SEW 1120 ER Digital Earth Resistance Tester
- Brand
- SEW
- Model number
- 1120 ER
- Category
- Earth Resistance Testers
IP54 3-wire earth resistance tester for single electrodes, lightning conductors and bonding joints: 0.01 Ω to 1999 Ω and 0-200 V earth voltage at 820 Hz / 2 mA, with 0 Ω adjustment and simplified 2-wire probe.
Price and availability on request
Key features
- Waterproof: IP54
- Capable of measuring earth resistance and earth voltage
- 2mA measuring current permits the testing of earth resistance without tripping earth leakage current breakers in the circuit under test
- Test leads supplied as standard for simplified two-wire measuring
- 0Ω adjustment
- Battery operated
- Data hold function
- Low battery indication
- Calibration performed with supplied test leads
- 820Hz test frequency and built-in filter reject stray currents at power frequencies
Specifications
| Ranges / resolution | 0-20Ω (0.01Ω) / 0-200Ω (0.1Ω) / 0-2000Ω (1Ω) |
|---|---|
| Accuracy | ±(2%rdg+2dgt) or ±0.1Ω, whichever is greater |
| Measuring system | Constant current inverter 820Hz, approx. 2mA |
| Range / accuracy | 0-200 Vac (40-500Hz) / ±(1%rdg+2dgt) |
|---|
| Display | 3½ digit (2000 counts), 0Ω adjustment |
|---|---|
| Protection | IP54 |
| Dimensions | 175 (L) x 85 (W) x 75 (D) mm |
| Weight | Approx. 600g (battery included) |
| Power source | 1.5V (AA) x 8 |
| Safety standards | EN IEC 61010-1 CAT III 200V, IEC 61557-1, IEC 61557-5, EN IEC 61326-1 |
| Standard accessories | Instruction manual; test leads (red 15m, yellow 10m, green 5m); auxiliary earth spikes; simplified measurement probe; soft pouch; shoulder belt; batteries |
|---|
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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