MPI-530

MPI-530 meter is a multi-functional instrument for electric shock protection measurements including the option of various methods for measuring earthing and earthing resistance. 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:

• impedance measurement with resolution 0,001 Ω and 23 A current (44 A phase-to-phase) – short-circuit resistor R_ZW=10 Ω,
• measurement range: 95…440 V, frequency 45…65 Hz,
• measurement of short circuit loop impedance with resolution 0,01 Ω, in protected systems without tripping the RCD’s with I_Δn ≥ 30 mA,
• automatic calculation of short-circuit current, differentiating between phase-to-phase and phase-to-neutral voltage,
• measurements using UNI-Schuko plug with measurement triggering  button (also when L and N leads are exchangeable) or 1,2 m, 5 m, 10 m, 20 m test leads, with optional use of  3-phase socket adapters (AGT),
• selection of installation protections and automatic evaluation of measurements results.

Tests of residual current devices (RCD), types AC, A, F, B and B+:

• measurement of general, short-time delay and selective RCD’s with rated residual current of 10, 30, 100, 300, 500 and 1000 mA,
• automatic measurement of all RCD parameters (when the START button is pressed, the meter performs the whole measurement cycle, including the.

L-PE short circuit loop impedance measurement with 15 mA current),

• user selected waveform of forced leakage current: sinusoidal (start from increasing or decreasing edge), unidirectional pulsating (positive or negative), unidirectional pulsating with DC bias (positive and negative), direct (positive and negative),
• measurement of tripping current I_A using the ramp current,
• measurement of tripping time t_A at  ½I_Δn, 1I_Δn, 2I_Δn and 5I_Δn ,
• measurement of touch voltage UB and protective conductor resistance RE without the RCD tripping,
• detection that L and N conductors are switched in the socket; will not affect the measurement,
• measurement of tripping current  I_A and actual tripping time t_AI at single activation of RCD,
• measurement for 95…270 V voltage.

Insulation resistance measurements:

• test voltage values: 50 V, 100 V,  250 V,  500 V  and 1000 V,
• insulation resistance measurements up to 10 GΩ,
• in-socket measurements using the UNI-Schuko adapter,
• meter is protected against voltage on the tested object and voltage appearing during the measurement,
• auto-discharge of the object after the measurement,
• automatic measurement of all resistance combinations in three-, four- and five core leads using the additional AutoISO-1000C adapter,
• acoustic signalling of five-second periods to enable determining the time profile during the insulation resistance measurements.

Low-voltage resistance measurement of equipotential and protective bonding:

• continuity measurement  of protective conductor with  ≥200 mA current in both directions,
• low current measurement  with sound signal,
• autocalibration of test leads – leads of any length can be used.

Earth resistance measurements:

• measurement with 3- and 4-pole methods with 2 additional electrodes,
• measurement with the 3-pole method with and additional clamp,
• measurement with 2-clamp method.

Soil resistivity measurements.
Illuminance measurements.
Quick check of PE connection correctness.
Measurement and recording of voltage, frequency, AC, cosφ and power (active,reactive and apparent), voltage and current harmonics up to 40,  THD.
Checking reactive phase sequence and motor direction of rotation.
Innovative memory with possibility of description of: measurement points, facilities, names of customers.
Power supply from rechargeable of disposable batteries (optional)
The meter conforms to EN 61557.

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 t_A (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