3.3
Outputs measurement
The display shows the following:
•
The High AC current
•
The High DC current
•
The High AC voltage
•
The corresponding output current
All of them are shown in their evolution during the test.
The display shows also the selected measurement inputs.
Type of measurement
True rms for AC outputs
DC component for DC outputs
Metering temperature coefficient
±0.05%/°C of the value
±0.02%/°C of the range
Table 31 – Outputs measurement
3.4
External inputs measurement
The following measurements are performed by all the test sets of the family. It is possible to meter the current and the
voltage of an external (or internal) generator. Four metering inputs are available, isolated between them and with
respect to the rest of the test set:
•
AC or DC current, up to 10 A, with two 4 mm safety banana sockets. This input is also protected by a FF10A fuse
•
AC voltage, with two independent connections, in alternative:
•
High range, up to 300 V AC (four ranges with automatic selection), with two 4 mm safety banana
sockets
•
Low range, up to 3 V AC (three ranges with automatic selection), with a shielded connector
•
DC voltage, up to 10 V DC (four ranges with automatic selection), with two 4 mm safety banana sockets. On the
same sockets is also available an Ohmmeter, for the 2-wire resistance measurements from 0.1÷20 kΩ
Above inputs allow measuring CT or VT outputs or any other source. The selected input is shown in the front panel with
a LED. All inputs have two or more metering ranges, with automatic range selection.
The following table list the resolution and accuracy:
Input
Range
Impedance
Resolution
Typical error
Guaranteed error
[<%rdg]
[<%rg]
[±%rdg]
[±%rg]
AC current
10 A
1 A
0.1 Ω
1 mA
0.1 mA
< 0.05%
< 0.05%
±0.10%
±0.10%
DC current
10 A
1 A
0.1 Ω
1 mA
0.1 mA
< 0.03%
< 0.08%
±0.05%
±0.15%
High AC voltage range
(sockets)
300 V
30 V
3 V
300 mV
500 kΩ
15 mV
1.5 mV
0.15 mV
0.015 mV
< 0.05%
< 0.05%
< 0.10%
< 0.15%
< 0.05%
±0.10%
±0.10%
±0.20%
±0.30%
±0.1%
Low AC voltage range
(connector)
3 V
300 mV
30 mV
10 MΩ
150 μV
30 μV
3 μV
< 0.03%
< 0.08%
< 0.1%
< 0.05%
< 0.08%
< 0.25%
±0.05%
±0.15%
±0.2%
±0.10%
±0.15%
±0.50%
DC voltage
10 V
1 V
100 mV
10 mV
500 kΩ
400 μV
75 μV
4 μV
0.4 μV
< 0.03%
< 0.03%
< 0.05%
< 0.05%
< 0.08%
< 0.08%
< 0.10%
< 0.15%
±0.05%
±0.05%
±0.10%
±0.10%
±0.15%
±0.15%
±0.20%
±0.30%
Table 32 - Resolution and accuracy
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