Power quality statistics according to EN50160 and DISDIP tables like ITIC, CEBEMA, ANSI
Event List
Dips, swells and interruptions are detected and stored in the event list. Also any trigger which fires generates an event added to this list.
The Event list shows the exact time when the event occurred as well as the duration and magnitude. Sorting by several attributes of these events is possible to select one for further root cause analysis.
RMS values, transients and fast transients can be stored if a trigger fires.
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.
General Data
Intrinsic uncertainty
refers to reference conditions and is guaranteed for two years
Quality system
developed, manufactured as per ISO 9001: 2000
Environment conditions
Operating temp. range:
0 °C to +50 °C; 32 °F to +122 °F
Working temp. range:
-20 °C to +50 °C; -4 °F to +122 °F
Storage temp. 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 III 5000 m: max 600 V CAT III*, power supply: 300 V CAT II
* depending on sensor
Reference conditions
Environment temp.:
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
EMC
Emission:
Class-A as per IEC/EN 61326-1
Immunity:
IEC/EN 61326-1
Power supply
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.
Display
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
Signal Conditioning
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
Measurement intervals
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)
Measurement Inputs
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 / µs
Input resistance
1 MΩ
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.
Uncertainties
Uncertainty at reference conditions
Uncertainty including the voltage sensors is in compliance with IEC 61000-4-30 Class-A. All voltage sensors are suitable for DC up to 5 kHz
With Sensor 1000 V
0,1% at Udin = 480 V and 600 V P-N
Sensor 600 V
0,1% at Udin = 230 V P-N
Intrinsic uncertainty for harmonics
Class I as per EN 61000-4-7:2002
Reference conditions
23 °C ± 2 K < 60 % rH; 74 °F ± 2 K < 60 % rH
Warmed up instrument > 3h
Power supply: 100 V to 250 V ac
Temperature drift
100 ppm / K
Aging
< 0.05 % / year
Common mode rejection
> 100 dB at 50 Hz
Temperature drift
Change of amplification through temperature: < 0.005 %/K
Aging
Change of amplification due to ageing: < 0.04 %/year
