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Seaward PowerCheck 1557 PAT And Installation Verification Unit
The Seaward PowerCheck 1557 is a comprehensive PAT and installation verification checkbox. The Seaward PowerCheck 1557 carries out ongoing performance checks to ensure accurate measurement between calibration intervals. The Seaward PowerCheck 1557 fully tests Earth Continuity, Insulation Resistance, RCD Trip Time, RCD Trip Current, Loop, PE Conductor Current, Touch Current and Flash tests.
The Seaward PowerCheck 1557 can be used on earth continuity or earth bond testers up to 25A and also verifies loop impedance or RCD testers on RCD protected circuits - without tripping the RCD. The Seaward PowerCheck 1557 tests to BS 7671, BS EN 61557, IET Onsite Guide and IEE Code of Practice. The Seaward PowerCheck 1557 has full instrument verification against all relevant standards and confirms performance between verifications (this is information required by NICEIC, ELECSA, NAPIT and others).
Seaward PowerCheck 1557 PAT And Installation Verification Unit Features
Earth Continuity Verification | |
Test Current |
In >200mA indication |
Test Voltage |
4V < Un > 24V indication |
Test Resistances |
0.5ohm and 2ohm |
Insulation Resistance Verification | |
Open Circuit Test Voltage |
250V < Un < 375V indication 500V < Un < 750V indication 1000V < Un < 1500 indication |
Test Current |
In >1mA into 1000ohm/V |
Max Test Current |
Ik <2mA |
Test Resistances |
0.25Mohm, 0.5Mohm, 1.0Mohm |
Earth Loop Verification | |
Test Values |
Loop, Loop+1ohm, Loop+180ohm |
RCD Verification | |
Trip Current |
10mA, 30mA, 100mA |
Trip Times |
20ms, 40ms, 500ms |
Voltage Verification | |
Test Voltage |
240V AC rms test output |
Seaward PowerCheck 1557 PAT Function Specifications | |
Earth Continuity Verification | |
Test Resistances |
0.2ohm and 2ohm |
Insulation Resistance Verification | |
Test Resistances |
500kohm, 1Mohm and 2Mohm |
PE Conductor Current | |
Test Currents |
0.1mA, 0.25mA and 0.5mA |
Power Socket Check | |
Flash Test Current |
0.5mA, 1mA and 1.5mA |
General | |
Power Supply |
230V AC ±10% |
Dimensions |
210mm x 145mm x 85mm |
Weight |
1kg |
Video: PAT and Installation Verification Unit - Seaward PowerCheck 1557
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![]() | PAT and Installation Verification Unit - Seaward PowerCheck 1557 |
Category: Electrical Safety & Arc Flash