QuadTech Inc-Hipot Tester AC/DC/IR/SCAN (Model: Guardian 19050 Series)

• AC/DC/IR 3 in 1 hipot tester
• AC 5kV and DC 6kV output
• 1kV insulation resistance test
• Insulation resistance measurement from 1M to 50
• Ground continuity check
• Open Short Check(OSC) function
• GFI shutdown the instrument when imbalance current > 0.5mA
• Flashover (ARC) detection
• Quick discharge of DUT in IR and DC test
• Pause mode
• Large LCD display (240 x 64 dots matrix)
• UL and TUV approved (*see spec)
• CE mark
• Programmable ramp/fall and test time
• Programmable high/low limit
• Save/Recall program test function
• Remote control and interface support
• Download Data Sheet

The Chroma Guardian 19050 series of Hipot Testers is comprised of three models. The Guardian 19052 is equipped for AC/DC/IR Hipot testing and insulation resistance (IR) measurements. The Guardian 19053combines both AC and DC Hipot tests and IR measurements with 8HV scan channel capabilities. The Guardian 19054 combines both AC and DC Hipot tests and IR measurements with 4HV scan channel capabilities. Front panel operation, digital display, and user friendly controls allows test parameters and limits to be set easily without the high voltage activating.

Open Short Check (OSC)

O.S.C function is used to check the connection is open or short circuit between instrument and DUT (equipment under test) before the Electrical Safety Test. If the connection is bad between the instrument and DUT, sometimes like leads or relay oxidation, the judgment is also PASS. In some cases, the DUT is short before testing. Testing continually leads to our instrument broken because suffered the high load current. Therefore, we have to check the open and short circuit to ensure the test effectively and protect instruments.

Generally, the DUT have capacitive load (Cx) from tens to thousands of pF. If the connection opening, a capacitance will appear and then total capacitive load is lower than that in normal condition. If the DUT shorting, total capacitive load is higher than that in normal condition. Therefore, we can measure the value of capactive load to check the contact is good or not.

Ground Continuity Check

All of the 19050 series testers have a ground continuity check feature to determine the resistance, that is between the ground blade of power cord and any exposed metal on the product, is less than 1Ω.

Ground Fault Interrupt (GFI)

The requirement of test environment indicates that test equipmentis equipped with auto interrupt device so that Chroma develops into Ground Fault Interrupt (GFI) function. When the current meter A1 and A2 detect the difference (i2-i1=iH) between the value i1 and actual i2 test current over high, this device can cut the power transiently for protecting human body safety. It is not only compliance with the safety standard but also more safeguards for test personnel.