SEW 1620 ER 3-Wire Digital Earth Resistance Tester, 40 Ω / 400 Ω / 4 kΩ

SEW 1620 ER 3-Wire Earth Resistance Tester

The SEW 1620 ER is a microprocessor-controlled digital tester for measuring earth resistance by the 3-wire method. It covers three ranges, 0–40 Ω, 0–400 Ω and 0–4 kΩ, with a resolution of 0.01 Ω on the lowest range, and it can also measure earth voltage from 0 to 400 V AC (40–500 Hz).

Earth resistance is measured by a constant current inverter at 820 Hz with a test current of approximately 2 mA. This low measuring current permits testing of earth resistance without tripping the earth leakage current breakers in the circuit under test.

Readings are shown on a 3¾ digit (4000 counts) LCD with backlight. The instrument is rated EN 61010-1 CAT IV 400 V, complies with EN 61557-1 and EN 61557-5, and is powered by six 1.5 V AA batteries.

Key Features

• Microprocessor-controlled
• Measures earth resistance in three ranges: 40 Ω, 400 Ω, 4 kΩ
• Capable of measuring earth voltage, 0–400 V AC (40–500 Hz)
• 3¾ digit (4000 counts) LCD with backlight
• 2 mA measuring current permits testing without tripping earth leakage current breakers in the circuit under test
• Data hold function
• Relative function
• Auto power-off function
• Low battery indication
• Calibration performed with the supplied test leads
• Safety: EN 61010-1 CAT IV 400 V

Package Contents

• Instruction manual
• Test leads AL-36 (red 15 m, yellow 10 m, green 5 m)
• Auxiliary earth spikes TEL-1505 S
• Carry case TOC-1505
• Batteries

Optional Accessories

• Simplified measurement probe AL-33