The PowerTest 1557 is a multi function installation tester with integral probe, allowing the instrument to be held and the results to be read at the same time.
The PowerTest 1557 is also very fast, performing earth loop, line loop, PFC and PSC tests with one press of a button in under 5 seconds. It's lightweight, handheld and battery powered.
Key Features:Comprehensive testing features: Comprehensive 17th edition and Part-P testing features allow for a multitude of tests including: Earth Continuity, Insulation (100V, 250V, 500V), Non-trip Loop Impedance, Line Impedance, RCD Trip current and Voltage/Frequency measurement.
Unique cordless probe: Makes testing a breeze as it allows you a free hand to hold your tester - therefore you can view your results as you're testing.
Smallest and lightest in its class: It fits in the palm of your hand and won't weigh you down.
• Earth Continuity testing with test current of >200mA
• Insulation resistance testing with selectable ranges of 100, 250 and 500V
• Loop/line impedance testing
• RCD trip time testing
• RCD trip current testing
• Voltage/frequency measurements
• Unique cordless probe
• Analogue and digital display
• Doesn't trip RCD when performing loop impedance testing