Seaward ERT1557 Earth Resistance Tester

The Seaward ERT 1557 Earth Resistance Tester is suitable for use on 110V, 230V and three phase electrical systems. The ERT1557 is a  special lightweight unit that provides accurate earth electrode resistance measurement without disconnecting the electrode. It can also be used to measure soil resistivity. The earth resistance measurement is carried out using 2, 3 and 4-wire methods. This earth resistance tester has an internal memory capable of storing 500 test results which can be download to your PC. It has user-friendly features including a large rotary dial for test selection, a large LCD screen and simple, push button test activation. The unit comes complete with four Earth spikes and full test lead set. Seaward's ERT is one of the most competitive Earth resistance testers on the market.

Key features
► Lightweight unit ideal for carrying between tests
► 2, 3 or 4 wire measurement
► Earth electrode measurement without need to disconnect electrode
► Results download to PC or direct to printer
► Internal storage of up to 500 results
► Battery powered
► Current clamp measurement (when purchased with Current Clamp)

Earth resistance 2, 3 and 4 wire
► Display range: 0.00 - 50.0k
► Frequency: 125Hz +/- 1Hz
► Current: <20mA effective
► Voltage: <50V effective sine wave

Earth resistance with Current Clamp
► Display range: 0.0 - 2.00k
► Frequency: 125Hz +/- 1Hz
► Current: <20mA effective
► Voltage <50V effective sine wave

Specifric earth resistance (p)
► Display range: 0.00 - 1999k
► Frequency: 125Hz +/- 1Hz
► Current: <20mA effective
► Voltage: <50V effective sine wave

► Memory: 500 locations
► Communication: USB
► Compliance: EN61557-1, IEC61010-1, 300V CAT II
► Dimensions: 260 x 100 x 55mm
► Weight: 800g