KW2G / KW2G-H Eco-POWER METER
115
9.2 Measurement
●
Electric power input (Main unit, Expansion unit (power measurement))
Phase and wire system
Single-phase two-wire system
Single-phase three-wire system
Three-phase three-wire system
(common)
Measurement circuit
Main unit
1-circuit
(When measuring 1P2W: 2-circuit)
(1-power source system)
Expansion unit
1-circuit
(When measuring 1P2W: 2-circuit)
Max. measurement circuit
8-circuit (When measuring 1P2W: 16-circuit)
(One main unit
+
7 expansion units)
Input
measurement
Voltage
Rating
Single-phase two-wire system: 100-240V AC (Line voltage)
Single-phase three-wire system: 100-120V AC (Phase voltage)
Three-phase three-wire system: 100-240V AC (Line voltage)
Allowable measurement
voltage
85 to 110% of rated input voltage
Single-phase two-wire system: 85-264V AC (Line voltage)
Single-phase three-wire system: 85-132V AC (Phase voltage)
Three-phase three-wire system: 85-264V AC (Line voltage)
VT ratio
1.00 to 99.99 (Set with setting mode)
*Voltage transformer (VT) is required when you measure a load
with voltage over 240VAC (Allowable measurement voltage).
*Secondary voltage rating of VT is 110V.
Input
measurement
Current
Rating
<Using the dedicated CT>
・
5A/50A/100A/250A/400A/600A (Select with setting mode)
<Using a commercial CT with the secondary side current 5A>
・
1 to 4000A (Set with setting mode)
*Use CT with secondary side current of 5A when measure 600A or
more.
Allowable measurement
current
120% of rated input voltage
Special
Functions
Cut-off current
0.1 to 50.0%F.S. (Set with setting mode)
Cut-off voltage
Below 5% of rating voltage
(Rating voltage x 0.05 x VT ratio) (Fixed)
Accuracy
(without error
in CT and VT)
・
Instantaneous electric
power
・
Integrated electric
power
・
Electricity charge
・
Conversion value
±
(2.0% F.S.+1 digit)
(at 20
℃
, rated input, rated frequency, power factor 1)
*Accuracy coverage: 10 to 100% of CT
Current
±
(1.0% F.S.+1 digit)
(at 20
℃
, rated input, rated frequency, power factor 1)
*Accuracy coverage: 10 to 100% of rated current
Voltage
±
(1.0% F.S.+1 digit)
(at 20
℃
, rated input, rated frequency, power factor 1)
Temperature
characteristics
±
(1.0% F.S.+1 digit)
(Range of -10 to 50
℃
, rated input, power factor 1)
Hour meter
±
(0.01%.+1 digit) (at 20
℃
)
Frequency
characteristics
±
(1.0% F.S.+1 digit)
(Frequency change
±
5% based on rated frequency for rated input,
power factor 1)
Data update cycle
100ms
Summary of Contents for KW2G Eco-POWER METER
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