Business > Industrial Devices > Automation Controls Top > FA Sensors & Components > Energy Management Solutions > Eco Series (Simple Watt-Hour Meter/ Simple Power-On Counter/ Power-On Hour Meter) > KW1M-H Eco-POWER METER(Discontinued Products) > Rating/ Performance
We are sorry, the products have been discontinued. Please refer to the details of the discontinued products and the recommended substitutes list below.
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Item | Unit | Data display range | |
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Instantaneous electric power (Active) | kW | 0.00 to 9999.99 | |
Integrated electric power (Active) | kWh/MWh | 0.00 to 9999.99 MWh 0.00 to 9999999.99 kWh (when 9-digit display) |
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Current | R-current | A | 0.0 to 6000.0 |
S-current | A | 0.0 to 6000.0 | |
T-current | A | 0.0 to 6000.0 | |
Voltage | R (RS)-voltage | V | 0.0 to 9999.9 |
S (RT)-voltage | V | 0.0 to 9999.9 | |
T (TS)-voltage | V | 0.0 to 9999.9 | |
Electricity charge (Note 1) | - | 0.00 to 999999 | |
Conversion carbon dioxide value | kg-CO2 | 0.00 to 999999 | |
Power factor | - | 0.00 to 1.00 [Identify leading phase (–) or lagging phase] (Only in range of phase angle θ = –90° to +90°) |
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Frequency | - | 47.5 to 63.0 Hz | |
Hour meter | ON-time | h (Hour) | 0.0 to 99999.9 |
OFF-time | h (Hour) | 0.0 to 99999.9 | |
Pulse counter | - | 0 to 999999 | |
Simple demand | Present demand | kW | 0.00 to 9999.99 |
Estimated demand | kW | 0.00 to 9999.99 | |
Ratio of estimated demand |
% | 0.0 to 9999.9 |
Note 1: | Eco-POWER METER is designed chiefly to manage saving energy. It is neither intended nor can it be legally used for billing. |
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Item | Specifications | |
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Rated operating voltage | 100 to 240V AC | |
Rated frequency | 50 / 60 Hz common | |
Rated power consumption |
8 VA (240 V AC at +25 ℃ +77 ℉) | |
Allowable operating voltage range | 85 to 264 V AC (85 % to 110 % of rated operating voltage) | |
Allowable momentary power-off time | 10 ms | |
Ambient temperature | -10 to +50 ℃ +14 to +122 ℉ (-25 to +70 ℃ -13 to +158 ℉ at storage) |
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Ambient humidity | 30 to 85 % RH (at +20 ℃ +68 ℉) non-condensing | |
Breakdown voltage(initial) | Between the isolated circuits : 2000V for 1min | A)Outer edge (case)-All terminals B)Between Insulated circuit ·Operating power supply terminals-Analog input terminals ·Operating power supply terminals-Pulse input terminal ·RS485-All other terminals ·Pulse output terminals-All other terminals |
Insulation resistance(initial) | Between the isolated circuits : 100MΩor more (measured at 500V DC) |
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Vibration resistance | 10 to 55Hz (1cycle/min) single amplitude : 0.375mm(1h on 3 axes) | |
Shock resistance | Min. 294m/s2 (5 times on 3 axes) | |
Display method | LCD with backlight Upper: green, 4-digit, 16-segment Lower: amber, 6-digit, 7-segment |
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Power failure memory method |
EEPROM (more than 100,000 overwrite) | |
Weight | 180 g approx.(wihtout battery) |
Note : | Analog input terminals: No.4, No.5 and No. 6 |
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Item | Specifications | ||
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Phase and wire system | Single-phase two-wire system Single-phase three-wire system Three-phase three-wire system Three-phase four-wire system |
(common) | |
Input voltage | Rating | Single-phase two-wire : 0-440V AC (Line voltage) Single-phase three-wire : 0-220V AC (Phase voltage) Three-phase three-wire : 0-440V AC (Line voltage) Three-phase four-wire : 0-254V AC (Phase voltage) |
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Allowable measurement voltage | Up to 120% of rated input voltage Single-phase two-wire : 0-528V AC (Line voltage) Single-phase three-wire : 0-264V AC (Phase voltage) Three-phase three-wire : 0-528V AC (Line voltage) Three-phase four-wire : 0-300V AC (Phase voltage) |
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VT ratio | 1.00 to 99.99 (Set with setting mode) *Voltage transformer (VT) is required when you measure a load with voltage over 440VAC (Allowable measurement voltage). *Secondary current rating of VT is 110V. |
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Input current | Primary side rating | <Using the dedicated CT> ・5A/50A/100A/250A/400A/600A (Select with setting mode) <Using a CT with the secondary side current 5A> ・1 to 4000A (Set with setting mode) *Use a CT with secondary side current of 5A when measure 600A or more. |
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Special functions | Cut-off current | 1.0 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) |
