MZC-20E   

Catalog index: WMGBMZC20E

Short-circuit Loop Impedance Meter

 

   

The meter has been designed for fitters and measurement technicians performing services in residential buildings, office blocks, manufacturing plants and any facilities possessing a low-voltage electrical system. The instrument is also recommended for electrical maintenance personnel.

Measurements of impedance in a short-circuit loop Z within the range S
of 0.24…200 Ω
Short-circuit current IK: 1,15 – 958,3 A (Un =230 V)
AC voltage measurement: 0 – 440 V

Display range Resolution Accuracy
0,00…19,99 Ω 0,01 Ω ±(2,5% m.v + 5 digits)
20,0…199,9 Ω 0,1 Ω ±(2,5% m.v + 3 digits)
100…200 Ω 1 Ω ±(3% m.v + 3 digits)
  • Rated operating voltage UnL-N / UnL-L : 220/380V, 230/400V, 240/415V
  • Operating voltage range: 180…270V (for ZL-PE i ZL-N ) and 180…440V (for ZL-L )
  • Rated network frequency fn : 50Hz, 60Hz
  • Frequency operating range: 45…65Hz
  • Maximum measurement current: 15,3 A for 230 V (10ms) and 26,7 A for 400 V (10ms)

Short-circuit resistance RS and reactance XS display range:

Display range Resolution Accuracy
0,00…9,99 Ω 0,01 Ω ±(5% m.v. + 5 digits) of ZS value

Calculated and displayed fori ZS <10 Ω.

 

Short-circuit current IK display
Measuring range according to IEC 61557 can be calculated based on ZS
measuring range and rated voltage values.

Display range Resolution Accuracy
1,15…9,99 A 0,01 A Calculated based on the accuracy
for the short-circuit loop accuracy
10,0…99,9 A 0,1 A
100…999 A 1 A
1,00…9,99 kA 0,01 kA
10,0…40,0 kA 0,1 kA

Short-circuit loop impedance ZS measurement

Measuring cable ZS measuring range
1,2m 0,24…200 Ω
5m 0,26…200 Ω
10m 0,28…200 Ω
20m 0,35…200 Ω

Voltage measurement

Display range Resolution Accuracy
0…440 V 1 V ±(2,5% m.v + 3 digits)

Electrical safety:

  • type of insulation double, according to EN 61010-1 and IEC 61557
  • measurement category III 300 V according EN 61010-1
  • protection class acc. to EN 60529 IP67

Other technical data:

  • power supply LR6 alkaline batteries or NiMH rechargeable AA batteries (4 pcs.)
  • dimensions 220x98x58 mm
  • instrument weight incl. batteries 509g
  • storage temperature -20…+70 Co – working temperature -10…+50 Co
  • humidity 20…80%
  • reference temperature +23 ± 2 Co
  • reference humidity 40…60%
  • altitude < 2000m
  • Auto-OFF time max. 900 sec.
  • number of Z measurement (for rechargeable batteries) >5000 (2 measurement/minute)
  • display LCD segment
  • quality standard developed, designed and manufactured acc. to ISO 9001
  • the instrument is compliant with the requirements of IEC 61557
  • the instrument complies with PN-EN 61326-1:2006 and EN 61326-2-2:2006

Data Sheet                                      

User Manual                                   

Declarations of conformity          

 

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