HT instruments VEGA78 - Manual (Page 113)

VEGA78
EN - 111
9. TECHNICAL SPECIFICATIONS
9.1. TECHNICAL FEATURES
TRMS AC/DC Voltage Phase-Neutral / Phase-Ground – Single phase / Three phase systems
Range Accuracy Resolution Input impedance
0.0  600.0V (0.5%rdg+2dgt) 0.1V 10M 
Max crest factor = 2
Voltage values < 2.0V are considered zero by meter
Meter is connectable with external VT with ratio selectable from 1
 3000
TRMS AC/DC Voltage Phase-Phase – Three phase systems
Range Accuracy Resolution Input impedance
0.0  1000.0V (0.5%rdg+2dgt) 0.1V 10M 
Max crest factor = 2
Voltage values < 2.0V are considered zero by meter
Meter is connectable with external VT with ratio selectable from 1
 3000
Voltage Anomalies Phase-Neutral – Phase-Phasr Single phase / Three phase 3-wire and 4-wire systems
Range
Voltage
Accuracy
Time Accuracy
(50/60Hz)
Voltage Resolution
Time Resolution
(50/60Hz)
0.0  600.0V
(1.0%rdg+2dgt) 10ms 0.2V 10ms
0.0  1000.0V (P-P)
Max crest factor = 2
Voltage values < 2.0V are considered zero by meter
Meter is connectable with external VT with ratio selectable from 1
 3000
Selectable threshold from
1% to 30%
TRMS AC Current with Standard STD transducer clamp
Range Accuracy Resolution Input impedance Overload protection
0.0 1000.0mV (0.5%rdg+0.06%FS) 0.1mV 510k  5V
Measure performed with voltage output =1VAC with nominal current measured by clamp
Max crest factor = 3
Current values < 0.1% of full scale (FS) are considered zero by meter
TRMS AC Current with Flex transducer clamp – Range 300A
Range Accuracy Resolution Input impedance Overload protection
0.0  49.9A (0.5%rdg+0.24%FS)
0.1A 510k  5V
50.0  300.0A (0.5%rdg+0.06%FS)
Measurements performed with HTFLEX33 flexible clamp
Max crest factor = 3
Current values < 1A are considered zero by meter
TRMS AC Current with Flex transducer clamp – Range 3000A
Range (*) Accuracy Resolution Input impedance Overload protection
0.0  3000.0A (0.5%rdg+0.06%FS) 0.1A 510k  5V
Measurements performed with HTFLEX33 flexible clamp
Max crest factor = 3
Current values < 5A are considered zero by meter
Power – Single phase / Three phase systems (@ Cos >0.5 and Vmis>60V, clamp type STD)
Parameter
[W, VAr, VA]
Full Scale
Clamp (FS)
Range
[W, VAr, VA]
Accuracy
Resolution
[W, VAr, VA]
Active Power
Reactive Power
Apparent Power
FS  1A
0.0  999.9
1.000  9.999k
(1.0%rdg+6dgt)
0.1
0.001k
1A< FS  10A
0.000  9.999k
10.00  99.99k
0.001k
0.01k
10A< FS  100A
0.00  99.99k
100.0  999.9k
0.01k
0.1k
100A< FS  3000A
0.0  999.9k
1.000  9.999M
0.1k
0.001M
For STD clamp
Vmis = voltage correspondent to power measurement
FS = Full scale clamp