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MPI-520多功能仪表电气装置

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产品简介

The MPI-520 multifunction meter is dedicated to perform diagnosis of electrical installation according to IEC 61557 standards. Digital meter MPI-520 is designed to measure impedance of a short cicuit

详细介绍

The MPI-520 multifunction meter is dedicated to perform diagnosis of electrical installation according to IEC 61557 standards. Digital meter MPI-520 is designed to measure impedance of a short cicuit loop also without triggering RCD, parameters
of RCD, insulation resistance, earthing resistance, continuity and also for phase sequence testing. Furthermore to measure and logging of AC voltage and current, frequency and power.
Wide range of standard accessories enable to perform all necessary measurements and safety test. Highly professional portable multifunction meter with memory of measured parameters.

MPI-520 Technical Specifications

Possible measurements

Short-circuit loop measurement:
- impedance measurement with 23A current (44A phase-to-phase) - short-circuit resistor R=10Ω,
- measurement range: 95...440V, frequency 45...65Hz,
Short-circuit loop measurement with resolution 0,01Ω, in distribution network without tiggering RCD (IΔn≥30mA):
- 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 1000mA. (Type AC, A and B).
Measurement of insulation resistance:
- with test voltage 250V, 500V, 1000V,
- measurement range up to 3GΩ,
- UNI-Schuko plug for insulation measurement,
- automatic discharging after measurement,
- automatic measurement of all resistences in 3,4,5-wire cables using optional adapter AUTO-ISO,
- acoustic signals in 5sec intervals for insulation resistance characteristic,
- safety measurement - protection against overvoltage.
Measurement of earthing resistance.
Bi-directional testing of PE wire continuity using 200mA 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.

Short-circuit loop impedance measurement Z_L-PE, Z_L-N, Z_L-L
Measurement using 23/40A current measurement range in accordance with IEC 61557: 0,13...1999,9Ω
(for 1,2m lead ):

Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(5% m.v. + 3 dgt)
20,0...199,9Ω	0,1Ω
200...1999Ω	1Ω

rated voltage: 95...270V (for Z_L-PE i Z_L-N) and 95...440V (for Z_L-L)
frequency: 45...65Hz

Short-circuit loop impedance measurement Z_L-PERCD
Measurement using 15mA current measurement range in accordance with
IEC 61557: 0,50...1999,9Ω

Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(6% m.v. + 10 dgt)
20,0...199,9Ω	0,1Ω	±(6% m.v. + 5 dgt)
200...1999Ω	1Ω	±(6% m.v. + 5 dgt)

rated voltage: 95...270V
frequency: 45...65Hz

Measurement of earthing R_E
Rated voltage in accordance with IEC 61557-5:
0,5Ω…1,99kΩ for 50V
0,56Ω…1,99kΩ for 25V

Range	Resolution	Accuracy
0,00...9,99Ω	0,01Ω	±(2% m.v. + 4 dgt)
10,0...99,9Ω	0,1Ω	±(2% m.v. + 3 dgt)
100...999Ω	1Ω
1,00...1,99kΩ	0,01kΩ

Insulation resistance measurement
Measurement range in accordance with IEC 61557-2:
- for U_N = 50V: 50kΩ...250MΩ
- for U_N= 100V: 100kΩ...500MΩ
- for U_N = 250V: 250kΩ...1GΩ
- for U_N = 500V: 500kΩ...2GΩ
- for U_N = 1000V: 1MΩ...3GΩ

Display range*)	Resolution	Accuracy)**
0...1999kΩ	1kΩ	±(3% m.v. + 8 dgt)
2,00...19,99MΩ	0,01MΩ
20,0...199,9MΩ	0,1MΩ
200...999MΩ	1MΩ
1,00...3,00GΩ	0,01GΩ	±(4% m.v. + 6 dgt)

*) limited to measurement range.
**) with UNI-Schuko additional error ±2%.

Phase sequence
- phase sequence indicator: forward, reverse
- mains voltage range UL-L: 100...440V (45…65Hz) UL-L: 100...440V (45...65Hz)
- display of pase-to-phase voltages

Measurement of the active P, passive Q and apparent S power and cosφ
- Range of voltages ULN: 0...440V
- Nominal frequency of the network: 45...65Hz
- frequency measurement for voltage 50...440V in range 45,0...65,0Hz (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 a ±200mA current

Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(2% m.v. + 3 dgt)
20,0...199,9Ω	0,1Ω
200...400Ω	1

Voltage on open terminals: 4…9V
Test current at R<2Ω: min. 200mA 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_Amode)Measurement ranges
in accordance with IEC 61557: 0ms ... up to the upper bound of the displayed value

Breaker Type	Test Current Multiplier	Measurement Range	Resolution	Accuracy
Standard	0,5*I_Δn	0...300ms	1 ms	± (2% m.v. + 2 dgt)
	1*I_Δn	0...300ms
	2*I_Δn	0...150ms
	5*I_Δn	0...40ms
Selective	0,5*I_Δn	0...500ms
	1*I_Δn	0...500ms
	2*I_Δn	0...200ms
	5*I_Δn	0...150ms

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

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

Selected Current	Range	Resolution	Test Current	Accuracy
10mA	3,3...10,0mA	0,1mA	0,3xI_Δ..1,0xI_Δ	± 5%I_Δn
30mA	9,0...30,0mA	0,1mA
100mA	33...100mA	1mA
300mA	90...300mA
500mA	150...500mA
1000mA	330...1000mA	1mA

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

Measurement of the RDC triggering current (I_A ) for a unidirectional half period sine
waveform test current with a 6mA direct current offset

Selected Current	Range	Resolution	Test Current	Accuracy
10mA	4...20,0mA	0,1mA	0,4xI_Δn..2,0xI_Δn	±10%I_Δn
30mA	12,0...42,0mA	0,1mA	0,4xI_Δn..1,4xI_Δn
100mA	40,0...140mA	1mA
300mA	120...420mA
500mA	200...700mA

- a measurement is possible for a positive or negative forced leakage current

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

Selected Current	Range	Resolution	Test Current	Accuracy
10mA	4,0...20,0mA	0,1mA	0,4xI_Δn..2,0xI_Δn	±10%I_Δn
30mA	12,0...60,0mA	1mA
100mA	40...200mA
300mA	120...600mA
500mA	200...1000mA