NMTFi - PHASE ANGLE AND POWER FACTOR TRANSDUCER OF SINGLE-PHASE AC ELECTRIC POWER
The NMTFi device is a phase angle and power factor transducer operated in single-phase power network and featuring two independent analogous outputs. The A output measures the phase angle between voltage and current, the B output measures the power factor. In such a was one single NMFTi transducer is able to replace two customary transducers thus making it possible to achieve significant savings in installation space.
ENGINEERING PARAMETERS
- power supply voltage 20V to 300V DC or 24V to 260VAC/50 Hz (60Hz)
- power consumption 3 VA at full load at the outputs
- number of voltage inputs 1
- rated input voltage selectable within 57.7V to 500 V
- overload capacity of voltage input 120% of Un rated voltage, constant operation
200% of Un, for short time (1s)
- number of current inputs 1
- rated input current In selectable within 1 A to 5 A
- input current range 0 to 1.2 of In (rated current)
- overload capacity of current input 1.2x In; 20x In during a short time (1s)
- phase angle measuring ranges ± 60°; ± 90°; ± 120°
- phase angle measuring accuracy ±0.02°
- power factor measuring range (cos φ) 0.5 cap ... 1 ... 0.5 ind
- power factor measuring accuracy ±0.002
- analogous outputs 2
current outputs 0...20mA; 4...20 mA , or 0…x mA (x= 5 mA to 20 mA)
voltage outputs 0...10 V or 0…x V (x= 1 V to 10 V)
- rated load of the output
voltage output Run = Uan / 2mA
current output Rin = 5 V/ Ian (Ian = rated output current)
- permitted output load range
voltage output Ru > than 0.25 Run
current output loop resistance Ri of less than 2xRin
- settling time after connecting the power supply 1 minute
- dielectric strength (to ČSN EN 61010-1 standard)
between inputs and outputs, between inputs and the power source, between inputs and the auxiliary power source, terminals against the cover 3700V, 50Hz/1min
between the inputs 1000 V, 50 Hz/min
- material of the case PC/ABS
- weight max. 200g
- dimensions 101x114x35 mm
- operating temperature range -25° C to +70°C
- operating position any desired
- protection degree IP 20
- electromagnetic compatibility radiation: in accordance with ČSN EN 55011-B standard
immunity: in acc. with ČSN EN 6100-6-2, ed.3 standard
- safety corresponding to ČSN EN 61010 – 1 standard: equipment of the protection class II, overvoltage category III in the installation (highest voltage of 300Vrms against the earth), pollution degree 2
Order code
The parameters of the input and output are defined by a six-digit code. It is essential to accurately specify the X parameters in the purchase order.
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Ordering |
NMTFi |
* |
* |
* |
* |
* |
* |
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Rated input voltage [ V ] |
100/ √3 |
1 |
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110/ √3 |
2 |
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100 |
3 |
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110 |
4 |
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230 |
5 |
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400 |
6 |
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other value |
X |
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Rated input current [ A ] |
1,0 |
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1 |
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2 |
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2 |
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5 |
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5 |
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other |
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X |
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Phase angle measuring range |
± 60° |
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1 |
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± 90° |
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2 |
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± 120° |
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3 |
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other value |
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X |
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Power factor measuring range |
0.5 cap. ... 1 ... 0.5 ind. |
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1 |
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other value |
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X |
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Output A phase angle |
0…10…20 mA |
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1 |
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4 …12…20 mA |
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2 |
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0… 5 …10 V |
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3 |
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other value |
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X |
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Output B power factor |
0…10…20 mA |
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1 |
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4 …12…20 mA |
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2 |
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0… 5 …10 V |
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3 |
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other value |
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X |
MANUFACTURED BY:
METRA BLANSKO s.r.o. Company ID No.: 023 56 180
Pražská 2536/7 Tax reg. No.: CZ02356180
67801 Blansko, Czech Republic Web: www.metra.cz