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Phase sequence indicaton
Icon Range Display
Phase Sequence indicator is active 100 to 500 V “1-2-3: or “3-2-1”
Insulation Resistance Measurement (RISO)
Test Voltages Accuracy of Test Voltage (at rated test current)
Model 1662 Model 1663, Model 1664 FC
+10 %, - 0 %
100-250-500-1000 V 50-100-250-500-1000 V
Test Voltage Insulation Resistance Range Resolution Test Current
50 V 20 MΩ/50 MΩ 0.01 MΩ/0.1 MΩ 1 mA @ 50 kΩ
100 V 20 MΩ/100 MΩ 0.01 MΩ/0.1 MΩ 1 mA @ 100 kΩ
250 V 20 MΩ/200 MΩ 0.01 MΩ/0.1 MΩ 1 mA @ 250 kΩ
500 V 20 MΩ/200 MΩ/500 MΩ 0.01 MΩ/0.1 MΩ/1 MΩ 1 mA @ 500 kΩ
1000 V 20 MΩ/200 MΩ/1000 MΩ 0.01 MΩ/0.1 MΩ/1 MΩ 1 mA @ 1 MΩ
Prospective Earth Fault Current, PSC Test
Range Resolution
1000 A/10 kA (50 kA) 1 A/0.1 kA
Computation: Prospective Earth Fault Current (PEFC) or Prospective Short Circuit Current (PSC) determined by dividing measured mains
voltage by measured loop (L-PE) resistance or line (L-N) resistance, respectively.
RCD testing, RCD types tested
RCD Type Model 1662 Model 1663, 1664 FC
AC
1
G
2
,S
3
A/F
4
, AC
1
, G
2
,S
3
A/F, AC, B/B+, G, S
Notes
1
Responds to AC.
2
General, no delay.
3
Time delay.
4
Responds to pulsed signal.
5
Responds to smooth DC signal
Trip time test (ΔT)
Current Settings
1
Multiplier
Measurement Range
RCD Type G RCD Type S
10-30-100-300-500-1000 mA – VAR x ½, x 1 310 ms 510 ms
10-30-100 mA x 5 50 ms 160 ms
1
1000 mA type AC only. 700 mA maximum type A in VAR mode, VAR mode not available for type B.
RCD trip current measurement/ramp test (Index
ΔN
)
Current Range Step Size
Dwell Time
Measurement
Accuracy
Type G Type S
30
% to 110 % of RCD rated current 10 % of Index
ΔN
300 ms/step 500 ms/step ± 5 %
Notes
30 % to 150 % for Type A I
ΔN
> 10 mA
30 % to 210 % for Type A I
ΔN
= 10mA
20 % to 210 % for Type B
Specified trip current ranges (EN 61008-1):
50 % to 100 % for Type AC
35 % to 140 % for Type A (>10 mA)
35 % to 200 % for Type A (≤10 mA)
50 % to 200 % for Type B
5 % for Type B
Earth resistance test (RE) Model 1664 FC and 1663 only
Range Resolution Frequency Output Voltage
200 Ω/2000 Ω 0.1 Ω/1Ω 128 Hz 25 V
1660 Series Multifunction Installation Testers Fluke Corporation 7