Série KM50

Fonctions

Contrôle précis de la consommation d'énergie sur panneau

KM50 peut mesurer l'énergie, le courant et la tension produits et consommés, ainsi que l'énergie réactive guide, l'énergie réactive témoin, le facteur de puissance, la fréquence, entres autres.

  • Analyse des économies d'énergie facilitée grâce à la fonction de classification énergétique intégrée.
  • Mesures haute précision même pour des courants inférieurs à 5% de la valeur nominale grâce au changement automatique de plage.
  • Mesure et distinction de l'énergie consommée et générée.
  • Mesure de l'énergie réactive et du facteur de puissance.
  • Mesure des impulsions intégrée et conversion directe pour mesurer les indicateurs de performance de la gestion de l'énergie (ex. nombre de pcs/kWh).
  • Aucun transformateur de tension requis, détection de tension directe/CT ouvrable
  • Écran à plusieurs couleurs
  • Communications ModBus
  • Enregistrement des données intégré
Caractéristiques et références

Ordering information

KM50-E Smart power monitor

Applicable circuits

Power supply voltage (shared)

Dimensions

Communications

Protocol

Order code

Single-phase, two wire: 100 to 480 VAC

Single-phase, three wire: 100/200 VAC

Three-phase, three wire: 100 to 480 VAC

Three-phase, four wire: 85 to 277 VAC

100 to 240 VAC

96 × 48 × 93 (H × W × D)

RS-485

CompoWay/F: 31 nodes,
Modbus: 99 nodes
(Both are supported by the same model.)

KM50-E1-FLK

CTs

Rated primary current

Rated secondary current

Installation

Order code

5 A

Special output

Installed separately

KM20-CTF-5A

50 A

KM20-CTF-50A

100 A

KM20-CTF-100A

200 A

KM20-CTF-200A

400 A

KM20-CTF-400A

600 A

KM20-CTF-600A

Note: CT cables are not included with the CTs.

CT Cable

Cable length

Order code

3 m

KM20-CTF-CB3

Note: Either use the CT Cable specified by OMRON or use 1.25-B3A crimp terminals and AWG22 wire from J.S.T. Mfg. Co., Ltd.

Specifications

Ratings

Item

KM50-E

Applicable circuit

Single-phase two wire, single-phase three wire, three-phase three wire and three-phase four wire power

Rated power supply voltage

100 to 240 VAC, 50/60 Hz

Allowable supply voltage range

85% to 110% of rated power supply voltage

Allowable frequency range

45 to 65 Hz

Power consumption

7 VA max.

Rated input

Rated input voltage

100 to 480 VAC (single-phase, 2-wire): Line voltage

100/200 VAC (single-phase, 3-wire): Phase voltage/line voltage

100 to 480 VAC (3-phase, 3-wire): Line voltage

58 to 277 VAC (3-phase, 4-wire): Phase voltage

Rated input current

5 A, 50 A, 100 A, 200 A, 400 A, or 600 A (primary current of Special CT)1

Rated frequency

50/60 Hz

Rated input power

With 5-A CT: 4 kW

With 100-A CT: 80 kW

With 400-A CT: 320 kW

With 50-A CT: 40 kW

With 200-A CT: 160 kW

With 600-A CT: 480 kW

Allowable input voltage

110% of rated input voltage (continuous)

Allowable input current

120% of rated input current (continuous)

Ambient operating temperature

10 to 55°C (with no condensation or icing)

Storage temperature

25 to 65°C (with no condensation or icing)

Ambient and storage operation humidity

25% to 85%

Installation environment

Overvoltage category and measurement category: 2, Pollution level: 2

Performance

Smart power monitor

Item

KM50-E

Accuracy

Voltage

± 1.0% FS ± 1 digit (at ambient temperature of 23°C, rated input, and rated frequency).

However, the accuracy is ± 2.0% FS ± 1 digit for the Vtr line voltage for three-phase, three wire power and the Vrs line voltage for single-phase, three wire power under the same conditions.

Current

± 1.0% FS ± 1 digit (at ambient temperature of 23°C, rated input, and rated frequency).

However, the accuracy is ± 2.0% FS ± 1 digit for the phase-S current for three-phase, three wire power and the phase-N current for single-phase, three wire power under the same conditions.

Active power
Reactive power

± 2.0% FS ± 1 digit (at ambient temperature of 23°C, rated input, rated frequency, and a power factor of 1)

Reactive power formula: Reactive power = v × i × sin θ

“v” is the instantaneous voltage and “i” is the instantaneous current.
θ is the phase difference between the voltage and current.

Frequency

± 0.3 Hz ± 1 digit (at ambient temperature of 23°C, rated input, and rated frequency)

Power factor

± 5.0% FS ± 1 digit (at ambient temperature of 23°C, rated input, rated frequency, and power factor = 0.5 to 1 to 0.5)

Power factor formula: Power factor = Active power/Apparent power

 

Temperature

± 5°C two hours after the power is turned ON (after setting the offset to match the ambient environment)

Communications

Communications method

RS-485 (two wire half-duplex)

Sync method

Start-stop

Unit number setting

CompoWay/F: 0 to 99, Modbus: 1 to 99

Baud rate

1.2, 2.4, 4.8, 9.6, 19.2, 38.4 kbps

Transmission code

CompoWay/F: ASCII, Modbus: Binary

Data length

7, 8 bits

Stop bit length

1, 2 bits

Vertical parity

Even, odd, or none

Maximum transmission distance

500 m

Maximum number of connected Power Monitors

CompoWay/F: 31, Modbus: 99

 

CTs

Item

KM20-CTF-5A

KM20-CTF-50A

KM20-CTF-100A

KM20-CTF-200A

KM20-CTF-400A

KM20-CTF-600A

Rated primary current

5 A

50 A

100 A

200 A

400 A

600 A

Secondary winding

3,000 turns

6,000 turns

9,000 turns

Application frequency

10 Hz to 5 kHz

Insulation resistance

Between output terminal and external case: 50 M Ω min. (at 500 VDC)

Dielectric strength

Between output terminal and external case: 2,000 VAC for 1 min

Protective element

7.5 V clamp element

Allowable number of connections/disconnections

100 times

Inner diameter

10 dia.

16 dia.

24 dia.

37 dia.

Operating temperature and humidity range

20 to 60°C 85% (with no condensation)

Storage temperature and humidity range

30 to 65°C 85% (with no condensation)


1. A special output signal is output as the secondary current from the Special CT.

1. A special output signal is output as the secondary current from the Special CT.

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