AMPI-520 Multifunction Electrical Installation Meter

The AMPI-520 digital meter is designed to measure impedance in short-circuit loops without tripping the differential protection, it also measures the protection tare, earth resistance, continuity and phase sequence check.

It also measures alternating voltage, current, frequency and power.

The meter performs Short Circuit Loop Measurement, Testing of Differential, General and Selective Protections for Differential Current, Insulation Resistance Measurement, Up to 3GΩ, Voltages: 250 V, 500 V, 1000 V, Earth Resistance Measurement, Bidirectional Continuity Test on PE Cables, Phase Sequence

It has the following characteristics:

Short circuit loop measurement:
Impedance measurement with 23 A (44 A phase-to-phase), short circuit resistance RZW =10Ω
Measuring range: 95...440V, frequency 45...65 Hz
Short circuit loop measurement with resolution 0,01 Ω , without tripping the differential protections (I∆n ≥30mA)
Automatic short-circuit calculation, phase-neutral and phase-phase voltage detection
UNI-Schuko plug connection for automatic measurement, AGT adapter for measurements in three-phase networks
Testing of differential, general and selective protections for 10, 30, 100, 300, 500 and 1000 mA differential current. Measurement of insulation resistance:
With application of the test voltages: 250 V, 500 V, 1000 V
Average range up to 3GΩ
UNI-Schuko plug connection for insulation measurement
Automatic download after measurement
Automatic measurement of all resistances on 3, 4 or 5-wire cables using the optional AUTO-ISO adapter
Acoustic signals at 5 s intervals to obtain the insulation characteristic curve
Surge safety protection
Measurement of the earth resistance.
Bidirectional continuity test on PE cables using 200 mA
Self-calibration of test cables.
Phase sequence check
Battery charge indication
Auto shut-off function
USB Interface
Phase sequence:
Phase sequence display: advance, delay
Supply voltage range UL-L : 100...440V (45...65Hz)
Display of phase-to-phase voltages
Measurement of active (P), reactive (Q), apparent (S) power and cosφ
UL-N voltage range : 100...440V
Nominal mains frequency: 45...65Hz
Frequency measurement for voltages in the range 50...440V in the range 45.0...65.0Hz (max. accuracy ± 0.1% measured value +1 digit)
Measure cosφ: 0.00...1.00 (resolution 0.01)

Low voltage and insulation continuity test

Check the PE cable using a current of ±200
Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(2% v.m. + 3 digits)
20,0...199,9Ω	0,1Ω
200...400Ω	1Ω
Test current at R<2Ω: minimum 200mA at nominal battery voltage
Self-calibration of test cables
Two-way measurement

Differential protection trip and response time test tA (for mode tA )

IEC61557 measurement range: 0ms ... up to the upper limit of the displayed value

Type of
switch

Adjustment of the multiplication factor

Range
measuring

Resolution

Accuracy

general-purpose

0.5*I∆n

0...300ms

1ms

±(2% v.m. + 2 digits)

1* I∆n

2* I∆n

0...150ms

5*I∆n

0...40ms

Selective

0.5*I∆n

0...500ms

1* I∆n

2* I∆n

0...200ms

5*I∆n

0...150ms

Differential current accuracy for 0.5*I∆n :-8...0%; for 1* I∆n,2* I∆n,5*I∆n : 0...8%

Measurement of the current threshold of the differential protection (IA) for sine-wave test current

Selected switch rated current

Range

Resolution

Measuring current

Accuracy

10mA

3,3...10,0mA

0.1mA

0.3*I∆n...1*I∆n

±5% I∆n

30mA

9.0...30.0mA

100mA

33...100mA

1mA

300mA

90...300mA

500mA

150...500mA

1000mA

330...1000mA

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

Measurement of the current threshold of the differential protection for a unidirectional half period of sinusoidal waveform with a DC current offset of 6mA

Selected switch rated current

Range

Resolution

Measuring current

Accuracy

10mA

4.0...20.0mA

0.1mA

0.4*I∆n...2*I∆n

±10% I∆n

30mA

12.0...42.0mA

100mA

40...140mA

1mA

0.4*I∆n...1.4*I∆n

300mA

120...420mA

500mA

200...700mA

Measurement for positive or negative leakage current is possible

Measurement of the current threshold of the differential protection (IA ) for DC continuous test

