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Model: |
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Q2S |
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- reactive power in three-wire symmetrical unbalanced grid
- power supply: 24V DC or 230V AC
- frequency range: from 40 to 1000Hz
- input-to-output-to-power supply isolation: 4000Vr.m.s.
- measuring range: 0 to 120% of rated input
- conversion accuracy < 0,5%
- compact design
- designed for DIN 35 rail mounting |
The converter has been designed to convert the reactive
power of an AC signal into a unified-range DC voltage or current. The converter input includes measuring current
transformers and voltage dividers. These are designed to adjust the input levels for processing in an analog
multiplier. The multiplier output signal is proportional to the input instantaneous power. After smoothing out
and isolation, it is fed into an output amplifier. The output amplifier generates a DC current or voltage, which
is fit for further processing and subsequent evaluation. The current signal may also be conveyed to a larger
distance even in a higher interference level environment. Both the input and the output circuit are
overload-protected.
The converter can handle a wide frequency spectrum. It can also be applied
to handling distorted waveform input signals. When measuring in a 50Hz-grid, it can process up to the twentieth
harmonic of the fundamental frequency. |
Electrical specifications: |
| - operating temperature range: |
-25...+80°C |
| - storage temperature range: |
-40...+ 80°C |
| - supply voltage: |
24V DC± 30% |
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230V ± 15%, 50 - 60Hz, max. 2VA |
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other options (80..300V DC, 60..250V AC) by arrangement |
| - protection: |
resettable thermal cut-out in primary circuit |
| - rated inputs: |
1A, 2,5A, 5A AC |
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57,7V, 100V, 110V, 220V, 230V, 380V, 400V, 500V AC |
| - voltage input current load: |
0,5mA |
| - current input power demand: |
typically 0,015VA |
| - input overload capacity: |
voltage: |
2 Unom - 1s |
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current:: |
2 Inom - 1min, 20 Inom - 1s |
| - output: |
4-20mA, 0-20mA, 0-10V |
| - output current limit: |
typically 28mA (electronic cut-out) |
| - current output maximum load: |
15 / Iout (ohm) |
| - voltage output maximum load: |
10mA |
| - temperature induced error: |
< 0,02%/°C |
| - transfer function maximum error: |
< 0,5% |
| - transfer function: |
linear |
| - test voltage: |
4000Vr.m.s. |
| - output signal settling time: |
300ms |
| - weight: |
220g |
| - enclosure: |
casing / terminal board: |
IP40 / IP10 |
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| Type tests: |
Standard type test:
EMC:
Safety: |
to CSN EN 60688
to CSN EN 61326-1
assessed acc. to CSN EN 61010-1 |
Q2S connecting diagram:
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| Terminal description: |
1,2,3,4....input of the phase current to be measured
5,6,7.......input of the delta voltage to be measured
8,9..........output (9 is +)
10,11......auxiliary AC power supply; for DC, 11 is + |
Dimension sketch:
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Converter capacity: Q = V¯ 3 . Us . If . sin j
Us - delta voltage
If - phase current |
Ordering instructions:
Your order should include:
- converter type
- auxiliary supply voltage
- rated input voltage
- rated input current
- measuring range (power)
- output range
- quantity (No. of pieces) |
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Czech version 
English version 
