Statistical Evaluation: Power quality statistics according to EN50160 and DISDIP tables like ITIC, CEBEMA, ANSI Continuous Recording: Fluke 1760 records rms values together with corresponding minimum and maximum values for:
- Voltage
- Current
- Power P, Q, S
- Power Factor
- kWh
- Flicker
- Unbalance
- Frequency
- Harmonics/Interharmonics
continuously with the following time aggregations:
Day
10 min
Free Interval, e.g.: 15 min, 2h Triggered Recordings: rms: Aggregation time is adjustable between 10 ms (1/2 cycle), 20ms (1 cycle), 200ms (10/12 cycles) or 3 sec (150/180 cycles).
Calculating rms values, Harmonics and Interharmonics is performed synchronous to the power frequency. Basic aggregation for harmonics and interharmonics is 200ms
Oscilloscope: Sample rate is 10.24 kHz for all 8 channels
Fast Transients: Sample rate is selectable from 100 kHz to 10 MHz for channel 1-4 FFT of Fast Transients Mains Signalling: Phases and N-conductor, Voltage and current Online Mode: Variable refresh rate. This feature allows verification of instrument set up and delivers a quick overview of oscilloscope, transients and events. Intrinsic uncertainty: refers to reference conditions and is guaranteed for two years Quality system: developed, manufactured as per ISO 9001: 2000 Operating temperature range:: 0 ?C to +50 ?C; 32 ?F to +122 ?F Working temperature range:: -20 ?C to +50 ?C; -4 ?F to +122 ?F Storage temperature range:: 20 ?C to +60 ?C; -4 ?F to 140 ?F Reference temperature:: 23 ?C ? 2 K; 74 ?F ? 2 K Climatic class:: B2 (IEC 654-1), -20 ?C to +50 ?C; -4 ?F to +122 ?F Max. operating altitude:: 2000 m: max. 600 V CAT IV*, power supply: 300 V CAT
2000 m: max. 600 V CAT IV*, power supply: 300 V CAT III 5000 m: max 600 V CAT III*, power supply: 300 V CAT II
* depending on sensor Environment temperature:: 23 ?C ? 2 K ; 74?F ? 2 K Power supply:: 230 V ? 10 % Power frequency:: 50 Hz / 60 Hz Signal:: declared input voltage Udin Averaging:: 10 minute intervals Housing: insulated, robust plastics housing Emission:: Class-A as per IEC/EN 61326-1 Immunity:: IEC/EN 61326-1 Range:: AC: 83 V to 264 V, 45 to 65 Hz
DC: 100 V to 375 V Safety:: IEC/EN 61010-1 2nd edition
300 V CAT III Power consumption:: max. 54VA Battery pack:: NIMH, 7.2 V, 2.7 Ah
In case of a power supply failure an internal battery maintains the supply for up to 40 minutes. Afterwards, or in case of discharged accumulators the Fluke 1760 is turned off and continues the measurements with the latest settings as soon as the supply voltage returns. The battery can be replaced by the user. : Fluke 1760 features LED indicators for the status of the 8 channels, phase sequence, power supply (mains or accumulator), memory usage, time synchronization, and data transfer. Power LED:: ? Permanent light: normal power supply from mains.
? OFF: supply via internal accumulator in case of a power failure. Channel LEDs: 3-color LEDs per channel for:
? overload condition
? under load condition
signal level in nominal range Data memory: 2 GB Flash memory depending on model Memory model: Linear Interfaces: Ethernet (100MB/s), compatible to Windows? 98/ME/NT/2000/XP RS 232, external modem via RS 232 Baud rate for RS 232: 9600 Baud to 115 kBaud Dimensions: 325 mm x 300 m x 65 mm; 2.8 x 11.8 x 2.6 in. (H x W x D) Weight: appr. 4.9 kg; 10.8 lbs. (without accessories) Warranty: 2 years Calibration interval: 1 year recommended for Class-A, otherwise 2 years Range for 50 Hz systems: 50 Hz ? 15 % (42.5 Hz to 57.5 Hz) Range for 60 Hz systems: 60 Hz ? 15 % (51 Hz to 69 Hz) Resolution: 16 ppm Sampling frequency for 50 Hz power frequency: 10.24 kHz, The sampling rate is synchronized to mains frequency. Uncertainty for frequency measurements: 20 ppm Uncertainty of internal clock: 1s / day : Aggregation of the interval values as per IEC 61000-4-30 Class-A Min-, Max-values:: Half cycle, e.g.: 10 ms rms values at 50Hz Transients:: Sample rate 100 kHz to 10 MHz per channel Harmonics: as per IEC 61000-4-7:2002: 200 ms Flicker: as per EN 61000-4-15:2003: 10 min (Pst), 2 h (Plt) Number of inputs: 8 galvanically isolated inputs for voltage and current measurements. Sensor safety: up to 600 V CAT IV depending on sensor Basic safety: 300 V CAT III Nominal voltage (rms): 100 mV Range (peak value): 280 mV Overload capacity (rms): 1000 V, continuously Voltage rise rate: max. 15 kV / ?s Input resistance: 1 MO Input capacitance: 5 pF Input filter: Each channel is equipped with a passive low-pass filter, an anti-aliasing filter and a 16-bit A/D converter. All channels are sampled synchronously with a common quartz-controlled clock pulse.
The filters protect against voltage transients and limit the signal rise rate, reduce high frequency components and especially the noise voltage above half the sampling rate of the A/D converter by 80 dB, thus achieving very small measuring errors in an exceptionally large amplitude range. This is also valid under extreme operating conditions like transient voltages at the output of converters. |