Selected switch rated current

Range

Resolution

Measuring current

Accuracy

10mA

4.0...20.0mA

0.1mA

0.4*I∆n...2*I∆n

±10% I∆n

30mA

12.0...60.0mA

1mA

100mA

40...200mA

300mA

120...600mA

500mA

200...1000mA

Measurement for positive or negative leakage current is possible

"v.m." - measured value

Measurement of short circuit impedance Z L-PE , Z L-N , Z L-L

Measurement using the current range 23/40 A according to IEC 0.13...1999,9Ω (for 1.2m cables)

Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(5% v.m. + 3 digits)
20,0...199,9Ω	0,1Ω
200...1999Ω	1Ω
Voltage range: 95...270V (for Z L-PE and Z L-N ) and 95...440V (for Z L-L )
Frequency: 45...65Hz

Measurement of short circuit loop impedance Z L-PE RCD

Measured using 15 mA current range according to IEC 61557: 0.50...1999,9Ω

Range	Resolution	Accuracy
0,00...19,99Ω	0,01Ω	±(6% v.m. + 10 digits)
20,0...199,9Ω	0,1Ω	±(6% v.m. + 5 digits)
200...1999Ω	1Ω
Voltage range: 95...270V
Frequency: 45...65Hz

Earthing resistance measurement RE

Voltage range according to IEC 61557-5: 0.5...1999Ω

Range

Resolution

Accuracy

0,00...9,99Ω

0,01Ω

±(2% v.m. + 4 digits)

10,0...99,9Ω

0,1Ω

±(2% v.m. + 3 digits)

100...999Ω

1Ω

1.00...1,99kΩ

10Ω

Insulation resistance measurement

Measured according to IEC 61557-2:
-UN=50V: 50kΩ...250MΩ		-UN=500V: 500kΩ...2GΩ
-UN=100V: 100kΩ...500MΩ		-UN=1000V: 3GΩ...3GΩ
-UN=250V: 250kΩ...1GΩ
Range	Resolution		Accuracy
0...1999kΩ	1kΩ		±(3% v.m. + 8 digits)
2,00...19,99MΩ	0,01MΩ
20.0...199,9MΩ	0,1MΩ
200...999MΩ	1MΩ
1,00...3,00GΩ	0,01GΩ		±(4% v.m. + 6 digits)
With UNI-Schuko connection additional error ±2%.

AMPI-520 detailed features
Electrical safety:
Type of insulation	Double, according to EN 61010-1 and IEC 61557, EMC
Measurement category	CAT IV 300V according to EN 61010-1
Protection class, according to EN 60529	IP54
Other technical data:

Food	LR14 alkaline batteries (5 pcs.) or Ni-MH battery set ( option)

Nominal conditions of use:

operating temperature range	0...+50°C

Standard accessories:

SCHUKO probe with power button (WS-03)
Test cable with banana plug, 1.2 m yellow
Test cable with banana plug, 1.2 m blue
Test cable with banana plug, 1.2 m red
Test cable reel with banana plug, 30 m, red
Test cable reel with banana plug, 15 m, blue
USB cable
Pointed probe with banana connection, yellow
Pointed probe with banana connection, red
Pointed probe with banana connection, blue
Alligator clip K02 red
Alligator clip K02 yellow
Ground contact javelin, 0.3m
Transport box L1
Straps
LR14 battery box and batteries (C)
Batteries
Calibration certificate

Optional accessories:

Test cable with banana plug, 5 m red
Test cable with banana plug, 10 m red
Test cable with banana plug, 20 m red
Battery charger cable
Car lighter compatible battery charger cable (12V)
AGT-16P three-phase plug adapter
AGT-32P three-phase plug adapter
AGT-63P three-phase plug adapter
AUTO-ISO-1000C Adapter
Adapter TWR-1 (universal connection) for testing differential switches
Probe with UNI-SCHUKO (WS-04)
Grounding javelin 0.8 m
Transport box L3
Current clamp C3 ( =52 mm), round connection
Ni-MH battery set, 4.8 V, 4.2 Ah
Alligator clip K02, blue
Staple
Test Cable Reel
Z7 socket adapter
Software for creating documentation of electrical measurements
Software for the creation of drawings and diagrams

Download the catalogue of AMPI-520 Multifunction Electrical Installation Meter.

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If you have any doubts or need advice from our engineers, don't hesitate to contact us and we will be pleased to help you. You can also call us at (+34) 982 20 99 20.