SONEL-MZC-304 Short Circuit Loop Impedance

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Item Code

WMGBMZC304

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SONEL-MZC-304 Short Circuit Loop Impedance

Short circuit loop measurement and more

Get to know the Sonel MZC-304 compact short circuit loop impedance meter with many measurement functions.

The presented model is one of the smallest instruments available on the market intended for short circuit loop impedance measurements in 230/400 V networks and continuity of protective and equipotential connections measurements. The MZC-304 meter performs short circuit loop measurements with a resolution of 0.01 Ω, also in the case of measurements in networks protected with RCD switches. With a backlit keyboard and display, the device can be used even in low light. The device has a sealed casing with IP 67 protection, which is characterised by excellent resistance and ensures smooth operation even under adverse environmental conditions.

The device meets the requirements set out in standard PN-EN 61557.

Measurement of fault loop and more
Capabilities
Fault loop impedance measurement with 0.01 Ω resolution.

Low-current impedance measurement in circuits protected by RCD ≥ 30mA with 0.01 Ω resolution (range of 180...270 V)

Operates in networks with voltages 220/380 V, 230 V/400 V, 240/415 V (operating range 180...460 V)

Operating voltage range: 180…270 V (for Z_L-PE and Z_L-N) and 180…460 V (for Z_L-L).

Maximum measuring current: 7.6 A for 230 V (3x10 ms), 13.3 A for 400 V (3x10 ms).

Operating frequency 45…65 Hz

Calculation of Ik fault current.

Measurement with swapped L and N conductors.

Measurement of resistance (R_S) and reactance (X_S) components.

Low-voltage measurement of continuity of circuit and resistance.
Additional features
Contact electrode - quick testing of proper connection of PE conductor.

Voltage measurement 0...500 V.

Frequency measurement 45.0...65.0 Hz.

Memory of 990 measurement results, ability to transfer the data to a PC via Bluetooth.

Power supply: batteries (4 x LR14) or rechargeable batteries (4 x NiMH).
Application

The instrument is dedicated to personnel performing measurements in single and multi-family buildings, office buildings, industrial plants and any other places equipped with low voltage electrical systems. In addition, the meter is intended for maintenance personnel working on objects, where fault currents reach 4.4 kA (measured according to EN 61557). MZC-304 is also a great tool for checking circuits additionally protected by residual current devices.