SEW 4120 ER Digital Earth Resistance Tester
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SEW 4120 ER Digital Earth Resistance Tester
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13-03-2017
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Spesifikasi SEW 4120 ER Digital Earth Resistance Tester
SEW 4120 ER Digital Earth Resistance Tester
Summary 4120 ER
- Instrument type: digital
- Earth Voltage Test: 0 – 200V
- Earth Resistance Test: 0 – 20Ω, 0 – 200Ω, 0 – 2kΩ
- Measuring Method: 3-wire testing
- Additional Features: data hold mode, low battery indication, open circuit indication, over range indication
Features
- 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
- The leads are supplied as standard accessories for simplified two-wire measuring system
- Battery operated. Data hold function. Low battery indication
- Calibration performed with supplied test leads
Specifications
| Measuring ranges | Earth resistance 0-20Ω / 0-200Ω / 0-2000Ω |
| Earth voltage 0-200 Vac(40-500Hz) | |
| Accuracy | Earth resistance ±(2%rdg+2dgt) at 200/2000Ω, ±(2%rdg+0.1Ω) at 20Ω Earth voltage ±(1%rdg+2dgt) |
| Earth resistance resolution | 0-20Ω : 0.01Ω 0-200Ω : 0.1Ω 0-2000Ω : 1Ω |
| Measuring system | Earth Resistance by constant current inverter 820Hz approx. 2mA. |
| Display | 3½ digit (2000 counts) |
| Open circuit indication | LED will be unlit |
| Low battery indication | + |
| Data hold indication | + |
| Over range Indication | “1”(MSD) |
| Dimensions | 250(L) x 190(W) x 110(D)mm |
| Weight (battery included) | Approx. 1500g |
| Power source | 1.5V (AA) × 8 |
| Safety standard | EN 61010-1 CAT III 300V IEC 61557-1 IEC 61557-5 EN 61326-1 |
Scope of delivery 4120 ER
- Digital Earth Resistance Tester 4120 ER
- Instruction manual
- Test leads (red-15m, yellow-10m, green-5m)
- Auxiliary earth spikes
- Simplified measurement probe
- Shoulder belt
- Batteries
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