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SINGLE PHASE PRECISION POWER ANALYZER


LMG95 Single Phase Precision Power Meter Analyzer
Measurements on switching power supplies, AC/DC motors and generators, electronic and conventional transformers, ballasts, PWM frequency inverters, ultra-sonic generators, ferromagnetic core losses, lighting, dielectric barrier discharge lamps, low and high pressure discharge lamps, calibration reference for power and energy.
The LMG95 Single Phase Precision Power Meter Analyzer is an outstanding product in the LMG Series of proven precision power measuring devices. Highly accurate continuous and gap-free signal measurement and processing, ergonomic operation and presentation of the results, interfaces with high data rates for efficient system applications – these are the performance features which distinguish the LMG95.



Single Phase Precision Power Meter Analyzer
 
Our Price: Contact us for pricing
Phone: 253-927-6186
866-318-6186
Fax: 253-927-6189
email: sales@hotektech.com
  • Harmonics and interharmonics up to the 99th harmonic resp. up to 99 interharmonics

  • Transient function

  • Analog and digital in/outputs

  • External shunt voltage input

  • PC interfaces, memory-card slot

  • Graphical monochrome display to show 4 to 8 measured values, wave form, diagrams of calculated values and bar charts

  • Ergonomic user friendly interface

  • Formula editor

  • LabVIEW driver

Isolated measurement inputs with direct measurements ranges up to 600V (1600Vpeak) and
20A (960Apeak for the measurement of inrush currents) and the input for current measurements using a shunt or other transducer measure the incoming measurement signals exactly and without any aberrations.

With a basic accuracy of 0.03%, this is the most precise instrument in its class and it is therefore used as a reference device for power meters, power measurement transformers and TRMS-meters for current and voltage.

The harmonic analysis in full compliance with the EN61000-3-2 standard is already available in the basic unit. The flicker meter in compliance with EN61000-4-15 for the measurement of flicker (voltage variations) is available as an option. These two functions considerably extend the possible applications of the LMG95 in the laboratory area as well. If suitable stable voltage sources are available, tests for CE compliance can be performed in accordance with EN61000-3-2/-3.

TECHNICAL DATA

Voltage measuring
 ranges

Rated Range
value /V
Permissible trms value /V
Permissible peak value for full scale /V
 



6

7.2

12.5




12.5

14.4

25




25

30

50




60

60

100




130

130

200




250

270

400




400

560

800




600

720

1600
       
Also available with ranges:
25mV...3mV,
100mV...12V
400mV...60V
12V...650V (3200Vpk)
Overload capability
Input resistance
1500V for 1s
1MΩ, 20pF
Current measuring ranges
Rated range value /A
Permissible trms value /A
Permissible peak value
for full scale /A
 



0.15

0.3


0.469




0.3

0.6


0.938




0.6

1.3


1.875




1.2

2.6


3.75




2.5

5.2


7.5




2.5

5.2


7.5




10

21


30




20

21


60




120

21


120




240

21


240




480

21


480




960

21


960
Also available with ranges:
0.6mA...80mA
10mA...1200mA
40mA...5A
Overload capability
Input resistance
160A for 1s
5mΩ
Voltage inputs for current measuring
with shunt / transducer

Rated range value /V
Permissible trms value /V
Permissible peak value
for full scale /V
 





0.03

0.06


0.0977






0.06

0.13


0.1953






0.12

0.27


0.3906






0.25

0.54


0.7813






0.5

1


1.563






1

2


3.125






2

4


6.25






4

8


12.5
Overload capability
Input resistance
250V for 1s
100kΩ
Measuring range selection Auto, manual or remote controlled
Isolation Current and voltage path are isolated against each other and may float against earth with 600V.
Testing voltage 3250V
Measuring method Simultaneous sampling of the current and voltage inputs and A/D conversion of the instantaneous values (100kHz).
Memory for up to 2.106 sampling values.
Measuring cycle, synchronization,
averaging
For measurements of the trms values for current, voltage and active power the measuring cycle time is adjustable in the range of 50ms to 60s. The synchronization can be performed on the measuring signal, the fundamental harmonic, the envelope, the mains or an external signal. Single measuring with stop after one or more cycles are possible, averaging over 1 to 16 cycles.
Measuring accuracy (Standard version)
Measuring
Accuracy

±(% of measuring value + % measuring range)

DC 0.05..15Hz 15...45Hz 45...65Hz 65Hz...1kHz 1...3kHz 3...15kHz 15...50kHz
Voltage 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.03+0.06 0.1+0.2 0.5+1.0
Current 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.03+0.06 0.1+0.2 0.5+1.0
Shut Voltage Input 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.03+0.06 0.1+0.2 0.5+1.0
Active Power 0.03+0.06 0.035+0.04 0.025+0.03 0.015+0.02 0.025+0.03 0.05+0.06 0.2+0.2 0.5+1.0
Measuring accuracy (500kHz version)
Accuracy

±(% of measuring value + % measuring range)

DC 0.05..15Hz 15...45Hz 45...65Hz 65Hz...1kHz 1...3kHz 3...15kHz 15...100kHz 100...200kHz 200...300kHz 300...400kHz 400...500kHz
Voltage 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.25+0.05 0.03+0.06 0.1+0.2 0.5+1.0 1.0+2.0 3.0+3.0 4.0+4.0
Current 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.25+0.05 0.03+0.06 0.1+0.2 0.5+1.0 1.0+2.0 3.0+3.0 4.0+4.0
Shut Voltage Input 0.02+0.06 0.02+0.04 0.015+0.03 0.01+0.02 0.015+0.03 0.25+0.05 0.03+0.06 0.1+0.2 0.5+1.0 1.0+2.0 3.0+3.0 4.0+4.0
Active Power 0.03+0.06 0.035+0.04 0.025+0.03 0.015+0.02 0.025+0.03 0.04+0.05 0.05+0.06 0.2+0.2 1.0+1.0 2.0+2.0 6.0+3.0 7.0+4.0
 
