Dual power system measurement unit

Measurement master

100 to 240 VAC

RS-485

KM1-PMU2A-FLK

Power measurement unit

KM1-PMU1A-FLK

Pulse/temperature input unit

Function slave

KM1-EMU8A-FLK

CT extension unit

CT extension slave

Power supplied from the measurement master unit

-

KE1-CTD8E

DeviceNet communications unit

Communications slave

100 to 240 VAC

RS-485 or DeviceNet

KE1-DRT-FLK

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

5 A/50 A

In-panel (penetration type)

KM20-CTB-5A/50A

3-m cable

KM20-CTF-CB3

30 × 80 × 78 (W×H×D)

RS-232C, USB <-> Half-duplex RS-485

100 to 240 VAC

K3SC-10 AC100-240

24 VAC/DC

K3SC-10 AC/DC24

Applicable phase wiring method

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

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

-

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

Maximum number of CT connections

4

3

-

8

Selectable types of CT capacities

2 types

1 type

-

Two types per Slave Unit

Power supply

Rated power supply voltage

100 to 240 VAC, 50/60 Hz

-

Allowable supply voltage range

85% to 110% of rated power supply voltage

-

Power supply allowable frequency range

45 to 65 Hz

-

Power consumption

Standalone: 10 VA max., Maximum expansion: 14 VA max.

10 VA max.

-

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

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 (CT)

(5, 50, 100, 200, 400, or 600 A)

-

(5, 50, 100, 200, 400, or 600 A)

Rated input power

With 5-A CT: 4 kW

With 50-A CT: 40 kW

With 100-A CT: 80 kW

With 200-A CT: 160 kW

With 400-A CT: 320 kW

With 600-A CT: 480 kW

-

Rated input frequency

50/60 Hz

-

Allowable input frequency range

45 to 65 Hz

-

Allowable input voltage

110% of rated input voltage (continuous)

-

Allowable input current

120% of rated input current (continuous)

-

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 operating humidity

25% to 85%

Storage humidity

25% to 85%

Altitude

2,000 m max.

Accuracy1

Voltage

±1.0% FS, ±1 digit; or, ±2.0% FS, ±1 digit for voltage across Vtr under the same conditions

-

Current

±1.0% FS, ±1 digit

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

-

±1.0% FS, ±1 digit

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

Power (active power and reactive power)

Active power and reactive power

±2.0% FS, ±1 digit (Power factor = 1)

-

Active power and reactive power

±2.0% FS, ±1 digit (Power factor = 1)

Frequency

±0.3 Hz ±1 digit

-

Power factor2

±5.0% FS at an ambient temperature of 23° C, rated input, rated frequency, and a power factor of 0.5 to 1 to 0.5

-

±5.0% FS at an ambient temperature of 23° C, rated input, rated frequency, and a power factor of 0.5 to 1 to 0.5

Temperature

-

±5°C two hours after the power supply is turned ON (after performing any adjustments for the ambient temperature)

-

RS-485

Protocols

Communications protocol setting: Compoway/F or Modbus

Sync method

Start-stop

Node number setting

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

When a switch operation is performed to set the protocol to Modbus when the node number is set to 0, the node number is automatically changed to 1.

Baud rate

9,600 bps, 19,200 bps, or 38,400 bps

Transmission code

CompoWay/F: ASCII, Modbus: Binary

Data length3

CompoWay/F: 7 bits, 8 bits; Modbus: 8 bits

Stop bits3

CompoWay/F: 1 bits or 2 bits; Modbus: 1 bit with priority, 2 bits without priority

Parity

Even, odd, or none

Maximum transmission distance

500 m

Maximum number of nodes

CompoWay/F: 31, Modbus: 99

Communication items

Refer to the relevant communication specification manuals

USB

USB 1.1 compatible

Rated primary current

5 A

50 A

100 A

200 A

400 A

600 A

5 A/50 A

Rated secondary current

1.67 mA

1.67 mA

33.3 mA

66.7 mA

66.7 mA

66.7 mA

1.67 mA/16.7 mA

Secondary winding

3,000 turns

6,000 turns

9,000 turns

3,000 turns

Applicable frequency

10 Hz to 5 kHz

Insulation resistance

Between output terminals and case: 50 MΩ min. (at 500 VDC)

Dielectric strength

Between output terminals and case: 2,000 VAC for 1 minute

Protective element

7.5-V clamp element

Allowable number of connections/disconnections

100 times

Inner diameter (mm)

10

16

24

37

10

Operating temperature and humidity ranges

−20 to 60° C, 85% max. (with no condensation)

Storage temperature and humidity ranges

−30 to 65° C, 85% max. (with no condensation)

Dimensions (mm)

45 × 96 × 90 (W×H×D)

(maximum width of 45 × 5 when five Units are linked together)

Applicable phase wiring method

Single-phase, two wire

OK

OK

-

Single-phase, three wire

OK

OK

-

Three-phase, three wire

OK

OK

-

Three-phase, four wire

PMU1A only

OK

-

400-V direct measurement

OK

-

-

Power Monitor power supply

100 to 240 VAC

Provided from the Master Unit

100 to 240 VAC

Measured items

Total power consumption

OK

OK

-

Active power

OK

OK

-

Instantaneous reactive power

OK

OK

-

Current

OK

OK

-

Voltage

OK

-

-

Power factor

OK

OK

-

Frequency

OK

-

-

Pulse count

-

-

OK (Can be changed with event input.)

Temperature

-

-

OK

Communications

• Remote I/O communications (I/O assignment settings with simple assignment settings or the Configurator)
• Message communications

Connection configuration

Can be a combination of multidrops and T-branching (for both main and branch lines).

Baud rate

500, 250, or 125 kbps (automatically detected)

Rated primary current

5 dedicated lines (2 signal lines, 2 power lines, and 1 shield)

Communications distance

Baud rate

Maximum network length4

Branch line length

Total for all branch lines

500 kbps

100 m max. (100 m max.)

6 m max.

39 m max.

250 kbps

250 m max. (100 m max.)

6 m max.

78 m max.

125 kbps

500 m max. (100 m max.)

6 m max.

156 m max.