC Pro’ high frequency tester comprises of a lightweight, hand-held probe connected by a cable to a portable generator. A robust aluminium case houses the generator and its components. On the front panel of the case there is: ● ON/OFF Indicator lamp ● Output ON/OFF/Control knob ● Handle probe connection On the back panel of the case there is: ● Earth return socket ● Mains voltage selector switch ● IEC mains input socket ● Mains ON/OFF switch Technical data Operating temperature range: Storage temperature range: Supply voltage: 0°C to +30°C -10°c to +40°c 110/120 volts or...

Instruction Manual Unpacking The ST-AC Pro’ and the handle should be removed from their bags and be checked for damage. If any part is damaged, the carrier and supplier should be notified immediately. All packing material should be kept for inspection and the STAC Pro’ should not be used. The package contains the following items: 1 x Generator unit 1 x Flexible probe lead 1 x Probe handle 1 x Operating instructions 1 x Mains power lead If any of these are missing, contact your supplier immediately. The packaging should be retained for the future to be used if the unit needs to be sent back...

ST-AC Pro’ The high voltage generated by this unit is at a frequency of 100KHz, well above the motor frequency of the human central nervous system. A serious shock is unlikely if the probe is accidentally touched during operation, however it is likely to be painful, and may result in localised burns. A greater risk is to those who might have an incipient heart condition or from the reflex action when receiving a highfrequency shock, relating to contact by the operator if working near hot surfaces or rotating machinery. Injury could also occur if the spark reached sensitive parts of the body...

Instruction Manual Check that the operating voltage is in accordance with the available supply voltage by reference to the voltage selector switch on the back of the generator unit. Connect a suitable plug (preferably fused at 3 Amps) to the mains supply cable as follows: Brown - Live, Blue - Neutral, Green/Yellow – Earth WARNING: This equipment MUST be earthed WARNING: The equipment should not be operated if any part is in a damaged condition Ensure that the mains supply is disconnected, and then screw the flexible probe electrode into the red end of the handle. WARNING: do not connect...

Calculating the test voltage It is important to set an appropriate test voltage, as if it is too high, the spark may damage the material being tested, and if it is too low, the user may not detect flaws that are present. Buckleys AC instruments generate between 10 and 55kV AC, and the level can be set by turning the knob on the instrument. The recommended setting is the minimum that achieves the desired result. The easiest way to determine the best setting is to set up a test with a sample (e.g., 30cm square) of the material to be tested with the same thickness as the actual test material....

Instruction Manual Applications Insulation Testing: The insulation to be tested should have a conductive backing, e.g. if a joint in plastic or rubber is to be tested, it should be laid on a metal sheet. If this is not practical, aluminium foil or copper wire can be placed behind the joint. It is recommended that this should be earthed, although it is not necessary if the area of the metal backing is very much larger than the area of the probe, e.g. greater than 1000:1. Adjust the output of the ST-AC Pro’ for the item under test (see: Calculating the test voltage). Slowly sweep the area to...

Risk Assessment It the user’s responsibility to complete a risk assessment before using Buckleys equipment. The following points offer some guidance but must not be assumed to be complete or sufficient. Personal safety • Have all users been trained in the correct and safe use of the instruments? • Are they aware that the instrument produces high voltages, and can give electric shocks if used incorrectly? • Is the instrument in good condition, undamaged? Is the instrument dry? Are the accessories similarly in good condition, dry and undamaged? • Is it possible to ensure that persons with...

Instruction Manual Other Risks • Have you checked that there are no ongoing processes in the area (eg below the roof you’re working on) that may be dangerous – X-ray machines, other radiation? Are you certain that the instrument has not been immersed, dropped or otherwise damaged in a way that is not obvious? Have you verified that the ground connection is actually grounded? Is the person responsible for site safety aware of / fully understanding the testing you are going to do, and has it been reviewed in line with the site procedures? NOTE: Wherever you are intending to use equipment of...

EC Declaration of conformity We, Buckleys (UVRAL) Ltd., as sole manufacturer of the apparatus listed below, declare that the product ST-AC Pro’ High Frequency Spark Tester is manufactured in conformity with the following directives: 2014/30/EU, 2014/35/EU, 2015/863/EU and 2011/65/EU (RoHS). Date: 01/07/2021 Authorised by: J P Hoveman CEO, Buckleys (UVRAL) Ltd. UKCA Declaration of conformity We, Buckleys (UVRAL) Ltd., as sole manufacturer of the apparatus listed below, declare that the product ST-AC Pro’ High Frequency Spark Tester is manufactured in conformity with the following UK...

Instruction Manual

Contact details Manufacturer: Buckleys House Unit G, Concept Court Shearway Business Park Shearway Road Folkestone Kent CT19 4RG, UK Distributor details

Product registration Thank you for choosing a Buckleys product, we are sure it will provide you with many years of reliable service. Please register this product via Buckleys’ website and download the Warranty Registration Certificate. Register your product in 5 minutes Once your product is registered, you will receive the following benefits:    FREE annual service & calibration reminders by email Latest industry news relating to your product Be the first to hear about our new products We strive to improve the quality of our products and service. Registering your product helps us monitor...