1652C/1653B/1654B
Users Manual
52
No Trip and Hi Current Modes RCD/FI
Mains Input Voltage Range 100 - 500 V ac (50/60 Hz)
Loop Impedance: phase to earth Input Connection (soft key selection)
Line impedance: phase to neutral
Limit on Consecutive Tests Automatic shutdown when internal
components are too hot. There is also a
thermal shutdown for RCD tests.
Maximum Test Current @ 400 V 20 A sinusoidal for 10 ms
Maximum Test Current @ 230 V 12 A sinusoidal for 10 ms
Range Resolution Accuracy
[1]
10 Ω 0.001 Ω
Hi Current m mode: ±(2 % + 15 digits)
No Trip mode: ±(3 % + 6 digits)
20 Ω 0.01 Ω
Hi Current mode: ±(2 % + 4 digits)
No Trip mode: ±(3 %)
200 Ω 0.1 Ω
Hi Current mode: ±(2 %)
2000 Ω 1 Ω ±6 %
[2]
Notes
[1] Valid for resistance of neutral circuit <20 Ω and up to a system phase angle of 30 °. Test leads
must be zeroed before testing.
[2] Valid for mains voltage >200 V.
Prospective Earth Fault Current Test (PSC/I
K
)
Computation Prospective Earth Fault Current (PEFC/I
K
) or Prospective
Short Circuit Current (PSC/I
K
) determined by dividing
measured mains voltage by measured loop (L-PE)
resistance or line (L-N) resistance, respectively.
Range 0 to 10 kA or 0 to 50 kA
(See Power-On Options earlier in this manual)
Resolution Units
I
K
<1000 A 1 A
Resolution and Units
I
K
>1000 A 0.1 kA
Accuracy Determined by accuracy of loop resistance and mains
voltage measurements.
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