Impedance Meter

Product Details:

Lightweight for high-current measurements

The Sonel MZC-310S meter is one of the most technically advanced short-circuit loop impedance measuring instruments available on the market.

With the use of the Sonel MZC-310S meter it is possible to test short circuit loop impedance in consumer networks as well as in distribution networks protected with high-current circuit breakers. At the same time as measuring the impedance, the shock and contact voltages can be measured. Where the condition for automatic power off cannot be satisfied, the facility may be authorised to operate on the basis of the voltage criterion.

The application of the four-wire method and the flow of the measuring current in the 150/280 A pulse determine the high precision of the performed test. This single device hides a multitude of measurement capabilities, making it appreciated by specialists in many fields. The meter complies with the requirements specified in the EN 61557 standard.

Capabilities

• Measurement of very low short circuit loop impedances (with resolution 0,1 mΩ) with a current of 150 A at 230 V; maximum 280 A at 440 V.
• Measurement with a current of 23 A at 230 V, maximum 42 A at 440 V with resolution 0,01 Ω.
• Measurements in installations with rated voltages: 220/380 V and 230/400 V and frequencies 45…65 Hz.
• Ability to perform measurements in short circuit system: phase-phase, phase-PE, phase-N.
• Differentiation between the phase voltage and the inter-phase voltage while calculating the short circuit current.
• Ability to change the length of test lead (measurement with 2p method).
• 4p (four-pole) method, test leads do not require calibration (measurement with current up to 280 A).
• Measurement of resistance (RS) and reactance (XS) components.

Additional features

• Touch voltage and touch shock voltage measurement with resistor 1 kΩ).
• AC voltage measurement in range 0…440 V.
• Frequency measurement 45.0...65.0 Hz.
• Memory of 990 measurement results, ability to transfer the data to a PC via RS-232.
• Power supply: rechargeable battery (5x LR14).

Reaching the areas unattainable to others

In direct vicinity of transformers or in transformer stations, where the circuits are equipped with a high current protection (fuse-links with the rating of several hundred amperes, motor circuit breakers), fault currents may reach several hundreds of kilo-amps. Measurement of fault loop impedance in such networks requires a high-current meter, which is capable of measuring ZS values at the level of single milliohms. Our patented technical solution, which uses components not available in the commercial offer (unique fault resistor), enables us to offer the meter with perfect performance in such demanding conditions.

Measurements without compromise

Commercially available fault loop impedance meters perform the measurements asymmetrically, i.e. using half-wave current. This solution introduces the transitional constant and DC constant, which does not always result in a linear behavior of the transformer during the tests. This in turn, affects the accuracy of the results. MZC-310S high-current fault loop impedance meter applies symmetrical current for measurements, which means that it uses the full wave - thanks to the advanced design of the measuring system and fault circuit.

Application

MZC-310S is used for measurements in low voltage systems (nominal voltage of 220/380 V or 230/400 V), where the prospective fault current may reach 55.7 kA (measured according to EN 61557). Low weight and high convenience of the device make it perfect for tests and measurements in large and complex manufacturing plants.

Additional Information:

• Production Capacity: 1
• Delivery Time: 1
• Packaging Details: BOX

Product Details:

Measurement of fault loop and more

Get to know the Sonel MZC-304F 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-304F 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 IP67 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 EN 61557.

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 ZL-PE and ZL-N) and 180…460 V (for ZL-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 (RS) and reactance (XS) 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-304F is also a great tool for checking circuits additionally protected by residual current devices.

Additional Information:

• Production Capacity: 1
• Delivery Time: 10
• Packaging Details: BOX

Product Details:

Lightweight for high-current measurements

The Sonel MZC-310S meter is one of the most technically advanced short-circuit loop impedance measuring instruments available on the market.

With the use of the Sonel MZC-310S meter it is possible to test short circuit loop impedance in consumer networks as well as in distribution networks protected with high-current circuit breakers. At the same time as measuring the impedance, the shock and contact voltages can be measured. Where the condition for automatic power off cannot be satisfied, the facility may be authorised to operate on the basis of the voltage criterion.

The application of the four-wire method and the flow of the measuring current in the 150/280 A pulse determine the high precision of the performed test. This single device hides a multitude of measurement capabilities, making it appreciated by specialists in many fields. The meter complies with the requirements specified in the EN 61557 standard.

