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Home › Seaward › Seaward ERT 1557 (Earth Resistance Tester)
Seaward ERT 1557 (Earth Resistance Tester)
Suitable for use on 110 v, 230 v and three phase electrical systems, this special lightweight
unit provides accurate Earth electrode resistance measurement without disconnecting the
electrode.
It can also be used to measure soil resistivity. Earth resistance measurement is
carried out using 2,3 and 4-wire method. The ERT has an internal memory for 500 test
results which you can download to your conventional PC.
Its user-friendly features include a large rotary dial for test selection, large LCD and simple push button test activation.
The unit is supplied with four Earth spikes and full test lead set.
The ERT is one of the most competitive Earth resistance testers on the market.
Key Features
 Current Clamp measurement
Earth Resistance measurement
Battery powered
Download to PC
Store up to 500 records
2, 3, or 4 wire measurement
Ideal Users
Telecomms engineers
Power systems engineers
Electricians
Electrical contractors
Additional Information
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Dimensions - 260mm x 100mm x 55mm
Weight - 0.8kg
Memory - 500 memory locations
Communication - USB
Compliance - EN 61557-1, -5, IEC61010-1, 300V CAT II
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Data Sheet
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Tests
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Earth Resistance 2, 3 and 4 wire method
Display Range - 0.00ohm - 50.0kohm
Measuring Frequency - 125 Hz +/- 1 Hz
Measuring Current - <20mA effective
Measuring Voltage - <50V effective sine wave
Earth Resistance using current clamp
Display Range - 0.0ohm - 2.00kohm
Measuring Frequency - 125 Hz +/- 1 Hz
Measuring Current - <20mA effective
Measuring Voltage - <50V effective sine wave
Specific Earth resistance (p)
Display Range - 0.00ohm – 1999kohm
Measuring Frequency - 125 Hz +/- 1 Hz
Measuring Current - <20mA effective
Measuring Voltage - <50V effective sine wave
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Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.
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