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Powertest 1557


If you're looking for the Powertest 1557 datasheet featuring full technical specifications or the instruction manual, you can find them here.


Insulation Resistance
Test Voltage100V, 250V, 500V
Display Range0.05Mohms - 199Mohms
Resolution0.01Mohms maximum
Live Circuit Detection Testinhibit if >30V detected
RCD Trip Time
Supply VoltageDefault Spec Value195 - 253V, 45 - 65Hz
Test Currents10, 30, 100, 300, 500mA
Trip Time Ranges0ms - 2000ms at ½IDn[br]0ms - 300ms at IDn general
Earth Continuity
Test Current>200mA
Display Range0.00ohms - 199ohms
Resolution0.01ohms max
Test LeadCompensation: 0.00ohms - 10.00ohms
Live Circuit DetectionTest inhibit if >30V detected
Loop/Line Impedance
Supply Voltage195 - 253V/440V, 45Hz - 65Hz
Test Current15mA (non tripping for RCD protected circuits)
Display Range0.01ohms - 2000ohms
Resolution0.01ohms maximum
Loop ImpedancePhase to Earth
Line ImpedancePhase to Neutral/Phase to Phase
PFC/PSC Range0 - 26kA

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