POWER QUALITY ANALYZER
PQA450 Power Quality Analyzer

PQA450 Power Quality Analyzer.
Recording all important values needed for power quality analyzing, disturbance analysis in power networks, EN50160 power quality.
Power quality analyzing system PQA450 is universal 4-channel power meter LMG450 that is extended by the long term net data logger NDL5.
The NDL5 controls the measuring and stores the data. It can be configured via usual networks and the data can also be transferred. The PQA evaluation software is used for the comfortable display and
protocol.



PQA450 Power Quality Analyzer.
 
  • Power analyzer LMG450 with all its features
    extended by Network Data Logger NDL5

  • Graphical color display (LMG450),
    2x20 character display (NDL5)

  • Four independent current and voltage channels

  • Harmonic analysis up to the 99th. harmonic in
    voltage, current and power

  • Interharmonics and signaling voltages

For price and info please email sales@hotektech.com or call 253-927-6186 ext. 1

Related Instruments Power Analyzers
Power Converters

Digital Multimeters
Clamp-On Meters
  • Long time continuous recording of the recent measuring values up to 35 days

  • Uninterruptible power supply: if power supply fails, the instrument runs more than 15 minutes including the LMG450

  • Interface for RS232, IEEE488.2, USB, LAN and Modem (ISDN/POTS)

  • Configuration and data transfer via serial interface or Ethernet (LAN/WAN)

  • EN50160 power quality

Special features
  • Checks the correct connection to the supply mains by using the LMG450 display.

  • Continuous display of the recent measuring values

  • Measures without interrupting the secondary circuit of a current transformer by using the
    compensated current clamp. Highest accuracy, also at small currents

  • Monitors current, voltage and power simultaneously to determine the reason of disturbances

  • Power quality according EN50160

  • Additional analysis in time and frequency domain. Statistical analysis of the measuring results

  • Configuration and data transfer via serial interface or via Ethernet (LAN/WAN)

TECHNICAL DATA

Voltage measuring
ranges
Nominal value/V
Max trms value/V
Max peak for full scale
 

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
       
Overload strength
Input impedance
 
1500V for 1s
1.0MΩ, 20pF
Current measuring ranges
Nominal value/A
Max trms value/A
Max peak for full scale
 

0.6
1.3
1.875


1.2
2.6
3.75


2.5
5.2
7.5


5
10
15


10
18
30


16
18
60

 
 
 
     
Overload capability
Input impedance
18A permanent, 50A for 1s, 150A for 20ms
2mΩ
Isolation All direct current and voltage inputs of power measuring channels against each other and against earth isolated, max. 600V/CATIII
Voltage measuring ranges for external isolated current transducers.
Nominal values/mV
Max trms value/V
Max peak for full scale
 



0.12
0.15
0.25




0.25
0.3
0.5




0.5
0.6
1




1
1.2
2




2
2.5
4




4
5
8
   
Overload capability
Input impedance
250V for 1s
100kΩ, 10pF
Range selection Automatic, manual or remotely controlled
Measuring accuracy
Measuring
Accuracy

±(% of measuring value + % measuring range)

