MZC-304

Loop Meter

Danh mục:
Mzc 304 L 0

Datasheet

 User Manual

 Declarations of conformity

 Firmware for MZC-304

Measurements of impedance in a short circuit loop.

  • L-PE circuit,
  • L-N, L-L circuit,
  • L-PE(RCD) circuit – without tripping the circuit breaker ≥ 30 mA.

Low voltage resistance measurement:

  • continuity measurement – DC current +200 mA with wire resistivity reset
  • low current resistance measurement with accoustic signalling,

the measurements are posible in instalations 220/380 V, 230/400 V, 240/415 V with frequeency range 45…65 Hz.

memory of 10 banks of 99 cells each (min.10000 records).

Radio wireless interface comunication

Short circuit loop impedance ZL-PE,ZL-N,ZL-L , resistance and reactance measurement
Short circuit loop impedance ZS

RangeResolutionAccuracy
0,00…19,99 Ω0,01 Ω±(5% m.v. + 3 digits)
20,0…199,9 Ω0,1 Ω
200…1999 Ω1 Ω
  • nominal work voltage UnL-N / UnL-L: 220/380 V, 230/400 V, 240/415 V,
  • voltage range 180…270 V (for ZL-PE i ZL-N) and 180…460 V (dla ZL-L),
  • nominal network frequency fn: 50 Hz, 60 Hz,
  • frequency range: 45…65 Hz,
  • maximum measurement current 7,6 A for 230 V (3 x 10 ms), 13,3 A for 400 V (3 x 10 ms),
  • PE terminal connection correctness check with the help of touch electrode (ZL-PE, ZL-PE(RCD)),
  • short circuit current calculation for nominal voltage

 

Short circuit loop resistance RS and reactance XS

RangeResolutionAccuracy
0,00…19,99 Ω0,01 Ω±(5% m.v. + 5 digits) wartości ZS
20,0…199,9 Ω0,1 Ω

calculated and displayed for ZS<200 Ω

Short circuit loop impedance ZL-PE RCD measurement – without tripping the circuit breaker
Short circuit loop impedance ZS measurement

RangeResolutionAccuracy
0,00…19,99 Ω0,01 Ω±(6% m.v. + 10 digits)
20,0…199,9 Ω0,1 Ω±(6% m.v. + 5 digits)
200…1999 Ω1 Ω
  • No RCD reaction for I?n≥30 mA,
  • nominal work voltage Un: 220 V, 230 V, 240 V,
  • voltage range: 180…270 V,
  • nominal network frequency fn: 50 Hz, 60 Hz,
  • frequency range: 45…65 Hz,
  • PE terminal connection correctness check with the help of touch electrode
  • short-circuit current calculation for nominal voltage

Short circuit resistance RS and reactance XS display range (for ZL-PE RCD)*

RangeResolutionAccuracy
0,00…19,99 Ω0,01 Ω±(6% m.v. + 10 digits) of ZS value
20,0…199,9 Ω0,1 Ω±(6% m.v. + 5 digits) of ZS value

*ocalculated and displayed for Zs<200 Ω

Low voltage resistance measurement
Measurement of continuity of equipotential bondings and protective conductors with ±200 mA current

RangeResolutionAccuracy
0,00…19,99 Ω0,01 Ω±(2% m.v. + 3 digits)
20,0…199,9 Ω0,1 Ω
200…400 Ω1 Ω
  • open terminals voltage: 4…9 V DC,
  • output current at R<2 Ω: min 200 mA (ISC: 200…250 mA),
  • test leads resistance compension,
  • measurement for both current polarization

Low current resistance measurement

RangeResolutionAccuracy
0,0…199,9 Ω0,1 Ω±(3% m.v. + 3 digits)
200…1999 Ω1 Ω
  • open terminals voltage4…9 V DC
  • output current ISC< 8 mA,
  • accustic signal for measured resistance < 30 Ω ± 50%,
  • test leads resistance compensation.

AC voltage measurement

RangeResolutionAccuracy
0,0 V…299,99 V0,1 V±(2% m.v. + 6 digits)
300 V…500 V1 V±(2% m.v. + 2 digits)
  • frequency range 45…65 Hz,
  • test result refreshing: twice per second

Frequency measurement

RangeResolutionAccuracy
45,0 V…65,0 Hz0,1 Hz±(0,1% m.v. + 1 digit)
  • voltage range: 50… 500 V

Electrical safety:

  • type of insulation: double, according EN 61010, 61557:2007 – 01
  • measurement category: III 600 V (CAT IV 300 V)
  • protectin class acc. to EN 60529: IP67

Other technical data:

  • power supply: package of batteries (AA, 4 pcs.)
  • batteries performance (short-circuit loop): min.5000 measurements

Rated operational conditions:

  • operating temperature: 0…+50°C
  • humidity: 20 – 80%
  • rated mains voltage: 220/380 V, 230/400 V, 240/415 V

“m.v. = measured value”

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