Loop impedance testers compared
Technical data of the 4 units of this type offered by Amperis, row by row. Tick «Compare» on two or three to see them side by side, copy the link or print the comparison.
| AMZC-304: loop impedance meter | AMZC-305: loop impedance meter | AMZC-306: loop impedance meter | High Current Short Circuit Loop Impedance Meter AMZC-310S | |
|---|---|---|---|---|
| Test current | Max. 13.3 A at 400 V; 7.6 A at 230 V (3 × 10 ms) | High current, up to 30 A | High current, up to 30 A | 4p: 150 A at 230 V, max. 280 A at 440 V; 2p: 23 A at 230 V, max. 42 A at 440 V |
| Measuring range | 0.13 – 1999 Ω (EN 61557); no-trip RCD mode: from 0.5 Ω | ZL-PE, ZL-N, ZL-L: 0.13 – 1999 Ω (IEC 61557); no-trip RCD mode: 0.43 – 1999 Ω | ZL-PE, ZL-N, ZL-L: 0.13 – 1999 Ω (IEC 61557); no-trip RCD mode: 0.43 – 1999 Ω | 4p: 7.2 – 1999 mΩ (IEC 61557); 2p: 0.13 – 199.9 Ω (1.2 m leads) |
| Resolution | 0.01 Ω | 0.01 Ω | 0.01 Ω | 0.1 mΩ (4p measurement) |
| Accuracy | ±(5 % rdg + 3 digits) | ±(5 % rdg + 3 digits) up to 19.99 Ω; ±(4 % rdg + 3 digits) above | ±(5 % rdg + 3 digits) up to 19.99 Ω; ±(4 % rdg + 3 digits) above | 4p: ±(2 % rdg + 2 mΩ); 2p: ±(2 % rdg + 3 digits) / ±(3 % rdg + 3 digits) |
| Voltage measurement | 0 – 500 V; networks 180 – 460 V; 45 – 65 Hz | 0 – 750 V (0.1 V resolution up to 250 V); networks from 110/190 V to 400/690 V (100 – 750 V); 45 – 65 Hz | 0 – 750 V (0.1 V resolution up to 250 V); networks from 110/190 V to 400/690 V (100 – 750 V); 45 – 65 Hz | 0 – 440 V True RMS, ±(2 % rdg + 2 digits); DC and 45 – 65 Hz; 220/380 V and 230/400 V networks |
| Other measurements | Prospective short-circuit current 0.110 – 9999 A; R and X components; continuity ±200 mA (0.12 – 400 Ω); frequency | Prospective short-circuit current; R and X components; PE touch electrode; overvoltage alarm | Prospective short-circuit current; R and X components; PE touch electrode; overvoltage alarm | Prospective short-circuit current (4p: 115 A – 32 kA at 230 V; 200 A – 55.7 kA at 400 V); R and X components; prospective touch voltage and shock voltage 0 – 100 V; frequency 45 – 65 Hz |
| Memory and communications | 990 results; Bluetooth | 990 cells (3500 records); USB | 990 cells (3500 records); USB | 990 results; RS-232 (USB with optional adapter) |
| Power supply | 4 AA batteries or NiMH rechargeables | 4 AA batteries or rechargeables; > 3000 measurements | 4 LR14 alkaline or NiMH cells; > 5000 measurements | 5 LR14 (C) alkaline batteries; ≥ 2000 measurements |
| Safety and protection | CAT IV 300 V (CAT III 600 V); IP67; double insulation; EN 61557 | CAT IV 600 V (CAT III 1000 V); IP54; double insulation (IEC 61010-1); IEC 61557 | CAT IV 600 V (CAT III 1000 V); IP54; double insulation (IEC 61010-1); IEC 61557 | CAT IV 300 V; IP20; double insulation (EN 61010-1); EN 61557 |
| Dimensions and weight | 220 × 102 × 61 mm; 0.8 kg | 260 × 190 × 60 mm; 2.2 kg | 288 × 223 × 75 mm; 2 kg | Not stated on the product page |
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Data from the specifications table of each product page and, for units without a product page, from their technical documentation. Missing data is flagged.
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