Seaward Power Test 1557

Ever since we launched the world's first multi-function installation tester way back in 1985, we've been looking for ways to improve our installation testers, making them safer and easier to use. And here is our latest innovation. An installation tester which puts the measurement display and test button where they ought to be - in your line of sight. Makes sense when you think about it. You wouldn't buy a car that had the instrument panel hanging around your neck so why compromise on your test equipment? And of course the PowerTest 1557 includes many of our previous innovations, such as automatic RCD testing, test lead compensation and a quick and accurate non-trip loop test with automatic PSC and PFC calculation. We hope you'll agree that the PowerTest 1557 has broken the mould, so go on, give yourself a good probe. Technical SpecificationEarth ContinuityTest Current: >200mA Display Range: 0.00ohms - 199ohms Resolution: 0.01ohms max Test Lead: Compensation: 0.00ohms - 10.00ohms Live Circuit Detection:Test inhibit if >30V detected Insulation ResistanceTest Voltage 100V, 250V, 500V Display Range0.05Mohms - 199Mohms Resolution 0.01 Mohms maximum Live Circuit Detection Test inhibit if >30V detected Loop/Line ImpedanceSupply Voltage: 195 - 253V/440V, 45Hz - 65Hz Test Current: 15mA (non tripping for RCD protected circuits) Display Range: 0.01 ohms - 2000ohms Resolution: 0.01 ohms maximum Loop Impedance:Phase to Earth Line Impedance: Phase to Neutral/Phase to Phase PFC/PSC Range: 0 - 26kA RCD Trip TimeSupply Voltage: 195 - 253V, 45 - 65Hz Test Currents:10, 30, 100, 300, 500mA Trip Time Ranges: 0ms - 2000ms at ½IDn 0ms - 300ms at IDn general

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