Thiết bi đo trở kháng vòng lặp Sonel MZC-306

• Loop impedance measurement with resolution 0,01
• Loop impedance measurement without tripping the circuit breaker > 30mA with resolution 0,01 (100...440V)
• Measurements possible in installations 110/190V, 115/200V, 127/220V, 220/380V, 230/400V, 240/415V, 290/500V and 400/690V (range 100...750V)
• Short circuit current indication
• Voltage measurement up to 750V and up to 250V with resolution 0,1V 
• Measurements using Uni-Schuko adapter or test wires 1,2; 5; 10 and 20m 
• Memory of 990 records
• USB connection with PC
• Powered by disposable or rechargeable (4xLR14)

 Measurement of short circuit loop impedance (Z_L-PE, Z_L-N, Z_L-L)

Measuring range according to IEC61557: 0,13…1999? for 1,2m test leads; 0,25…1999? for UNI-SCHUKO adapter

• rated operating voltage Un_L-N/ Un_L-L: 110/190V, 115/200V, 127/220V, 220/380V, 230/400V, 240/415V, 290/500V, 400/690V,
• operating voltage range: 100…440V (for Z_L-PE and Z_L-N) and 100…750V (for Z_L-L)
• high current measurement (up to 30A),
• operating frequency range: 45…65Hz,
• control of correctness of PE terminal connection by means of a contact electrode (applicable to Z_L-PE),
• measurement is also possible when L and N circuits are swapped,
• measurement of resistance and reactance components,
• short circuit current calculation.

Measurement of short circuit loop impedance ZL-PE RCD (without RCD tripping)
Measuring range according to IEC61557: 0,43...1999? for 1,2m test leads; 0,50...1999? for UNI-SCHUKO adapter

• operating voltage range: 100 ... 440V,
• rated operating voltage Un: 110V, 115V, 127V, 220V, 230V, 240V, 390V, 400V,
• control of correctness of PE terminal connection by means of a contact electrode,
• measurement is also possible when L and N circuits are swapped,
• measurement of resistance and reactance components,
• short circuit current calculation.

Voltage measurement

• frequency range 45…65Hz,
• overvoltage alarm.

Electrical safety:

- type of insulation: double, according to IEC 61010-1
- measurement category: CAT IV 600V (CAT III 1000V)
- protection class acc. to EN 60529: IP54

Other technical data
- power supply: alkaline batteries or NiMH rechargeable batteries, LR14 (4 pcs)
- number of Z measurements (for alkaline batteries): > 5000
- time to Auto-OFF: 300 seconds
- data transmission: USB
- memory of measurement results: 990 cells, 3500 entries
- display: LCD segment
- dimensions: 288 x 223 x 75mm
- meter weight: ca. 2 kg

„m.v.” measured value