Art-Nr.: WMDEMZC304F
Sonel MZC-304F Kurzschluss-Schleifenimpedanz-Prüfgerät
| Measurement functions | measuring range | Display range | Resolution | Accuracy |
|---|---|---|---|---|
| Voltage | 0 V…500 V | 0 V…500 V | from 0.1 V | from ±(2% of rdg. + 2 digits) |
| Frequency | 45.0 Hz…65.0 Hz | 45.0 Hz…65.0 Hz | 0.1 Hz | ±(0.1% of rdg. + 1 digit) |
| Short-circuit loop impedance | ||||
| 2-wire method - measurement with standard current max. current 13.3 A | from 0.13 Ω…1999 Ω according to EN 61557 | 0.00 Ω…1999 Ω | from 0.01 Ω | ±(5% of rdg. + 3 digits) |
| 2-wire method - measurement without RCD tripping | from 0.5 Ω…1999 Ω according to EN 61557 | 0.00 Ω…1999 Ω | from 0.01 Ω | from ±(6% of rdg. + 5 digits) |
| Short-circuit current display | ||||
| 2-wire method - measurement with standard current | Can be calculated from the ZS measuring ranges and the rated voltages | 0.110 A…9999 A | from 0.001 A | Calculated from the short-circuit error |
| 2-wire method - measurement without RCD tripping | Can be calculated from the ZS measuring ranges and the rated voltages | 0.110 A…9999 A | from 0.001 A | Calculated from the short-circuit error |
| Low voltage measurement - continuity measurement | ||||
| Continuity measurement of grounding and equipotential bonding conductors with current ±200 mA | 0.12 Ω…400 Ω according to EN 61557-4 | 0.00 Ω…400 Ω | from 0.01 Ω | ±(2% of rdg. + 3 digits) |
| Resistance measurement with low current | 0.0 Ω…1999 Ω | 0.0 Ω…1999 Ω | from 0.1 Ω | ±(3% of |
The MZC-304F model is one of the smallest available devices for measuring loop impedance in 230/400 V networks – ideal for installers who also want to test the continuity of protective and equipotential bonding connections. It enables highly accurate loop measurements with a resolution of 0,01 Ω – even in protected circuits with RCD ≥30 mA.
Thanks to the backlit display and illuminated keypad, the device is ideally suited for use in poor lighting conditions. A robust, waterproof housing with protection rating IP67 reliably protects the device even under harsh outdoor operating conditions.
Of course, the MZC-304F meets the requirements of standard EN 61557.
Technical highlights
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High resolution for loop impedance measurements: 0,01 Ω
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Safe operation even in RCD-protected circuits ≥30 mA (180–270 V)
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Voltage ranges: 180–460 V for ZL-L, 180–270 V for ZL-PE and ZL-N
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Supported network systems: 220/380 V, 230/400 V, 240/415 V
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Frequency range: 45–65 Hz
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Short-circuit current calculation (Ik)
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Also suitable for use with swapped L and N conductors
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Measurement of resistance (RS) and reactance (XS)
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Continuity test at low voltage
Additional functions
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PE conductor test via integrated touch electrode
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Voltage measurement up to 500 V AC
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Frequency measurement: 45,0–65,0 Hz
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Data memory for up to 990 measured values
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Wireless communication via Bluetooth
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Operation with 4x LR14 batteries or 4x NiMH rechargeable batteries
Applications
The MZC-304F is ideally suited for testing in buildings with low-voltage installations – from residential buildings and office complexes to small industrial operations. Maintenance teams also benefit from the device’s reliable performance, for example in systems with potential short-circuit currents up to 4,4 kA. The device is also particularly suitable for networks protected by RCD/RCB devices – an indispensable tool for modern electrical testing in accordance with EN 61557.
| Properties |
|---|
| Humidity max.: | 90% |
|---|---|
| electromagnetic compatibility (EMV): | EN 61326-2-2, IEC/EN 61326-1 |
| interface: | Bluetooth |
| measurement category: | CAT III 600 V, CAT IV 300 V |
| operating temperature: | 0 °C - +50 °C |
| power supply: | 4x batteries 1,5 V, 4x batteries 1,5 V, NiMH or LR6 |
| protection rating: | Enclosure IP 67 |
| storage temperature: | -20 - +70 °C |
| Weight: | 0.8 kg |
| Width: | 102 mm |
| Height: | 220 mm |
| Measurement functions | measuring range | Display range | Resolution | Accuracy |
|---|---|---|---|---|
| Voltage | 0 V…500 V | 0 V…500 V | from 0.1 V | from ±(2% of rdg. + 2 digits) |
| Frequency | 45.0 Hz…65.0 Hz | 45.0 Hz…65.0 Hz | 0.1 Hz | ±(0.1% of rdg. + 1 digit) |
| Short-circuit loop impedance | ||||
| 2-wire method - measurement with standard current max. current 13.3 A | from 0.13 Ω…1999 Ω according to EN 61557 | 0.00 Ω…1999 Ω | from 0.01 Ω | ±(5% of rdg. + 3 digits) |
| 2-wire method - measurement without RCD tripping | from 0.5 Ω…1999 Ω according to EN 61557 | 0.00 Ω…1999 Ω | from 0.01 Ω | from ±(6% of rdg. + 5 digits) |
| Short-circuit current display | ||||
| 2-wire method - measurement with standard current | Can be calculated from the ZS measuring ranges and the rated voltages | 0.110 A…9999 A | from 0.001 A | Calculated from the short-circuit error |
| 2-wire method - measurement without RCD tripping | Can be calculated from the ZS measuring ranges and the rated voltages | 0.110 A…9999 A | from 0.001 A | Calculated from the short-circuit error |
| Low voltage measurement - continuity measurement | ||||
| Continuity measurement of grounding and equipotential bonding conductors with current ±200 mA | 0.12 Ω…400 Ω according to EN 61557-4 | 0.00 Ω…400 Ω | from 0.01 Ω | ±(2% of rdg. + 3 digits) |
| Resistance measurement with low current | 0.0 Ω…1999 Ω | 0.0 Ω…1999 Ω | from 0.1 Ω | ±(3% of |