The Cooper VFI Vacuum Fault Interrupter Tester is a current injection device designed to simulate Fault Current for verification of minimum trip values and time current characteristics of Tri-Phase and TPG electronic control boards utilized in VFI pad-mounted switchgear.
Three internal flux-shift trippers enable confirmation of the presence of sufficient levels of energy upon the control board for operation of pad-mounted VFI flux-shift trippers. The on-board flux-shift trippers also enable self-checking of the VFI tester prior to general control testing. Further flux-shift tripper capability enables verification of operation of the flux-shift trippers within the VFI unit under test, external to the Cooper VFI tester.
The Cooper VFI Vacuum Fault Interrupter Tester has the capability to perform the following operational tests:
• Minimum-Trip Tests
• Time Current Curve Characteristic Tests
• Control Operation Test • Instantaneous Trip Test
• Time-Current Curve Characteristics Modifier
• Limited Testing of SCADA accessory board functions including verification of the minimum trip multiplier function and inrush restraint feature.
• Battery Test
• Flux-Shift Tripper Tests
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