| General Data |
| Intrinsic error |
| Refers to the reference conditions and is guaranteed for two years |
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Refers to the reference conditions and is guaranteed for two years |
| Warranty |
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2 years |
| Recalibration interval |
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2 years recommended |
| Quality system |
| developed, designed, and manufactured according to DIN ISO 9001 |
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developed, designed, and manufactured according to DIN ISO 9001 |
| Reference conditions |
| 23°C ± 2 K; 74°F ± 2 K , Vm=230 V ± 10%, 50 Hz ± 0.1 Hz or 60 Hz ± 0.1 Hz | | Phase sequence | L1, L2, L3 | | Interval length | 10 minutes | | Wye connection | (L1, L2, L3 to N) | | Power supply | 88 V ... 265 V AC | |
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23°C ± 2 K; 74°F ± 2 K , Vm=230 V ± 10%, 50 Hz ± 0.1 Hz or 60 Hz ± 0.1 Hz |
| Phase sequence |
L1, L2, L3 |
| Interval length |
10 minutes |
| Wye connection |
(L1, L2, L3 to N) |
| Power supply |
88 V ... 265 V AC |
| Environment conditions |
| Working temp. range | -10°C to 55°C; 14°F to 131°F | | Operating temp. range | 0°C to 35°C; 32°F to 95°F | | Storage temp. range | -20°C to 60°C; -4°F to 140°F | | Reference temp. range | 23°C ± 2 K; 74°F ± 2 K | | Relative humidity | Fluke 1745: Class B2 acc. IEC 60654-1 Fluke 1744/43: Class C2 acc. IEC 60654-1 | |
| Working temp. range |
-10°C to 55°C; 14°F to 131°F |
| Operating temp. range |
0°C to 35°C; 32°F to 95°F |
| Storage temp. range |
-20°C to 60°C; -4°F to 140°F |
| Reference temp. range |
23°C ± 2 K; 74°F ± 2 K |
| Relative humidity |
Fluke 1745: Class B2 acc. IEC 60654-1 Fluke 1744/43: Class C2 acc. IEC 60654-1 |
| Housing |
| robust, fully insulated housing and accessories |
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robust, fully insulated housing and accessories |
| Protection type |
| Fluke 1745 | IP50 as per EN 60529 | | Fluke 1744/1743 | IP65 as per EN 60529 | |
| Fluke 1745 |
IP50 as per EN 60529 |
| Fluke 1744/1743 |
IP65 as per EN 60529 |
| Safety |
| IEC/EN 61010-1 600 V CAT III, 300 V CAT IV, pollution degree 2, double insulation |
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IEC/EN 61010-1 600 V CAT III, 300 V CAT IV, pollution degree 2, double insulation |
| Type test voltage |
| 5.2 kV rms, 50 Hz / 60 Hz, 5 s |
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5.2 kV rms, 50 Hz / 60 Hz, 5 s |
| EMC |
| Emission | IEC/EN 61326-1, EN55022 | | Immunity | IEC/EN 61326-1 | |
| Emission |
IEC/EN 61326-1, EN55022 |
| Immunity |
IEC/EN 61326-1 |
| Voltage and Current Measurement |
| Input voltage |
| Input range VI P-N | max 480 V AC | | Input range VI P-P | max 830 V AC | | Max. overload voltage | 1.2 VI | | Input range selection | By job programming | | Connections | P-P or P-N, 1- or 3-phase | | Nominal voltage VN | <= 999 kV with PTs and ratio</td> | | Input resistance | App. 820 kΩ per chan. Lx-N Single phase (L1 or A, L2 or B, L3 or C connected): app. 300 kΩ | | Intrinsic uncenrtainty | 0.1 % of VI | | Voltage transformer | Ratio: <999 kV / V<span class="PrdSub">I | | Ration selection | By job programming | |
| Input range VI P-N |
max 480 V AC |
| Input range VI P-P |
max 830 V AC |
| Max. overload voltage |
1.2 VI |
| Input range selection |
By job programming |
| Connections |
P-P or P-N, 1- or 3-phase |
| Nominal voltage VN |
<= 999 kV with PTs and ratio</td> |
| Input resistance |
App. 820 kΩ per chan. Lx-N Single phase (L1 or A, L2 or B, L3 or C connected): app. 300 kΩ |
| Intrinsic uncenrtainty |
0.1 % of VI |
| Voltage transformer |
Ratio: <999 kV / V<span class="PrdSub">I |
| Ration selection |
By job programming |
| Current input with Flexi Set |
| Input ranges II L1 or A, L2 or B, L3 or C, N: | 15 A / 150 A / 1500 A / 3000 A ac | | Measuring range | 0.75 A 3000 A ac | | Intrinsic uncertainty | < 2 % of I<span class="PrdSub">I | | Position influence | Max. ± 2 % of measured value - for distance conductor to meas. head > 30 mm | | Stray field influence | < ± 2 A ac for Iext=500 A ac and distance to measuring head > 200 mm | | Temperature coefficient | < 0.05 % / K</td> | | Current transformer | Ratio <= 999 kA / I<span class="PrdSub">I | | Ratio selection | By job programming | | Connection | 3-phase, 3-phase +N, 2 phase L1 or A and L3 or C (2 W-meter-method) 7 pole connector | |
| Input ranges II L1 or A, L2 or B, L3 or C, N: |
15 A / 150 A / 1500 A / 3000 A ac |