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Current threshold for hour meter | 1.0 to 100.0%F.S. | ||
Accuracy (without error in CT and VT) |
Indication accuracy | Instantaneous electric power, Integrated electric power, Conversion electricity charge value, Conversion carbon dioxide value |
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Within ± (2.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉, rated input, rated frequency, power factor 1) (Note) | |||
Current | |||
Within ± (1.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉ rated input, rated frequency, power factor 1) (Note) | |||
Voltage | |||
Within ± (1.0 % F.S. + 1 digit) (at +20 ℃ +68 ℉ rated input, rated frequency, power factor 1) | |||
Hour meter | |||
Within ± (0.01 % +1 digit) (at +20 ℃ +68 ℉) (In case power on start or current energizing: ± 0.01 % + 1 sec + 1 digit) | |||
Temperature characteristics | Within ± (1.0 % F.S. + 1 digit) (Range of -10 to +50 ℃ +14 to +122 ℉, rated input, power factor 1) In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit) under the same condition |
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Frequency characteristics | Within ± (1.0 % F.S. + 1 digit) (Frequency change ± 5 % based on rated frequency, rated input, power factor 1) In case of 5 A CT mode, within ± (1.5 % F.S. + 1 digit) under the same condition |
Note : | Accuracy coverage: 5 to 100 % of rated current In case of 5 A CT mode, within ± (2.5 % F.S. + 1 digit) under the same condition |
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Item | Specifications | |
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Input mode | Addition (Fixed) | |
Max. counting speed | 2 kHz / 30 Hz (Select with setting mode) (Note 1) | |
Pulse input (Min. input signal width) |
0.25 ms (When 2 kHz selected) / 16.7 ms (When 30 Hz selected), ON : OFF ratio = 1 : 1 | |
Input signal (at +20 ℃ +68 ℉) |
Contact / No contact (open collector) - Impedance when shorted: Max. 1 kΩ - Residual voltage when shorted: Max. 2 V - Impedance when open: Min. 100 kΩ |
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Mode | HOLD (Over count) | |
Prescale | Decimal point | Setting possible up to under 3-digit |
Range | 0.001 to 100.000 (Set with setting mode) |
Note 1: | Counting speed will be fixed at 50Hz when you select "pulse through" in the pulse output unit. |
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Item | Specifications |
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Input method | Non-voltage pulse input or open-collector input |
Pulse constant number | 50,000(pulse/kWh)/2,000(pulse/kWh) |
Minimum pulse width | 0.25ms (2kHz selection) / 16.7ms (30Hz selection) |
Pulse rate | 0.001 to 100.000 kWh/1pulse |
Item | Specifications |
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Number of output point | 1 point |
Insulation method | Optical coupler |
Output type | Open collector |
Output capacity | 100 mA 30 V DC |
Pulse width | 100 ms approx. |
ON state voltage drop | 1.5 V or less |
OFF state leakage current | 100 μA or less |
Pulse output unit | 0.001/0.01/0.1/1/10/100kWh/Alarm(AL-P)/ Current alarm(AL-C) /Stand-by alarm (AL-S) /Counter(Cnt) / Demand alarm(DEM) /Pulse through (P-THR) (Selectable with setting mode) |
Note : | 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]) |
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Note 1: | Improper unit setting may cause miss counting. |
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Note 2: | If the OFF time is too short, there is a possibility of counting errors. |
Item | Specifications |
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RS-485 communication | |
Protocol | MEWTOCOL and Modbus RTU (selectable with setting mode) |
Isolation status | Isolated with the internal circuit |
Number of connected units | Max. 99 units (Note 1) (Note 2) |
Transmission distance | 1,200 m 3,937 ft (Note 3) |
Transmission speed | 115200 / 57600 / 38400 / 19200 / 9600 / 4800 / 2400 bps (selectable with setting mode) |
Transmission format | Data length: 8-bit / 7-bit (selectable with setting mode) (Note 4), Parity: Not available / Odd number / Even number (selectable with setting mode), Stop bit: 1 bit (fixed) |
Communication method / Synchronous system |
Half-duplex / Synchronous communication method |
Ending resistance | 120 Ω approx. (built-in) |
Note 1: | For RS-485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co.,Ltd.). |
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Note 2: | When using SI-35,SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99 Eco-POWER METER can be connected. In case using this system with the other devices, up to 31 Eco-POWER METER can be connected. |
