KW4M Eco-POWER METER (DIN48) (AKW5)
Power input specifications *Will not operate simultaneously with pulse measurement mode.
Pulse input specifications *Will not operate simultaneously with electrical power measurement mode.
Pulse output (transistor output) specifications
*We recommend the setting of minimum unit for pulse output for measurement shown as below. Output pulse: 4 pulse or less per 1sec.
How to calculate: (Unit for pulse output : PL-P) > (Max. measurement power [kW]) / (3600[s] × 4 [pulse/s])
Notes: 1. Count errors may occur if pulse output unit is set so that 4 or more pulses are output per 1 second.
2. The connected counter or PLC may cause count errors if the OFF time of the pulse output unit is short.
Item Specifications
Phase and wire system Single-phase two-wire system, Single-phase three-wire system, Three-phase three-wire system
Input
voltage
Rating
Single-phase two-wire: 100 to 120/200 to 240V AC (common)
Single-phase three-wire: 100 to 120V AC
Three-phase three-wire: 200 to 240V AC
Allowance 85% to 110% of rated input voltage
Allowable measurement voltage
Single-phase two-wire: 85 to 132/170 to 264V AC (common)
Single-phase three-wire: 85 to 132V AC
Three-phase three-wire: 85 to 264V AC
VT ratio
1.00 to 99.99 (Set with setting mode)
*Voltage transformer (VT) is required when you measure a load with voltage over 200V system.
*Secondary current rating of commercial VT is 110V.
Input
current
Primary side rating
<In case using dedicated CT>
• 5A/50A/100A/250A/400A (Select with setting mode)
<In case using CT with secondary rating 5A>
• 1 to 4000A (Set with setting mode)
*Accuracy coverage: 10 to 100% of rated current of CT
CT ratio
1 to 4000 (Set with setting mode)
*In case measuring CT of secondary rated current 5A.
Special
functions
Cut-off current 1.0 to 50.0%F.S.
Hour meter threshold current 1.0 to 100.0%F.S.
Accuracy
(without
error in CT
and VT)
Indication
accuracy
Instantaneous electric power
Integrated electric power
Voltage
Current
Electricity charge
Calculated CO
2 value
±2.5% F.S. ±1 digit
(at 20°C, rated input, rated frequency, power factor 1)
*Accuracy coverage: 10 to 100% of rated current of CT
Hour meter ±0.01%+1 digit (at 20°C) (In case power on start or current energizing, ±0.01%+1s+1 digit)
Temperature characteristics
±1.5% F.S./10°C+1 digit
(Range of –10 to 50°C based on 20°C for rated input power factor 1)
Frequency characteristics
±1.5% F.S.+1 digit
(Frequency change ±5% based on rated frequency, for rated input power factor 1)
Item Specifications
Input mode Addition (Fixed)
Max. counting speed 2kHz/30Hz (Select with setting mode)
Pulse input
Min. input signal width: 0.25ms (When selected 2kHz)/16.7ms (When selected 30Hz)
ON : OFF ratio = 1 : 1
Input signal
Contact/No contact (open collector)
• Impedance when shorted: Max. 1kΩ
• Residual voltage when shorted: Max. 2V
• Impedance when open: Min. 100kΩ
Output mode HOLD (Over count)
Number of digit 6-digit (0 to 999999) (Selectable with setting mode)
Pre-scale
setting
Decimal point Setting possible up to 3 digits after decimal point (Auto-setting)
Range 0.001 to 100.000 (Selectable with setting mode)
Unit
CNT / l / kl / m
3
(Selectable with setting mode)
(Count value does not change even if the unit setting is changed during counting.)
Item Specifications
Number of output point 1 point
Insulation method Optical coupler
Output type Open collector
Output capacity 100mA 30V DC
Pulse width Approx. 100ms*
ON state voltage drop 1.5V or less
OFF state leakage current 100µA or less
Pulse output
unit
Power measurement 0.001/0.01/0.1/1/10/100kWh/Alarm (Selectable with setting mode)
Pulse input measurement HOLD (Over count)
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