| Manufacturer part number (MPN) | 4884274 |
| Brand | Fluke |
| Category | Tools |
| Range | 500 V |
| Resolution | 0.1 V |
| Accuracy 45 Hz – 66 Hz | 0.8% + 3 |
| Input impedance | 360 kΩ |
| Overload protection | 660 V rms |
| Range (autoranging) | 20 Ω / 200 Ω / 2000 Ω |
| Open Circuit Voltage | >4 V |
| Test voltages | 50-100-250-500-1000 V |
| Accuracy of test 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 |
| Test current | 1 mA @ 50 kΩ 1 mA @ 100 kΩ 1 mA @ 250 kΩ 1 mA @ 500 kΩ 1 mA @ 1 MΩ |
| 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 Type | AC¹ G²,S³ |
| Model 1663 | A4, AC¹, G²,S³ |
| Model 1664 FC | A, AC, B5, S |
| Notes | ¹Responds to AC ²General, no delay ³Time delay ⁴Responds to pulsed signal ⁵Responds to smooth DC signal |
| Current settings¹ | 10-30-100-300-500-1000 mA – VAR 10-30-100 mA |
| Multiplier | x ½, x 1 x 5 VAR Mode Type B - 6, 60, 200 mA |
| Measurement range RCD Type G | 310 ms 50 ms |
| Measurement range RCD Type S | 510 ms 160 ms |
| Measurement range EV / RDC-DD | 6 mA - 10s 60 mA - 0.3s 200 mA - 0.1s |
| Current range | 30% to 110% of RCD rated current¹ <2 mA to 6 mA smooth DC³ |
| Step size | 10% of IΔN² Linear rising within 30 s |
| Dwell time RCD Type G | 300 ms/step |
| Dwell time RCD 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 |
| Frequency | 128 Hz |
| Output Voltage | 25 V |
| Icon | Phase Sequence indicator is active. |
| 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 EN/IEC 61010-1 and EN/IEC 61010-2-034 |
| Overvoltage | CAT III / 500V; CAT IV 300V |
| Performance | EN61557-1 to EN61557-7 and EN61557-10 |