AC voltage measurement |
Range |
500 V |
Resolution |
0.1 V |
Accuracy 45 Hz – 66 Hz |
0.8% + 3 |
Input impedance |
360 kΩ |
Overload protection |
660 V rms |
Continuity testing (RLO) |
Range (autoranging) |
20 Ω / 200 Ω / 2000 Ω |
Resolution |
0.01 Ω / 0.1 Ω / 1 Ω |
Open Circuit Voltage |
>4 V |
Insulation resistance measurement (RISO) |
Test voltages |
50-100-250-500-1000 V |
Accuracy of tTest voltage (at rated test current) |
+10%, -0% |
Test voltage |
50 V 100 V 250 V 500 V 1000 V |
Insulation resistance range |
20 MΩ /50 MΩ 20 MΩ / 100 MΩ 20 MΩ / 200 MΩ 20 MΩ / 200 MΩ / 500 MΩ 20 MΩ / 200 MΩ / 1000 MΩ |
Resolution |
0.01 MΩ / 0.1 MΩ 0.01 MΩ / 0.1 MΩ 0.01 MΩ / 0.1 MΩ 0.01 MΩ / 0.1 MΩ / 1 MΩ 0.01 MΩ / 0.1 MΩ / 1 MΩ |
Test current |
1 mA @ 50 kΩ 1 mA @ 100 kΩ 1 mA @ 250 kΩ 1 mA @ 500 kΩ 1 mA @ 1 MΩ |
Loop and line impedance (ZI) |
Range |
10 Ω / 0.001 Ω / High current mΩ mode |
Resolution |
0.01 Ω / 0.1 Ω / 1 Ω |
Prospective earth fault current, PSC test |
Range |
1000 A / 10 kA (50 kA) |
Resolution |
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 |
AC¹ G²,S³ |
Model 1664 |
A, AC, B5, S |
Notes |
¹Responds to AC ²General, no delay ³Time delay 4Responds to pulsed signal 5Responds to smooth DC signal |
Tripping speed test (ΔT) |
Current settings¹ |
10-30-100-300-500-1000 mA – VAR 10-30-100 mA |
Multiplier |
x ½, x 1 x 5 |
Measurement range |
RCD Type G |
310 ms 50 ms |
RCD Type S |
510 ms 160 ms |
Notes |
¹1000 mA type AC only 700 mA maximum type A in VAR mode VAR mode not available for type B. |
RCD/FI-Tripping Current Measurement/Ramp Test (IΔN) |
Current range |
30% to 110% of RCD rated current¹ |
Step size |
10% of IΔN² |
Dwell time |
Type G |
300 ms/step |
Type S |
500 ms/step |
Measurement accuracy |
±5% |
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 ²5% for Type B |
Notes |
¹30% to 150% for Type A IΔN > 10 mA 30% to 210% for Type A IΔN = 10 mA 20% to 210% for Type B |
Earth Resistance Test (RE) |
Range |
200 Ω / 2000 Ω |
Resolution |
0.1 Ω / 1Ω |
Frequency |
128 Hz |
Output Voltage |
25 V |
Phase Sequence Indication |
Icon |
Phase Sequence indicator is active. |
General Specifications |
Size (L x W x H) |
10 x 25 x 12.5 cm |
Weight (incl. batteries) |
1.3 Kg |
Battery size, quantity |
Type AA, 6 ea. |
Sealing |
IP-40 |
Safety |
Complies with EN61010-1 Ed 2.0 (2001-02), UL61010, ANSI/ISA –s82.02.01 2000 and CAN/CSA c22.2 No. 1010 2nd edition |
Overvoltage |
CAT III / 500V; CAT IV 300V |
Performance |
EN61557-1 to EN61557-7 Second Edition and EN61557-10 Second Edition |