NMTFi – PHASE ANGLE AND POWER FACTOR TRANSDUCER OF SINGLE-PHASE AC ELECTRIC POWER

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.

Ordering

NMTFi

*

*

*

*

*

*

Rated input voltage [ V ]

100/ √3

1

110/ √3

2

100

3

110

4

230

5

400

6

other value

X

Rated input current [ A ]

1,0

1

2

2

5

5

other

X

Phase angle measuring range

± 60°

1

± 90°

2

± 120°

3

other value

X

Power factor measuring range

0.5 cap. ... 1 ... 0.5 ind.

1

other value

X

Output A phase angle

0…10…20 mA

1

4 …12…20 mA

2

0… 5 …10 V

3

other value

X

Output B power factor

0…10…20 mA

1

4 …12…20 mA

2

0… 5 …10 V

3

other value

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