Note 3: | Please check with the actual devices when some commercial devices with RS-485 interface are connected. The number of connected devices, transmission distance, and transmission speed may be different according to using transmission line. |
Note 4: | With Modbus RTU protocol, it works only with 8bit. * Modbus Protocol is a communications protocol developed for PLCs by Modicon Inc. |
Item | Specifications | |
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Demand span | 30 minutes span fix | |
Span system | Synchronized with the main unit clock (synchronized with the frewuency of measured voltage) Time correction; available / not available (selectable with setting mode) |
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Data update cycle | 1 minute | |
Power input type | Current transformer (CT) input / Pulse input (Note 1) (selectable with setting mode) |
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Measurement item | Present demand (update every 1 second), Estimated demand (update every 1 minute) |
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Display | Present demand, Estimated demand, Demand setting value Ratio of estimated demand Demand log, Monthly max. demand log, Max. demand |
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Saved data (main unit memory) |
Monthly max. demand log 13 records (13 months) Demand log 336 records (7 days) |
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Demand alarm (Note 2) |
Indication | [D] blinking on the upper line |
Output | 1-circuit Pulse output (pulse output terminal) |
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Demand alarm stand-by time | 1 to 30 min. | |
Power Failure Memory | Monthly max. demand log, Demand log, Present demand, Max.demand |
Note: 1 | In order to use demand function by pulse input, input pulse with applicable pulse width according to 8.2.2 Pulse input. If other pulse is input, it doen't work the demand function correctly. |
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Note 2: | Demand alarm When the present demand or estimated demand exceeds the setting value, it notifies by the output and the indication. You need to set "DEM" with unit for pulse output setting in order to output. |
Note: 3 | In case of a power failire, it stops monitoring demand and demand alarm (demand alarm off). |
Please use this simple demand function as your standard.
It doesn’t support pulse input. It supports only CT input (power measurement).
The time used by this function is the time set up with Eco-POWER METER.
Therefore, it is different from the demand meter controlled by an electric power company.
Item | Specifications | |
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File type 1 (Instantaneous value) (Note) |
Save cycle |
60 minutes (Just at every hour) (fixed) |
Saved data |
(Instantaneous value) Integrated electric power, Instantaneous electric power, Current, Voltage, Power factor, Frequency, Count value |
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Saved data amount |
24 records for 1 file (Max 1.5 years) | |
File type 2 (Difference value) (Note) |
Save cycle |
60 minutes (Just at every hour) (fixed) |
Saved data |
(Difference value) Integrated electric power, Count value | |
Saved data amount |
24 records for 1 file (Max 1.5 years) | |
File type 3 (Detail instantaneous value) (Note) |
Save cycle |
Selectable from 1min, 5min, 10min, 15min, 30min, 60min. (Saved timing) 1min selected: Just at every minute 5min selected: 00,05,10,15,20,25,30min・・・of every hour 10min selected: 00,10,20,30,40,50min of every hour 15min selected: 00,15,30,45min of every hour 60min selected: Just at every hour |
Saved data |
(Instantaneous value) Integrated electric power, Instantaneous electric power, Current, Voltage, Power factor, Frequency, Count value, Electric power converted by pulse, Present demand, Load ON-time, Load OFF-time |
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Saved data amount |
Max. 5760 records about 4 days (In case of 1 min of save cycle) |
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Display | Monthly integrated electric power (Latest 18 months) Daily integrated electric power (Latest 30 days) Hourly integrated electric power (Latest 24 hours) |
Note : | You can select if the data of file type 1,2 and 3 is written to SD memory card with setting mode. |
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Item | Specifications |
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Time accuracy | Monthly accuracy: ± 240 sec (at -10 ℃ +14 ℉) Monthly accuracy: ± 70 sec (at +25 ℃ +77 ℉) Monthly accuracy: ± 240 sec (at +50 ℃ +122 ℉) |
Content of battery backup | Time measurement and log data |
Battery life | 2 years approx. (at ambient temperature +25 ℃ +77 ℉) (in power-off state) |
Item | Specifications |
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Support media | SD memory card (Note 1) |
Supported format standards | SD / SDHC standard conformance |
