Amprobe DMIII-Multitest Power-Quality-Recorder - Manual (Page 79)

AMPROBE
DMIII MULTITEST
EN-77
14.1.2. POWER QUALITY function
 VOLTAGE MEASUREMENT – (AUTORANGE)
Range [V] Resolution [V] Accuracy Input Impedance
15

310V 0.2V

(0.5% Reading+2digit)
300k  (Phase-Neutral)
300k

(Phase-Phase) 310

600V 0.4V
 VOLTAGE SAG AND SURGE DETECTION –(MANUAL RANGE)
Range [V]
Resolution
(Voltage)
Resolution
(Time)
Accuracy
(Voltage)
Accuracy (rif. 50Hz)
(Time)
Input Impedance
15

310V 0.2V
10ms (½ period) 
(1.0% Reading+2digit)

10ms (½ period)
300k  (Phase-Neutral)
300k

(Phase-Phase) 30  600V 0.4V
 CURRENT MEASUREMENT – STD & FlexEXTclamps
Range [V] Resolution [mV] Accuracy Input Impedance Overload Protection
0.005  0.26V 0.1

(0.5% Reading+2digit) 200k

5V
0.26

1V 0.4
(*): Example: with a 1000A/1V full scale clamp , the instrument detect only current higher than 5A
 CURRENT MEASUREMENT – FlexINT clamp – 1000A Range
Current Range Input Voltage Range Resolution Accuracy Input Impedance
Overload
Protection
5.00

20.00A 425

V

1.7mV 0.850

V

(4.0%rdg + 8.5

V)
9.166k

5V 20.00

99.99A 1.7mV

8.499mV 0.850

V

(1.0% rdg + 8.5

V)
100.0

999.9A 8.5mV

84.99mV 8.5

V

(1.0% rdg + 85

V)
 CURRENT MEASUREMENT
– FlexINT clamp – 3000A Range
Current Range Input Voltage Range Resolution Accuracy Input Impedance
Overload
Protection
15.00

99.99A 1.27mV

8.499mV 0.850

V

(1.0% rdg + 8.5

V)
9.7k  5V
100.0

270.0A 8.5mV

22.75mV 8.5

V

(1.0% rdg + 42.5uV
270.0

999.9A 22.75mV

84.99mV 8.5

V

(1.0% rdg + 85uV)
1.00

3.00kA 85mV

255mV 850

V

(0.5% rdg + 8.5mV)
 POWER MEASUREMENT
– (AUTORANGE)
Quantity Range Accuracy Resolution
ACTIVE POWER
0

999.9W
1  999.9kW
1

999.9MW
1000

9999MW

(1.0%Reading+2digit)
0.1W
0.1kW
0.1MW
1MW
REACTIVE POWER
0

999.9VAR
1  999.9kVAR
1  999.9MVAR
1000

9999MVAR
0.1VAR
0.1kVAR
0.1MVAR
1MVAR
APPARENT POWER
0

999.9VA,
1

999.9kVA,
1  999.9MVA
1000

9999MVA
0.1VA
0.1kVA
0.1MVA
1MVA
ACTIVE ENERGY
(Classe2 EN61036)
0

999.9Wh,
1

999.9kWh,
1  999.9MWh
1000  9999MWh
0.1Wh
0.1kWh
0.1MWh
1MWh
REACTIVE ENERGY
(Classe3 IEC1268)
0

999.9VARh,
1

999.9kVARh,
1  999.9MVARh
1000  9999MVARh
0.1VARh
0.1kVARh
0.1MVARh
1MVARh
 Cos  MEASUREMENT
Cos

Resolution Accuracy [°]
1.00 – 0.80
0.01
0.6
0.80 - 0.50 0.7
0.50 – 0.20 1.0
 VOLTANGE AND CURRENT HARMONICS MEASUREMENT
Range Accuracy Resolution
DC – 25H  (5% + 2 digit)
0.1V / 0.1A 26H – 33H 
(10% + 2 digit)
34H – 49H  (15% + 2 digit)
Harmonics values are null under fixed threshold:
- DC: its values is null if it is < 2%of Fundamental or is <2% of Full Scale clamp
- 1 st Current Harmonic: its values is null if it is < 0.2% Full Scale clamp
- 2 nd  49 th : its values is null if it is < 0.5% of fundamental or is < 0.1% of Full Scale clamp