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上海楹點檢測設備有限公司
- 咨詢熱線：張經理
15121077168
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MZC-304
MZC-304回路阻抗測試表
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指數:
WMGBMZC304
Loop Meter
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 **ling,
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
Range Resolution Accuracy
0,00...19,99 Ω 0,01 Ω ±(5% m.v. + 3 digits)
20,0...199,9 Ω 0,1 Ω
200...1999 Ω 1 Ω
一、nominal work voltage UnL-N / UnL-L: 220/380 V, 230/400 V, 240/415 V,
二、voltage range 180…270 V (for ZL-PE i ZL-N) and 180…460 V (dla ZL-L),
三、nominal network frequency fn: 50 Hz, 60 Hz,
四、frequency range: 45…65 Hz,
五、maximum measurement current 7,6 A for 230 V (3 x 10 ms), 13,3 A for 400 V (3 x 10 ms),
六、PE terminal connection correctness check with the help of touch electrode (ZL-PE, ZL-PE(RCD)),
七、short circuit current calculation for nominal voltage
Short circuit loop resistance RS and reactance XS
Range Resolution Accuracy
0,00...19,99 Ω 0,01 Ω ±(5% m.v. + 5 digits) warto?ci ZS
20,0...199,9 Ω 0,1 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
Range Resolution Accuracy
0,00...19,99 Ω 0,01 Ω ±(6% m.v. + 10 digits)
20,0...199,9 Ω 0,1 Ω ±(6% m.v. + 5 digits)
200...1999 Ω 1 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)*
Range Resolution Accuracy
0,00...19,99 Ω 0,01 Ω ±(6% m.v. + 10 digits) of ZS value
20,0...199,9 Ω 0,1 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
Range Resolution Accuracy
0,00...19,99 Ω 0,01 Ω ±(2% m.v. + 3 digits)
20,0...199,9 Ω 0,1 Ω
200...400 Ω 1 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
Range Resolution Accuracy
0,0...199,9 Ω 0,1 Ω ±(3% m.v. + 3 digits)
200...1999 Ω 1 Ω
?open terminals voltage4...9 V DC
?output current ISC< 8 mA,
?accustic ** for measured resistance < 30 Ω ± 50%,
?test leads resistance compensation.
AC voltage measurement
Range Resolution Accuracy
0,0 V...299,99 V 0,1 V ±(2% m.v. + 6 digits)
300 V...500 V 1 V ±(2% m.v. + 2 digits)
?frequency range 45...65 Hz,
?test result refreshing: twice per second
Frequency measurement
Range Resolution Accuracy
45,0 V...65,0 Hz 0,1 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:
1.operating temperature: 0...+50°C
2.humidity: 20 - 80%
3.rated mains voltage: 220/380 V, 230/400 V, 240/415 V
"m.v. = measured value"