Voltage; Power Factor; Reactive Power; Frequency - Omron KM1 User Manual

Current
PMU1A PMU2A
(Electric (Power
power) two-system)
Measurement range: 0.000 to 9999.999 A (minimum unit: 0.001 A)
The following currents are measured: instantaneous value, maximum value, and minimum value.
Measurement values to be logged include PMU1A (electric power) and PMU2A (power two-system)
only. The measurement value of CTD8E (CT expansion) is excluded. (CTD8E (CT expansion) does not
have logging function.)
S-phase current of 3-phase 3-wire is calculated based on R-phase and T-phase currents. N-phase
current of single-phase 3-wire is calculated based on R-phase and T-phase currents.
* CTD8E (CT expansion) can perform the two-system measurement only when it is connected to
PMU2A (power two-system).

Voltage

PMU1A PMU2A
(Electric (Power
power) two-system)
Measurement range: 0.0 to 99999.9 V (minimum unit: 0.1 V)
The following voltages are measured: instantaneous value, maximum value, and minimum value.

Power factor

PMU1A PMU2A
(Electric (Power
power) two-system)
Measurement range: -1.00 to 0.00 to 1.00 (units of 0.01 (3 digits))
The following power factors are measured: instantaneous value, maximum value, and minimum value.
When the low-cut function works, the power factor measurement value is fixed to 1.
Measurement values to be logged include PMU1A (electric power) and PMU2A (power two-system)
only. The measurement value of CTD8E (CT expansion) is excluded. (CTD8E (CT expansion) does not
have logging function.)
* CTD8E (CT expansion) can perform the two-system measurement only when it is connected to
PMU2A (power two-system).

Reactive power

PMU1A PMU2A
(Electric (Power
power) two-system)
Measurement range: -99999999.9 to 99999999.9 var (minimum unit: 0.1 var)
The following reactive power amounts are measured: instantaneous value, maximum value, and
minimum value.
If the input current is less than the low-cut setting value, the reactive power value is forced to be 0 var.
Measurement values to be logged include PMU1A (electric power) and PMU2A (power two-system)
only. The measurement value of CTD8E (CT expansion) is excluded. (CTD8E (CT expansion) does not
have logging function.)
* CTD8E (CT expansion) can perform the two-system measurement only when it is connected to
PMU2A (power two-system).

Frequency

PMU1A PMU2A
(Electric (Power
power) two-system)
range: 45.0 to 65.0 Hz (minimum unit: 0.1 Hz)
Measurement

Temperature measurement

PMU1A PMU2A
(Electric (Power
power) two-system)
× ×
• Measurement range: -50.0 to 100.0°C
• Ambient temperature is measurable.
• Celsius or Fahrenheit is selectable. (Initial value: Celsius)
• Setting an arbitrary value can compensate the temperature.
• The measurement value is obtained by adding set temperature compensation.
• Setting range of temperature compensation:-50.0 to 50.0 (Initial value: 0.0)
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
×
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
× ×
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
×
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
×
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
× ×
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
×
-58.0 to 212.0°F
: Two-system having measurement function O: With
measurement function X: Without measurement function
: two-system having measurement function O: With
measurement function X: Without measurement function
: Two-system having measurement function O: With
measurement function X: Without measurement function
: Two-system having measurement function O: With
measurement function X: Without measurement function
: Two-system having measurement function O: With
measurement function X: Without measurement function
O: With measurement function X: Without measurement function
3.6 Other functions
3-7