LEM SATURN 100 plus Instrucciones De Uso página 57

Information for the tester
Insulation Resistance (R ISO )
Measuring method: Current-voltage measurement as per IEC 61557-2
Nominal voltage: < 520 V DC
Open-circuit voltage: approx. 520 V DC
Nominal current: 1 mA DC
Short-circuit current: < 12 mA DC
Permissible overload: max. U = 600 V AC (measurement is not started)
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Electrical safety is given during and functional safety after overload.
Measuring Range Resolution
0,01-0,05-9,99 MΩ 10 kΩ
0,1-0,5-99,9 MΩ 100 kΩ
k
Measuring time: while key „Start" is pressed, but max. 25 s
followed by automatic discharge of device undertest
DC voltages Range Resolution
1 520 V 1 V
Internal resistance: approx. 470 kΩ (L/N-PE)
serves as discharge resistance for any capacitances in the measuring circuit
Max. noise voltage: U = 50 V AC, at higher voltages no measurement is
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started!
Internal Loop-Network Resistance (R LOOP )
Measuring method: Lowering of voltage as per IEC 61557-3
Nominal voltage: 110/230/400 or. 127/220/380V sinusoidal
Functional range 101...152; 180...435 V
Frequency range: 46 - 65 Hz
Test current: dependent on mains voltage and network impedance
(Load resistance < 80 Ω; I ~ 3 A at 230 V, 5,5 A at 400 V)
≤ 18°; cos phi ≥ 0.95
Network impedance angle:
Additional error
for cos phi: < 0.95: ±...% of m.v. = (1-cos phi) . 100
Intrinsic error
± (8 % of m.v. + 1 digit)
Intrinsic error
± (8 % of m.v. + 1 digits)
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