Class-A compliance for the most demanding power quality tests

The Fluke 1760 Three-Phase Power Quality Recorder is fully compliant to IEC 61000-4-30 Class-A, for advanced power quality analysis and consistent compliance testing. Designed for analysis of utility and industrial power distribution systems, in medium- and low-voltage networks, this power quality monitor provides the flexibility to customize thresholds, algorithms, and measurement selections. The 1760 power recorder captures the most comprehensive details on user-selected parameters.

Applications

Detailed disturbance analysis – Perform high-speed transient analysis and uncover root cause of equipment malfunction for later mitigation and predictive maintenance. The fast transient option, with its 6000 V measurement range, allows capture of very short impulses such as lightning strikes.

Class-A quality-of-service compliance – Validate incoming power quality at the service entrance. Thanks to Class A compliance, the Fluke 1760 allows undisputable verification.

Event correlation at multiple locations – Utilizing GPS time synchronization, users can quickly detect where a fault occurred first, either inside or outside the facility.

Galvanic separation and DC coupling – Allows complete measurements on dissimilar power systems. For example troubleshoot UPS systems by simultaneously recording the battery voltage and power output.

Power quality and power load studies – Assess baseline power quality to validate compatibility with critical systems before installation and verify electrical system capacity before adding loads.

There are four Fluke 1760 models to select from:

Product Feature	Fluke 1760 Basic	Fluke 1760TR Basic	Fluke 1760	Fluke 1760TR
Power quality statistics according to EN50160	●	●	●	●
Voltage event list (dips, swells and interruptions)	●	●	●	●
Continuous recording of:
Voltage	●	●	●	●
Current	●	●	●	●
Power P, Q, S	●	●	●	●
Power factor	●	●	●	●
kWh	●	●	●	●
Flicker	●	●	●	●
Unbalance	●	●	●	●
Frequency	●	●	●	●
Voltage and current harmonics to the 50th / Interharmonics	●	●	●	●
THD	●	●	●	●
Mains signaling	●	●	●	●
Triggered recordings	●	●	●	●
Online mode (Oscilloscope, transients and events)	●	●	●	●
Fast transient analysis up to 10 MHz		●		●
4, 600V voltage probes			●	●
4 dual-range flexible current probes (1000 A / 200 A ac)			●	●
GPS time sync receiver			●	●
Memory	2 GB Flash memory

Overview of Measurement Functions
Statistical Evaluation	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
Noise	Noise voltage, input short-circuited: < 40 µV
DC	± (0.2% rdg + 0.1% sensor)