U1451A Datasheet, PDF (13/20 Pages) Keysight Technologies – Insulation Resistance Testers

13 | Keysight | U1450A/U1460A Insulation Resistance Testers - Data Sheet
U1451A/U1452A/U1452AT resistance speciications
Resistance specifications with accuracy of ± (% of reading + number of least significant digit)
Function
Resistance¹
Range
600 Ω
6 kΩ
60 kΩ
600 kΩ
6 MΩ
60 MΩ
Resolution
0.1 Ω
0.001 kΩ
0.01 kΩ
0.1 kΩ
0.001 MΩ
0.01 MΩ
Accuracy
U1451A
1.5% + 3
1.5% + 3
1.5% + 3
1.5% + 3
2.0% + 3
2.5% + 3
U1452A/U1452AT
1.0% + 3
1.0% + 3
1.0% + 3
1.0% + 3
1.2% + 3
2.0% + 3
1. The following statements are true for resistance measurements:
– Overload protection: 1000 VRMS for short circuits with < 0.3 A current
– Maximum open voltage is < +2.8 V
– The built-in buzzer beeps when the resistance measured is less than 30 Ω ± 15 Ω
– The accuracy is speciied after the Null function is used to subtract the test lead resistance and thermal effect (by shorting the test leads)
U1453A/U1461A resistance/audible continuity speciications
Resistance/Audible continuity specifications with accuracy of ± (% of reading + number of least significant digit)
Function
Resistance¹
Range
600 Ω²
6 kΩ
60 kΩ
600 kΩ
6 MΩ³
60 MΩ^{3, 4}
Resolution
0.1 Ω
0.001 kΩ
0.01 kΩ
0.1 kΩ
0.001 MΩ
0.01 MΩ
Accuracy
0.5% + 2
0.5% + 2
0.5% + 2
0.5% + 2
0.8% + 2
1.5% + 3
Continuity threshold
12 ± 4 Ω
0.06 ± 0.02 kΩ
0.33 ± 0.17 kΩ
3.6 ± 1.8 kΩ
0.13 ± 0.07 MΩ
0.13 ± 0.07 MΩ
1. The following statements are true for resistance measurements:
– Overload protection: 1000 VRMS for short circuits with < 0.3 A current
– Maximum open voltage is < +2.1 V
– The built-in buzzer beeps when the resistance measured is less than 12 Ω ± 4 Ω. The tester can capture intermittent measurements longer than 1 ms.
2. The accuracy of the 600 MΩ range is speciied after the Null function is used to subtract the test lead resistance and thermal effect (by shorting
the test leads)
3. For the ranges of 6 MΩ and 60 MΩ, the RH is speciied for < 60% @ 30 °C
4. The temperature coeficient of the 60 MΩ range is 0.1 × (speciied accuracy)/°C (from –40 to 18 °C or 28 to 55 °C)
U1453A/U1461A diode test speciications
Diode specifications with accuracy of ± (% of reading + number of least significant digit)
Function
Diode¹
Range
1 V²
Auto³
Resolution
0.001 V
0.001 V
Accuracy
2% + 3
2% + 3
Test current
0.21 mA
0.21 mA
1. The following statements are true for diode tests:
–
–
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with < 0.3 A current
voltage measured is
less
than
0.04
±
0.02
V
and
beeps
once
for
forward-biased
diode
or
semiconductor junctions measured between 0.3 V and
0.8 V (0.3 V ≤ reading ≤ 0.8 V)
2. Open voltage for diode: < +2.1 VDC
3. Open voltage for Auto-diode: < +2.1 VDC and > –2.1 VDC