powertest 1557 multi function installation tester is a powerful testing tool launched by seaward precision instruments. it can perform a variety of tests including 16th edition and part-p tests, including earth continuity, insulation, non-trip loop impedance, line impedance, rcd trip line, rcd trip current and voltage/frequency measurement.
The PowerTest 1557 combines a handheld design with a cordless probe, allowing users to hold the tester and view results simultaneously. Weighing only 950 g and fitting comfortably in the palm of a hand, it performs a wide range of tests such as Earth Continuity, Insulation (100 V, 250 V, 500 V), Non‑trip Loop Impedance, Line Impedance, RCD trip current, and Voltage/Frequency measurement.
The device includes a full specifications table, a PowerSolutions package with PowerGuard Pro software, and optional accessories. It meets IEC 61010‑1 300 V CAT III, EN 61557 standards and is supplied with AA alkaline batteries, test leads, and safety probes.
| Resolution (Loop Impedance) | 0.010 ms maximum |
|---|---|
| Supply Voltage | 195‑253 V, 45‑65 Hz |
| Dimensions | 260 × 100 × 55 mm |
| Battery Type | 6 × AA alkaline (supplied) |
It is supplied with six AA alkaline cells.
Insulation tests can be performed at 100 V, 250 V, and 500 V.
Yes, it includes a non‑tripping loop feature for measuring loop impedance.