Description

Electrical Installation Multi-function Meter MPI-520

Technical Specifications

Possible measurements:

Short-circuit loop measurement:

• Impedance measurement with 23 A current (44 A phase-to-phase) – short-circuit resistor R = 10 Ω
• Measurement range: 95 – 440 V, frequency 45 – 65 Hz

Short-circuit loop measurement with resolution 0,01 Ω, in distribution network without triggering RCD (I_Δn≥30 mA):

• Automatic calculation of short-circuit, detection of phase voltage and phase-to-phase voltage
• Additional UNI-Schuko plug for automatic measurement, AGT adapter for 3 phase network measurement

Testing of general and selective RCD with the rated differential current of 10,30,100,300,500 And 1000 mA. (Type AC, A, and B).

Measurement of insulation resistance:

• With test voltage 250 V, 500 V, 1000 V
• Measurement range up to 3 GΩ
• UNI-Schuko plug for insulation measurement
• Automatic discharging after measurement
• Automatic measurement of all resistances in 3,4,5-wire cables using optional adapter AUTO-ISO
• Acoustic signals in 5-sec intervals for insulation resistance characteristic
• Safety measurement – protection against overvoltage

Measurement of earthing resistance.

Bi-directional testing of PE wire continuity using 200 mA current.

• Autocalibration of test leads

Phase sequence testing.

Memory is divided into 10 memory banks each of them containing 99 memory cells.

Battery charge indicator.

AUTO-OFF function.

USB interface.

Rated operational conditions:

– Operation temperature 0 – +50°C

Electric security:

– Type of insulation: double, according to PN-EN 61010 – 1 And IEC 61557, EMC
– Measurement category: IV 300 V acc. to PN-EN 61010 – 1
– Protection class acc. to PN-EN 60529: IP54

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 R_E 

Measuring range acc. to IEC 61557-5: 0,50 Ω -1999 Ω

Insulation resistance measurements

Measuring range acc. to IEC 61557-2:

• For U_N= 50 V: 50 kΩ- 250 MΩ
• U_N = 100 V: 100 kΩ – 500 MΩ
• U_N = 250 V: 250 kΩ – 999 MΩ
• For U_N = 500 V: 500 kΩ – 2 GΩ
• U_N = 1000 V: 1 MΩ – 3 GΩ

*Limited to measurement range.
-With UNI-Schuko additional error  ±2 %

Phase sequence

– Phase sequence indicator: forward, reverse
– Mains voltage range U_L-L: 100 – 440 V (45 – 65 Hz) U_L-L: 100 – 440 V (45 – 65 Hz)
– Display of phase-to-phase voltages

Measurement of the active P, passive Q, and apparent S power and cosφ

• Range of voltages ULN: 0 – 440 V
• Nominal frequency of the network: 45 – 65 Hz
• Frequency measurement for voltage 50 – 440 V in range 45,0 – 65,0 Hz (accuracy max. ± 0,1%m.v. + 1 digit)

– Measurement cosφ: 0,00 – 1,00 (resolution 0,01)

Low-voltage test of the circuit and insulation continuity

Test of PE wire continuity using ±200 mA current

• Voltage on open terminals: 4 – 9 V
• Test current at R < 2 Ω: min. 200 mA at rated battery voltage
• Autocalibration of test leads
• Measurements for both polarizations of the current

RCD trigger and response time test t_A(for t_A mode):

Measurement ranges in accordance with IEC 61557: 0 ms – up to the upper bound of the displayed value

Precision of the differential current: for 0,5*I_Δn:-8 – 0% | for 1*I_Δn | 2*I_Δn | 5*I_Δn: 0 – 8%

Measurement of the RCD triggering current (I_A) for sine waveform testing current

It is possible to start the measurement from the positive or negative half of the forced leaking current

Measurement of RCD tripping current (I_A) for a unidirectional half-period sine waveform test current with a 6 mA DC offset

Measurement is possible for positive or negative forced leakage current

Measurement of RCD triggering current (I_A) for direct testing current 

Measurement is possible for a positive or negative forced leakage current

Calibration certificates are issued during the production process. New calibration certificates are available upon request at an additional cost.

NOTE: “m.v.” – measured value.