Development and production of systems for measurement and control
2. Device description
Power quality analyzer PLA34 is designed for measurement and monitoring of electrical parameters in 2, 3 and 4
conductor networks and in TN and TT grids. PLA34 power quality analyzer architecture is based on fast 32 bits RISC
microprocessor which provides high computing power to assure the device being fully according the norm IEC
61000-4-30 class S.
Parameter
L1 L2 L3 L4 L1-2 L2-3 L3-1 Σ
L1-L3
Σ
L1-L4
Max Min AVG Maxavg Measuring range Displaying range Accuracy
Phase voltage
●
●
●
●
●
●
●
●
10 ... 600 V
1 V ... 1 MV
±0,1 %
Line voltage
●
●
●
●
●
●
●
18 ... 1000 V
0 ... 1 MV
±0,1 %
Frequency
●
●
●
●
●
40 ... 70 Hz
40 ... 70 Hz
10 mHz
Current
●
●
●
●
●
●
●
●
●
0,001 ... 8,5 A
1 mA ... 1 MA
±0,2 %
cosφ
●
●
●
●
●
0,01 L ... 0,01 C
0,01L ... 0,01C
±0,5 %
Power factor
●
●
●
●
●
0,01 L ... 0,01 C
0,01L ... 0,01C
±0,5 %
THDU L-N
●
●
●
●
●
●
●
●
0 ... 999 %
0 ... 999 %
1%
THDU L-L
●
●
●
●
●
●
●
0 ... 999 %
0 ... 999 %
1%
THDI
●
●
●
●
●
●
●
●
0 ... 999 %
0 ... 999 %
1%
Harmonics of voltage
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Group of interharmonics U
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Group of harmonics U
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Harmonics P
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Harmonics Q
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Harmonics I
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Group of interharmonics I
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Group of harmonics I
●
●
●
●
0 ... 999 %
0 ... 999 %
Class 1
Actual flicker (hidden)
●
●
●
●
●
0,4 ... 10,0 Pist
0,4 ... 10,0 Pist
Class A
Short-term flicker
●
●
●
●
●
0,4 ... 10,0 Pst
0,4 ... 10,0 Pst
Class A
Long-term flicker
●
●
●
●
●
0,4 ... 10,0 Plt
0,4 ... 10,0 Plt
Class A
Under-voltage
●
●
●
●
●
●
●
●
●
●
●
0 ... 100 %
0 ... 100 %
0,2%
Over-voltage
●
●
●
●
●
●
●
●
●
●
●
0 ... 100 %
0 ... 100 %
0,2%
Unbalance U
●
●
●
●
0 ... 100 %
0 ... 100 %
0,15%
Neutral point displacement
●
●
●
●
10 ... 600 V
0 ... 1 MV
0,2%
K-factor
●
●
●
●
Unbalance I
●
●
●
●
0,5%
Transients
●
●
●
●
25 μs
Events
●
●
●
●
10 ms
Ripple control signal
●
●
●
●
●
●
●
●
●
●
●
Active power
●
●
●
●
●
●
●
●
●
0 ... 15,3 kW
0 ... 9999 GW
±0,2 %
Reactive power
●
●
●
●
●
●
●
●
●
0 ... 15,3 kvar
0 ... 9999 Gvar
±0,2 %
Apparent power
●
●
●
●
●
●
●
●
●
0 ... 15,3 kVA
0 ... 9999 GVA
±0,2 %
Distortion power
●
●
●
●
●
●
●
●
●
±0,2 %
Active /-
●
●
●
●
0 ... 9999 GWh
0 ... 9999 GVh
±0,2 %
Reactive ind. /-
●
●
●
●
0 ... 9999 Gvarh 0 ... 9999 Gvarh
±0,2 %
Reactive cap. En/-
●
●
●
●
0 ... 9999 Gvarh 0 ... 9999 Gvarh
±0,2 %
* for ideal sinusoidal curve of voltage and current
Table 1: Measured and displayed parameters
3. Installation
PLA34 is prepared for wall mounting in the fixed switch boards. In order to assure well ventilation, the PLA34 has to
be installed vertically. There has to be empty space at least 50 mm at the top and bottom and 20 mm at the sides.
PLA34 is fixed into switchboard wall by two clips that are placed on the device at the bottom and top.
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