Short circuit loop parameters measurements:
Testing the RCD breakers of AC, A types:
Detection of the replacement L and N in the socket and automatic conversion in the meter.
Low voltage resistance measurements of protective circuits and junctions:
Rapid check for the correct connection of PE wire using touch electrode.
Measurement of mains voltage and frequency.
Power supply from LR6 batteries or NiMH accumulators (option).
The device meets the requirements of IEC 61557 standard.
MPI-502 is equipment to perform complete test and verify on electrical installations according to the most common safety standards (IEC 61557, VDE 0100, BS7671).
Short circuit loop impedance measurement ZL-PE, ZL-N, ZL-L
Measurment using 7,6/13,3 A current – Measurement range according to
IEC 61557: 0,13…1999 Ω
(for 1,2 m lead) and 0,19…1999 Ω (for WS-01 and WS-04).
Display range | Resolution | Accuracy |
0,00…19,99 Ω | 0,01 Ω | ±(5% m.v. + 3 dgt) |
20,0…199,9 Ω | 0,1 Ω | |
200…1999 Ω | 1 Ω |
Readings of fault loop impedance R and fault loop reactance XL
Display range | Resolution | Accuracy |
0,00…19,99 Ω | 0,01 Ω | ±(5% m.v. + 5 digits) of ZS value |
20,0…199,9 Ω | 0,1 Ω |
calculated and displayed for ZS<200 Ω.
Short circuit loop impedance ZL-PE in mode RCD – without RCD tripping
Measurement using <15 mA,current measurement range in accordance with IEC 61557: 0,51…1999,9 Ω
Display range | Resolution | Accuracy |
0,00…19,99 Ω | 0,01 Ω | ±(6% m.v. + 10 dgt) |
20,0…199,9 Ω | 0,1 Ω | ±(6% m.v. + 5 dgt) |
200…1999 Ω | 1 Ω |
Readings of fault loop impedance R and fault loop reactance XL (without tripping the RCD)
Display range | Resolution | Accuracy |
0,00…19,99 Ω | 0,01 Ω | ±(6% m.v + 10 dgt) of ZS value |
20,0…199,9 Ω | 0,1 Ω | ±(6% m.v + 5 dgt) of ZS value |
RCD parameters test (voltage range 180…270 V):
RCD tripping test and measurment of tripping time tA (for tA function)
Breaker Type | Test Current Multiplier | Range | Resolution | Accuracy |
Standard | 0,5*IΔn | 0…300 ms | 1 ms | ± (2% m.v. + 2 dgt)
|
1*IΔn | ||||
2*IΔn | 0…150 ms | |||
5*IΔn | 0…40 ms | |||
Selective | 0,5*IΔn | 0…500 ms | ||
1*IΔn | ||||
2*IΔn | 0…200 ms | |||
5*IΔn | 0…150 ms |
Voltage measurement
Range | Range | Accuracy |
0,0 V…299,99 V | 0,1 V | ±(2% m.v. + 6 dgt) |
300 V…500 V | 1 V | ±(2% m.v + 2 dgt) |
Frequency measurement
Range | Range | Accuracy |
45,0 V…65,0 Hz | 0,1 Hz | ±(1% m.v. + 1 dgt) |
Touch voltage measurement referred to the rated residual current (UB)
Range | Resolution | Test Current | Accuracy |
0..9,9 V | 0,1 V | 0,4 x IΔn | 10% m.v. ± 5 dgt |
10,0..99,9 V | 0…15% m.v. |
Measurementof the RCD disconection current IA for sine waveform testing current
Selected Current | Range | Resolution | Test Current | Accuracy |
10 mA | 3,3…10,0 mA | 0,1 mA | 0,3 x IΔn…1,0 x IΔn | ±5%IΔn |
30 mA | 9,0…30,0 mA | |||
100 mA | 33…100 mA | 1 mA | ||
300 mA | 90…300 mA | |||
500 mA | 150…500 mA |
RCD IA tripping current measurement for unidirectional pulsating residual current
Selected Current | Range | Resolution | Test Current | Accuracy |
10 mA | 4…20,0 mA | 0,1 mA | 0,35xIΔn..2,0xIΔn | ±10%IΔn |
30 mA | 12,0…42,0 mA | 0,35xIΔn..1,4xIΔn | ||
100 mA | 40,0…140 mA | 1 mA | ||
300 mA | 120…420 mA |
Low voltage test of the circuit and insulation continuity
Measurement range in accordance with IEC61557:0,12…400 Ω
Test of PE wire continuity using a ±200 mA current
Range | Resolution | Accuracy |
0,00…19,99 Ω | 0,01 Ω | ±(2% m.v + 3 dgt) |
20,0…199,9 Ω | 0,1 Ω | |
200…400 Ω | 1 Ω |
The device meets the requirements of EMC standards EN 61326 – 1:2006 and EN 61326 – 2-2:2006.
Electric safety:
Other technical data:
„m.v.” measured value.
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