Measuring accuracy of cosφ
 
Accuracies based on 1. sinusoidal voltage and current
2. ambient temperature 23 °C
3. warm up time 1h
4. definition of power range as the product of current and voltage range, 0 ≤ |λ|≤ 1 (λ=Power factor=P/S)
5. calibration interval 12 month
Other values All other values are derived from the values for current, voltage and active power. Accuracies for the derived values depends on the functional relation (e.g.  S = I * U,  ΔS/S = ΔI/I + ΔU/U)
Internal time base ±25ppm at 23°C
Frequency measuring 0.05Hz...500kHz ±0.01% of measuring value, measuring channel selectable.
Display of measured and computed values Representation
Voltage/current

 

Power
Impedance

With standard abbreviation of measured magnitudes, numeral values 6 digits (0...999999), with sign, decimal point and unit (e.g. Itrms 0.73851mA), 1 to 8 values can be displayed simultaneously, selectable via default or user defined menus trms value, peak values (min, max, pp), rectified value (rect), mean value (dc), trms value of ac component (ac), form factor, crest factor

Active power (P), reactive power (Q), apparent power (S), phase angle (j), power factor (l)
Amount (Z), real- und imaginary part of resistor in serial equivalent circuit
Integrated values depending on
the measuring time
Energy, Charge
Date and time, measuring time
Adjustable
parameters

The integration can be controlled manually, automatically using start and stop times, via external trigger or remote controlled via computer interface.


Active energy (Ep), reactive energy (Eq), apparent energy (Es), charge (q)
Current date (day, month, year) with time (hour, minutes, seconds), accu buffered real time clock, start time for measurement, running measuring time, on-time, each with days, hours, minutes, seconds

Scaling factors for external shunt, current and voltage transducer
Synchronization Synchronization is made on the periodicity of the measured signal. Periodicity can be determined by the signals u(t), i(t), p(t), u˛(t), i˛(t), each of them can be adapted with selectable filters. By this stable displays also with pulse width modulated signals (e.g. frequency inverter) and amplitude modulated signals (e.g. electronic ballast). Synchronization also by „Line“ and „External“
Scope function Graphical representation of sampled values (waveform of the signal)
Plot function Time diagram of calculated values, e.g. trms value and power
Harmonic analysis
CE-Hrm
Analysis of current and voltage up to the 40th harmonic (total of 41 with DC component),
fundamental in the range 45Hz to 65Hz.
Analyzer in accordance with EN61000-4-7 with evaluation in full compliance with EN61000-3-2
Harmonic analysis HRM100 Analysis of current, voltage and effective power up to the 99th harmonic (total of 100 with DC component), fundamental in the range 0.1 Hz to 1.2 kHz; with adjustable divider (1...50), a new fundamental can be set as a reference, for example to determine interharmonics
Flicker measuring Flicker meter in accordance with EN61000-4-15 with evaluation in accordance with EN61000-3-3
Transients – monitoring
and storage
Storing and graphical displaying of transients with a resolution of 10µs. Storing depth is 4 Millions sample values, selectable recording duration from 0.05 to 60 seconds. Adjustable pre-trigger, different possibilities of triggering
Computer interface
Remote control
Output data
Transfer rates
Interfaces: RS232 and IEEE488.2, only one interface can be used at the same time

All functions can be remote controlled
Output of all displayable data possible, data formats of all interfaces are the same, SCPI command set
RS232: max. 115200 Baud, IEEE488.2: max. 1MByte/sec
Printer interface Parallel PC-printer-interface with 25 pin SUB-D socket
for printing of values tables and graphics on needle, ink or laser printer
Memory module For PCMCIA memory cards, data logging of measuring and sample values
Processing signal interface 25 pin SUB-D socket:
4 analog inputs for registration of auxiliary quantities (16bit, ±10V)
4 analog outputs for output of any measured or computed values in real time (16bit, ±10V)
4 digital inputs for registration of status
4 digital outputs to signal states and alarms
1 input for frequency (0.1Hz...500kHz) and direction (e.g. of motors)
1 power supply output 12V/50mA
Inputs and outputs are isolated group wise against each other and against the other electronics (testing voltage 500V)
Other data
External synchronization
/trigger
Auxiliary RS232 interface
Auxiliary power supply output
Dimensions
/weight
Protection class

Isolated interface for external control of measurement cycle and integration times, outputs for status signals about the actual measuring
For installing options, firmware and for instrument diagnosis
+15V/0.4A and -15V/0.2A for external transducers



Desktop case, (w)320mm x (h)147mm x (d)274mm, -19"-cassette 84PU, 3HU, (d)274mm,
about 5.5kg
EN61010 (IEC1010, VDE0411), protection class I, Over voltage class III
Other data
Electromagnetic compatibility
Protection system
Operating
/storage temperature
Climatic class
Power supply

IEC61000 (EN61000), EN50081, EN50082
IP20 in accordance with DIN40050




0...40°C, -20...50°C
KYG in accordance with DIN40040
85...264V, 47...440Hz, about 30W
   

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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