Capabilities

• Measurement of very low short circuit loop impedances (with resolution 0,1 mΩ) with a current of 150 A at 230 V; maximum 280 A at 440 V.
• Measurement with a current of 23 A at 230 V, maximum 42 A at 440 V with resolution 0,01 Ω.
• Measurements in installations with rated voltages: 220/380 V and 230/400 V and frequencies 45…65 Hz.
• Ability to perform measurements in short circuit system: phase-phase, phase-PE, phase-N.
• Differentiation between the phase voltage and the inter-phase voltage while calculating the short circuit current.
• Ability to change the length of test lead (measurement with 2p method).
• 4p (four-pole) method, test leads do not require calibration (measurement with current up to 280 A).
• Measurement of resistance (RS) and reactance (XS) components.

Additional features

• Touch voltage and touch shock voltage measurement with resistor 1 kΩ).
• AC voltage measurement in range 0…440 V.
• Frequency measurement 45.0...65.0 Hz.
• Memory of 990 measurement results, ability to transfer the data to a PC via RS-232.
• Power supply: rechargeable battery (5x LR14).

Reaching the areas unattainable to others

In direct vicinity of transformers or in transformer stations, where the circuits are equipped with a high current protection (fuse-links with the rating of several hundred amperes, motor circuit breakers), fault currents may reach several hundreds of kilo-amps. Measurement of fault loop impedance in such networks requires a high-current meter, which is capable of measuring ZS values at the level of single milliohms. Our patented technical solution, which uses components not available in the commercial offer (unique fault resistor), enables us to offer the meter with perfect performance in such demanding conditions.

Measurements without compromise

Commercially available fault loop impedance meters perform the measurements asymmetrically, i.e. using half-wave current. This solution introduces the transitional constant and DC constant, which does not always result in a linear behavior of the transformer during the tests. This in turn, affects the accuracy of the results. MZC-310S high-current fault loop impedance meter applies symmetrical current for measurements, which means that it uses the full wave - thanks to the advanced design of the measuring system and fault circuit.

Application

MZC-310S is used for measurements in low voltage systems (nominal voltage of 220/380 V or 230/400 V), where the prospective fault current may reach 55.7 kA (measured according to EN 61557). Low weight and high convenience of the device make it perfect for tests and measurements in large and complex manufacturing plants.

Additional Information:

• Production Capacity: 1
• Delivery Time: 15
• Packaging Details: BOX

Product Details:

Pocket measurements

Simple and ergonomic short circuit loop impedance meter Sonel MZC-20E.

The small MZC-20E meter allows for precise measurement of short circuit loop impedance in networks of different voltage ratings. With the use of this instrument, it is possible to test network voltage up to 440 V. The device is especially useful for installers and measuring engineers providing services in single- and multi-family buildings, office buildings, industrial plants and other buildings and facilities equipped with low-voltage electrical installations. The MZC-20E meter is also perfect for electrical maintenance services. Regardless of the area of application, in each case it guarantees smooth operation and high accuracy of the results obtained. A further advantage of this tool is its ability to operate in adverse environmental conditions, which is made possible by its very robust casing. Despite its compact dimensions, the meter performs its role flawlessly and serves well wherever precise and instant measurements are required.

Capabilities

• Fault loop impedance measurement with 0.01 Ω resolution.
• Operates in networks with voltages 220/380 V, 230/400 V, 240/415 V (operating range 180…440 V).
• Operating frequency 45…65 Hz
• Calculation of Ik fault current.
• Automatic differentiation between phase and phase-to-phase voltage.
• Possibility of applying test leads: 1.2 m, 5 m and longer.
• Measurement with swapped L and N conductors.
• Measurement of resistance (RS) and reactance (XS) components.

Additional features

• Voltage measurement 0...440 V AC.
• Power supply: batteries (4 x LR6) or rechargeable batteries (4 x NiMH).

Application

This meter is designed for measurements on objects protected by circuit breakers with rating up to 63 A, where fault currents reach 1 kA, i.e. in housing industry, single and multi-family houses, office buildings, small factories and all other facilities that are equipped with low-voltage electrical systems. In addition, the meter is a useful tool for maintenance services.

Additional Information:

• Production Capacity: 1
• Delivery Time: 15
• Packaging Details: BOX