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Fluke 1743, 1744 General Specifications, Flicker, Current Logging Values, Events Dips, Swells, Interruptions, RMS Logging Slow Voltage Variations

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1744/1743 Users Manual

General Specifications

RMS Logging Slow Voltage Variations

Logging values: Mean value	RMS values averaged over interval length
Min, Max values	Averaging with selectable averaging time from
	0.5 periods to 5 s
Max value	Max 10 ms RMS value per interval
Min value:	Min 10 ms RMS value per interval

Current Logging Values

Mean value	RMS values averaged over interval length
Max value	Highest RMS value per interval

Events Dips, Swells, Interruptions

Limit value	Variable
	Lower limit: 0 to 95% VN
	Upper limit: 105 to 120% VN
	Set in PQ Log
Range	0 to VI + 20%
Logging value	½ period RMS value
Operating uncertainty	< 2% of VI
Response time	½ line power period

Flicker

Logging value	Flicker severity (Pst / Plt) according to
	IEC 61000-4-15
Intrinsic uncertainty Pst	< 5% of m. v
Measuring range Pst	0.4 to 4

Contents

Page Table of Contents 1744/1743 Contents Page List of Tables Page List of Figures Page Introduction Information and PC Software CD Logger Power Supply Power Interruptions Introduction to the Logging Functions Power Quality Logger Symbols Safety Instructions W X Warnings Qualified Personnel Standard Equipment and Optional Accessories Page Features Page Power Network Configurations Working with Logged Data Using the Logger Logging Jobs Preparing the Logger for Use 2.Connect the RS232 interface cable to the serial port of your PC Test Leads – Markings Connecting Current Probes Connecting the Logger Page Page Connections in 3-Phase 4-Wire(Wye) Systems Connections in 3-Phase 3-Wire(Delta) Systems Figure 5 shows the connections for logging 3-phase 3-wire(Delta) systems The test lead N can be left open, or connected to ground potential Connections for Single-PhaseLogging Figure 6 shows the connections for logging single-phasesystems Connections for Medium-VoltageNetworks Phase-PhaseDelta Logging Phase-Ground, Wye-Logging Logging with Two Voltage Converters and Two Current Transformers Logging Time-activated Immediate job: Completing the Logging Job For switch-activated Methods of Logging Measuring Ranges Resolution Accuracy Voltage Variations Min/Max Values Voltage Interruptions Voltage Harmonics Current Harmonics THDV THDI and THDI (A) = ∑ In THDI 12Pst Plt = 3 ∑ 12i=1 Power Logger Parameters with Function P PF = λ tanϕ tanϕ total Logger Parameters with Function A Pn = Vn .In .cosϕ n Page tanϕ ⋅ ∑ Ph1 Sh1 cosϕ Sh1 Qh1 cosϕ 1total Maintenance Lithium Battery Disposal Technical Specifications Logging Parameters – Overview Technical Specifications Maximum Number of Intervals for Logging Function P General Information Environmental Specifications EMC Power Supply Measurement Input Voltage Current Input with Flexi Set Current Input for Clamp General Specifications Power (Logging Functions A, P only) P, S, |P| Harmonics Vm, Im, THDV, THDI per IEC/EN 61000-4-7,class B Statistics Analysis of logging data Logging Function P Logging Function A – “All” parameters Applications PQ Log PC Application Software Online Test ASCII Export Timeplot diagram UNIPEDE DISDIP Table Cumulative Frequency – Harmonics Index