| Measuring range |
0.75 A 3000 A ac |
| Intrinsic uncertainty |
< 2 % of I<span class="PrdSub">I |
| Position influence |
Max. ± 2 % of measured value - for distance conductor to meas. head > 30 mm |
| Stray field influence |
< ± 2 A ac for Iext=500 A ac and distance to measuring head > 200 mm |
| Temperature coefficient |
< 0.05 % / K</td> |
| Current transformer |
Ratio <= 999 kA / I<span class="PrdSub">I |
| Ratio selection |
By job programming |
| Connection |
3-phase, 3-phase +N, 2 phase L1 or A and L3 or C (2 W-meter-method) 7 pole connector |
| Current input for clamp |
Input ranges II L1 or A, L2 or B, L3 or C, N: | 0.5 V nominal (for II) 1.4 Vpeak | | Intrinsic uncertainty | < 0.3 % of I<span class="PrdSub">I | | Max. overload | 10 V ac | | Input resistance | App. 8.2 kΩ | | Current transformer | Ratio Ω 999 kA / II | |
Input ranges II L1 or A, L2 or B, L3 or C, N: |
0.5 V nominal (for II) 1.4 Vpeak |
| Intrinsic uncertainty |
< 0.3 % of I<span class="PrdSub">I |
| Max. overload |
10 V ac |
| Input resistance |
App. 8.2 kΩ |
| Current transformer |
Ratio Ω 999 kA / II |
| Power systems |
| Delta, 2-Element Delta, Wye, Single Phase, Split Single Phase |
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Delta, 2-Element Delta, Wye, Single Phase, Split Single Phase |
| Logger |
| Power supply |
| Functional Range | 88 V to 660 V absolute, 50 Hz / 60 Hz 100 V to 350 V dc Internal fuse: 630 mA T | | Power consumption | 5 Watts | | Ride through | Fluke 1745: Internal battery for typ. > 5 hours ride through with intelligent power management Fluke 1743/44: 3 sec Capacitor | | Fuse | Power supply fuse can be replaced in service facility only. Supply can be connected in parallel to measuring inputs (up to 660 V) | |
| Functional Range |
88 V to 660 V absolute, 50 Hz / 60 Hz 100 V to 350 V dc Internal fuse: 630 mA T |
| Power consumption |
5 Watts |
| Ride through |
Fluke 1745: Internal battery for typ. > 5 hours ride through with intelligent power management Fluke 1743/44: 3 sec Capacitor |
| Fuse |
Power supply fuse can be replaced in service facility only. Supply can be connected in parallel to measuring inputs (up to 660 V) |
| Display, indicators |
| LEDs for status and voltage levels Fluke 1745: LC-display with backlight for voltage, current, active power, phase sequence. |
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LEDs for status and voltage levels Fluke 1745: LC-display with backlight for voltage, current, active power, phase sequence. |
| Memory |
| Capacity 8 MB Flash-EPROM | | Intervals | A function > 12000 intervals for > 85 days with 10 min intervals P function > 30000 intervals for > 212 days with 10 min intervals | | Events | > 13000 | | Memory model | linear, circular | |
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Capacity 8 MB Flash-EPROM |
| Intervals |
A function > 12000 intervals for > 85 days with 10 min intervals P function > 30000 intervals for > 212 days with 10 min intervals |
| Events |
> 13000 |
| Memory model |
linear, circular |
| Interface |
| RS 232, 9600...115 000 Baud, automatic Baud rate selection, 3-wire communication |
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RS 232, 9600...115 000 Baud, automatic Baud rate selection, 3-wire communication |
| Dimensions |
| Fluke 1745 | 282 mm x 216 mm x 74 mm (115in x 88in x 33in) | | Fluke 1743/1744 | 170 mm x 125 mm x 55 mm (69in x 51in x 22in) | |
| Fluke 1745 |
282 mm x 216 mm x 74 mm (115in x 88in x 33in) |
| Fluke 1743/1744 |
170 mm x 125 mm x 55 mm (69in x 51in x 22in) |
| Weight |
| Fluke 1745 | approx. 3 kg | | Fluke 1744/1743 | approx. 2 kg | |
| Fluke 1745 |
approx. 3 kg |
| Fluke 1744/1743 |
approx. 2 kg |
| Measurement |
| A/D converter | 16 bit, sample rate: 10.24 kHz | | Anti-aliasing filter | FIR-Filter, fc =4.9 kHz | | Frequency response | Uncertainty < 1 % of Vm for 40 Hz to 2500 Hz</td> | | Interval length | 1, 3, 5, 10, 30 s, 1, 5, 10, 15, 60 minutes | | Averaging time for Min/max values | ½, 1 mains period, 200 ms,1 , 3 , 5 s | | Time base | Resolution: 10 ms (at 50 Hz), deviation: 2s/day at 23°C; 74°F ± 2 K | |
| A/D converter |
16 bit, sample rate: 10.24 kHz |
| Anti-aliasing filter |
FIR-Filter, fc =4.9 kHz |
| Frequency response |
Uncertainty < 1 % of Vm for 40 Hz to 2500 Hz</td> |
| Interval length |
1, 3, 5, 10, 30 s, 1, 5, 10, 15, 60 minutes |
| Averaging time for Min/max values |
½, 1 mains period, 200 ms,1 , 3 , 5 s |
| Time base |
Resolution: 10 ms (at 50 Hz), deviation: 2s/day at 23°C; 74°F ± 2 K |