HDE HiSAT Series Leakage Arrester Testers

The Hi-Test family of Arrester/Leakage Testers is fully portable and easy to use. They are current limited high voltage testers that can be used for safe and non-destructive testing of MOV arresters, insulators, and a wide variety of other parts and materials. They identify faulty arresters, assist in reducing line losses and reduce customer complaints. Non-visible failures of surge arresters are the source of operational problems that are difficult to locate in the field and costly to utility companies. Surge arresters are subject to both thermal and moisture problems which can produce gradual failures over time with no accompanying external visual evidence. Radiofrequency interference, television interference, and blinking light complaints are all common symptoms of non-visible failures on distribution circuits.

Benefits

• Find non-visible defects in MOV arresters safely & conveniently
• Test MOV arresters for shorts and spark overvoltage.
• Test bell type, distribution class polymer, and cross arm pin insulators within the voltage range of the units, as well as fuses, transformer bushings, and tank lids by imposing voltage and measuring the leakage current
• A fully portable and easy-to-use solution for safe and non-destructive testing of arresters
• Stretch your materials budget by testing arresters and insulators for re-use potential
• Use in the field and in the shop
• Increase quality assurance by randomly testing new material purchases
• Ideal for transformer rebuild shops and maintenance yards
• Non-destructive testing makes it extremely valuable
• Troubleshoot service calls and RFI/TVI complaints in the field caused by non-visible partial shorts in arresters
• Use in training programs to demonstrate the function of arresters and other materials as they respond to increasing voltage

Operation

The Hi-Test Arrester/Leakage Tester has two test leads which, when connected to the top and bottom of the arrester, enable the user to increase the DC voltage that is being applied to the arrester. The user can then measure the exact voltage at which the arrester conducts. The unit will display both the maximum voltage an arrester will support at full conduction and the current leakage at any voltage imposed on the arrester. Both the applied voltage and current leakage are displayed on bright, easy-to-read LED displays. The voltage is displayed in DC and equivalent AC increments. The current is displayed on a 50 microamp LED meter scaled in 5 microamp steps with a convenient "full-on" display when current leakage exceeds 50 microamps. The Hi-Test Arrester/Leakage Tester can also be used to test insulators, fuses, transformer bushings, and tank lids. The tester will not properly test gap type or hybrid MOV/gap type arresters such as Hubbell Optima and Cooper VariGAP. HDE'sAT-100 Lightning Arrester and Leakage Tester will test this type and all other types of lightning arresters.