Note 1: | Please use the SLC type SD memory card. |
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Item | Clamp-on typ | ||||
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AKW4801B AKW4801C |
AKW4802B AKW4802C |
AKW4803B AKW4803C |
AKW4804B AKW4804C |
AKW4808B AKW4808C |
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CE marking directive compliance | Low Voltage Directive, RoHS Directive | ||||
Primary side rated current | 5A/50A | 100A | 250A | 400A | 600A |
Secondary side rated current | 1.67mA/16.7mA | 33.3mA | 125mA | 200mA | 200mA |
Winding (Turn) | 3000 | 3000 | 2000 | 2000 | 3000 |
Ratio error | ±2.0%F.S. | ||||
Through hole | ø10 ø0.39 | ø16 ø0.63 | ø24 ø0.94 | ø36 ø1.42 | ø36 ø1.42 |
Breakdown voltage (initial) | 1000V AC/1min (Between through hole and output lead wire) |
2000V AC/1min (Between through hole and output lead wire) |
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Insulation resistance (initial) | Min. 100 M Ω (at 500 V DC) (Between through hole and output lead wire) | ||||
Functional vibration resistance | 10 to 55 Hz (1 cycle / min), single amplitude: 0.15 mm 0.01 in (10 min on 3 axes) | ||||
Vibration resistance | 10 to 55 Hz (1 cycle / min), single amplitude: 0.375 mm 0.01 in (1 hour on 3 axes) | ||||
Functional shock resistance | Min. 98m/s2(4 times on 3 axes) | ||||
Shock resistance | Min. 294m/s2(5 times on 3 axes) | ||||
Output protection level | ±7.5 V with clamp element | ±3.0V with clamp element | |||
Permissible clamping frequency | 100 times approx. | ||||
Ambient temperature range | -10 to +50℃ +14 to +122 ℉ (without frost and non-condensing) | ||||
Storage temperature | -20 to +60℃ -4 to +140 ℉ (without frost and non-condensing) | ||||
Ambient humidity | 35 to 85%RH(at +20℃ +68 ℉ non-condensing) | ||||
Dimensions (mm in) (W x H x D) |
23 x 40 x 26.5 0.08 x 0.13 x 0.09 |
30 x46.5 x 32 0.10 x 0.15 x 0.11 |
45 x65 x 34 0.15 x 0.21 x 0.11 |
57 x81 x 38 0.19 x 0.27 x 0.12 |
62.6 x93.3 x 40 0.21 x 0.31 x 0.13 |
Weight (Relay cable included) |
60 g approx. | 90 g approx. | 200 g approx. | 295 g approx. | 450 g approx. |
Item | Through type | |||
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AKW4506B AKW4506C |
AKW4507B AKW4507C |
AKW4508B AKW4508C |
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CE marking directive compliance | Low Voltage Directive, RoHS Directive | |||
Primary side rated current | 50A/100A | 250A/400A | 600A | |
Secondary side rated current | 16.7mA/33.3mA | 125mA/200mA | 200mA | |
Winding (Turn) | 3000 | 2000 | 3000 | |
Ratio error | ±1.0%F.S. | |||
Through hole | ø17mm ø0.67 in | ø36mm ø1.42 in | ||
Breakdown voltage (initial) | 1000V AC/1min (Between through hole and output lead wire)) |
2000V AC/1min (Between through hole and output lead wire) |
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Insulation resistance (initial) | Min. 100 MΩ (at 500 V DC megger) (Between through hole and output lead wire) | |||
Functional vibration resistance | 10 to 55 Hz (1 cycle / min), single amplitude: 0.15 mm 0.01 in (10 min on 3 axes) | |||
Vibration resistance | 10 to 55 Hz (1 cycle / min), single amplitude: 0.375 mm 0.01 in (1 hour on 3 axes) | |||
Functional shock resistance | Min. 98 m/s2 (4 times on 3 axes) | |||
Shock resistance | Min. 294 m/s2 (5 times on 3 axes) | |||
Output protection level | ±7.5 V with clamp element | ±3.0 V with clamp element | ||
Permissible clamping frequency | - | |||
Ambient temperature range | –10 to +50 ℃ +14 to +122 ℉ (without frost and non-condensing) | |||
Storage temperature | –20 to +60 ℃ –4 to +140 ℉ (without frost and non-condensing) | |||
Ambient humidity | 35 to 80 % RH (at +20 ℃ +68 ℉non-condensing) | |||
Dimensions (mm in) (W x H x D) |
ø42 x 15 1.65 x 0.05 |
ø70 x19 2.76 x 0.06 |
ø70 x19 2.76 x 0.06 |
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Weight (Relay cable included) |
70 g approx. | 200 g approx. | 215 g approx. |
Notes :
1) | Dedicated CT are dedicated for low voltage under 440 V AC system. They can not be used for high voltage circuit. |
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2) | In each type of Eco-POWER METER excluding AKW8115, KW9M and KW2M, a combination of commercially secondary side 5 A CTs and dedicated CTs for 5 A is used for measuring high voltage circuits; For details, confirm with each respective user's manual. |
3) | Since dedicated CTs cannot be used when measuring with AKW8115, KW9M and KW2M, please be careful and do not purchase a dedicated CT by mistake. |
4) | For the AKW8115, KW9M and KW2M, CT with a secondary side current 1 A or 5 A is recommended. Please confirm the specification beforehand. |
5) | Dedicated CT are not included with Eco-POWER METERs. |
6) | Each dedicated CT includes a 1 m 3.281 ft relay cable, respectively. |
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