MPI-530-IT

MPI-530-IT meter is a multi-functional instrument for electric shock protection measurements including the option of various methods for measuring earthing and earthing resistance. Sonel MPI-530-IT allows testing of residual current devices (RCD), types AC, A, F and B also in IT network. Additionally the meter enables its user to analyse power supply parameters, records and displays them on its screen. The instrument automatically measures the insulation resistance in a socket and in 3 -, 4 – and 5-wire cables when used with AutoISO-1000C adapter. Measurement results may be continuously verified, depending on user’s demand or according to binding regulations. Memory of the instrument may store tens of thousands of measurements allowing users to store them in a structure of a protocol and describe individual measurement points.

Measurement of short circuit loop impedance Z_L-PE, Z_L-N, Z_L-L
Test current: 23/40 A; measuring range acc. to IEC 61557: 0,13…1999,9 Ω
(for 1.2 m test lead):

• Rated voltage: 95…270 V (for Z_L-PE and Z_L-N) and 95…440 V (for Z_L-L)
• Frequency: 45…65 Hz;

Measurement of short circuit loop impedance Z_L-PE in RCD mode
Test current: 15 mA, measuring range acc. to IEC 61557: 0,50…1999 Ω

• Rated voltage: 95…270 V
• Frequency: 45…65 Hz

_{Measurement of earth resistance RE with the 3p and 4p method}
Measuring range acc. to IEC 61557 – 5:

• 0,50 Ω…1,99 kΩ for test voltage 50 V
• 0,56 Ω…1,99 kΩ for test voltage 25 V

• test voltage: 25 V or 50 V rms
• test current: 20 mA, sinusoidal rms 125 Hz (for f_n=50 Hz) and 150 Hz (for f_n=60 Hz)
• measurement blocked at interference voltage U_N > 24 V
• maximum measured interference voltage U_nmax= 100 V
• maximum resistance of auxiliary earth electrodes 50 kΩ
   

Selective earth resistance measurement with clamp (3p + clamp)

• measurement with additional current clamp
• interference current measuring range: up to 9,99 A

Selective earth measurement with two clamps

• measurement with transmitting and receiving clamps
• interference current measuring range: up to 9,99 A

Soil resistivity mesurement (ρ)

• measurement with Wenner’s method
• distance settable in metres or feet
• distance range: 1…30 m (1…90 feet)

Phase sequence indication

• Phase sequence indication: conforming, non-conforming
• Mains voltage range UL-L: 100…440 V (45…65 Hz)
• Display of phase-to-phase voltage values

Measurements of RCD parameters (voltage range 95…270 V):

RCD tripping test and measurement of tripping time tA (for t_A measurement function)

• accuracy of residual current application: for 0,5*I_Δn:-8…0% for 1*I_Δn, 2*I_Δn, 5*I_Δn: 0…8%

Measurement of RCD tripping current IA for sinusoidal residual current (AC type)

• The measurement can be started from positive or negative half-period of forced leakage current

Measurement of RCD tripping current IA for unidirectional residual current and unidirectional
with the 6 mA DC bias (type A)

Measurement for positive or negative half-periods of forced leakage current

Measurement of RCD tripping current IA for direct residual current (type B)

• Measurement for positive or negative half-periods of forced leakage current
• I_Δn – rated residual current

Insulation resistance measurements
Measuring range acc. to IEC 61557 – 2:

• for U_N = 50 V: 50 kΩ…250 MΩ
• for U_N = 100 V: 100 kΩ…500 MΩ
• for U_N = 250 V: 250 kΩ…999 MΩ
• for U_N = 500 V: 500 kΩ…2 GΩ
• for U_N = 1000 V: 1,000 MΩ…9,99 GΩ

• *) not greater than measuring range for given voltage

Low-voltage measurement of resistance and circuit continuity
Measurement of protective conductor continuity with the ±200 mA current

• voltage on open terminals: 4…9 V
• output current at R < 2 Ω: min. 200 mA
• autocalibration of test leads
• measurements for both current polarities

Illuminance measurement

• measurement in luxes (lx) or feet-candles (fc)

ANALYSIS AND RECORDING OF SINGLE-PHASE SYSTEM

• Voltage measurement ULN: 0…500 V
• Frequency range of measured voltages: 45,0…65,0 Hz
• Frequency measurement range for 50…500 V voltages: 45,0…65,0 Hz (basic uncertainty max. ± 0,1% m.v. + 1 digit)
• cosφ measurement: 0,00…1,00 (resolution 0,01)
• Measurement and recording in single-phase system

Current measurement (True RMS)

• * the accuracy of current clamps must also be taken into account

Measurement of active power P, reactive power Q, apparent power S and cosφ

• voltage range: 0…500 V
• current range: 0…1000 A (3000 A)
• mains rated frequency fn: 50 Hz, 60 Hz
   

Voltage harmonics measurement

• in addition display of h02…h40 values as percent of h01 (up to 999%)
• *) from 300 V to 500 V

THD (in relation to the 1 st harmonics)

NOTE: “m.v.” means “ measured value”

The instruments conforms to:

• EN 61010 – 1 (general safety requirements)
• EN 61010 – 031 (detailed safety requirements)
• EN 61326 (electromagnetic compatibility)
• EN 61557 – 10 (requirements for combined instruments)
• IEC 60364 – 6-61 / HD 60364 – 6 (measurements – verification)
• IEC 60364 – 4-41 / HD 60364 – 4-41 (measurements – protection against electric shock)
• EN 04700 (measurements – acceptance tests)
• EN 12464 (lighting of work places)
• DIN VDE 0100
• DIN VDE 0413
• BS 7671