DC 1Hz...1kHz 1kHz...5kHz 5kHz...20kHz   45...65Hz AC Coupling
Voltage 0.2+0.2 0.1+0.1 0.2+0.2 0.3+042 0.05+0.05
Current 0.4+0.4 0.15+0.1 0.2+0.2 0.5+0.5 0.05+0.05
Active Power 0.5+0.5 0.2+0.1 0.3+0.2 0.5+0.5 0.07+0.08
Current via ext transducer 0.2+0.2 0.1+0.1 0.2+0.2 0.3+0.4 0.05+0.05
Active Power via ext transducer 0.3+0.3 0.15+0.1 0.3+0.2 0.6+0.5 0.07+0.08
Accuracies based on 1. sinusoidal voltages and currents
2. ambient temperature 23°C
3. warm up time 1h
4. definition of power range as the product of current and voltage measuring range, 0 ≤λ≤ 1
5. calibration interval 12 month
Other values All other values are derived from the values for current, voltage and active power values.
Accuracies for the derived values depends on relationship (e.g.  S = I * U,  ΔS/S = ΔI/I + ΔU/U)
Synchronization The measurement is synchronized on the signals period.
There is a choice to determine the period from u(t), i(t), p(t), further u²(t), i²(t) by using a settable filter . By this very stable readings are achieved, even at signals of pulse width modulated
frequency inverter and amplitude modulated electronic ballast, synchronization also with external signal or „Line“
Scope function Graphical representation of sampled values over the time
Plot function Time diagram of max. 4 readings, minimal resolution 50ms
Harmonic analysis prCE Harm Measuring of current and voltage with evaluation according to EN61000-3-2 (Pre-compliance)
Harmonic analysis Harm100 Analysis of current, voltage and power up to 99th harmonics (max. 10kHz), in total 100 harmonics, when including DC part. Fundamental in the range from 1Hz to 1.2kHz. By selectable integer divider (1...50) a new reference fundamental can be created as to detect interharmonics.
Flicker measuring Flicker Meter according to EN61000-4-15 with evaluation according to EN61000-3-3
Transients – monitoring and storing Storing and graphical displaying of transients with a resolution of 20µs. Storing depth is 1.4 Millions sample values/channel, selectable recording duration from 0.05 to 60 seconds. Adjustable pre-trigger, different possibilities of triggering
Computer interfaces
Remote control
Output data
Transfer rate
Interfaces: RS232 and IEEE488.2, only one interface can be used at the same time
All functions can be remote controlled, keyboard lock for measuring parameters available
Output of all readable data, data formats equal for all interface types, 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 measuring values, tables, graphics to matrix, inkjet or laser printers
Processing signal interface 25 pin SUB-D socket with (The option processing signal interface can be built in twice):
4 analog inputs for registration of process magnitudes (16Bit, ±10V, 1kHz)
4 analog outputs for output of readings or measured magnitudes (16Bit, ±10V, 100kHz)
4 digital inputs for registration of states (1kHz, ULOW<1V, UHIGH=4...60V/2.5mA)
4 digital outputs to signal states and alarms (open collector, output high max. 30V@100µA, output low max. 1.5V@100mA)
1 input for registration of frequency (0.1Hz...500kHz) and rotation direction of motors (ULOW<1V, UHIGH=4...10V, 1MΩ)
In- and outputs are isolated group wise against each other and against the other electronics (testing voltage 500V)
Other data
Display
Dimensions

Weight
Protection class
Electromagnetic compatibility
Protection system
Operating/storage temperature
Climatic class
Power supply

STN color display, 320 x 240 pixel, 5,7’’
- Bench case, W 320mm x H 147mm x D 307mm
- 19''-chassis, 84PU, 3HU, D 307mm
about 6,5kg
EN61010 (IEC1010, VDE0411), protection class I, overvoltage category III

EN50081, EN50082
IP20 in accordance to DIN40050

0...40°C, -20...50°C
KYG in accordance to DIN40040
85...264V, 47...440Hz, about 45W
Network Data Logger NDL5 – Technical Data
Capacity Hard Disk 20 GB or more
Power supply fail Instruments runs for >5s including the connected LMG
Display LCD, 2x20 characters, background light, for status information's
Interfaces RS232, LAN, Modem (ISDN and POTS)
Other data
Dimensions/Weight
Protection class
Electromagnetic compatibility
Protection/Operating-/Storage temperature
Climatic class
Power supply

Desktop: W 320mm x H 59mm x D 307mm, 19'’ plug in: 1HU, D 307mm / about 2kg each
EN61010 (IEC1010, VDE0411), protection class I, overvoltage category III

EN50081, EN50082

IP20 acc. DIN40050 / 0...40°C / -20...50°C
KYG nach DIN40040
85...264V, 47...440Hz, about 15W, max. 90 W with connected LMG

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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