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) > KW9M Eco-POWER METER > Rating/ Performance
Discontinuation plan
|
|
Type | Standard | Advanced | |
---|---|---|---|
Measurement items |
Active power | Each phase and Total (Import, Export) | |
Reactive power | Each phase and Total (Import, Export) | ||
Apparent power | Each phase and Total | ||
Power demand | IEC61557-12 demand | IEC61557-12 demand 30-min demand Peak demand |
|
Active electric energy | Each phase and Total (Import, Export) | ||
Reactive electric energy | Each phase and Total (Import, Export) | ||
Apparent electric energy | Each phase and Total | ||
Current | Each phase and Average current | Each phase, N-phase (when 3P4W) and Average current | |
Unbalanced current | - | Total (except N-phase) | |
Current THD | Each phase | ||
Current harmonics | - | Each phase (2nd to 31st harmonics) | |
Current demand | Each phase current demand | ||
Voltage | Line voltage (Each line and average), Phase voltage (Each phase and average) | ||
Unbalanced voltage | - | Total | |
Voltage THD | Line and Phase voltage | ||
Voltage harmonics | - | Line and Phase voltage (2nd to 31st harmonics) | |
Power factor | Each phase and Average | ||
Frequency | Each phase and Average | ||
Pulse count (Integral pulse) | - | 2 points | |
Temperature | Ambient temperature | ||
Calendar | - | Internal clock | |
Input | - | 2 points | |
Output | - | 2 points |
* | IEC 61557-12 is an international standard on performance measuring and monitoring devices (PMD). |
---|
Type | Standard | Advanced | |||||
---|---|---|---|---|---|---|---|
Item | Unit | Display data range*1 |
Present value (Instantaneous value)*2 |
Present value (Instantaneous value)*2 |
Maximum | Minimum | |
Instantaneous power |
Active | kW | -99999 to 0.000 to 99999 | ● | ● | ● | ● |
Reactive | kvar | ||||||
Apparent | kVA | ||||||
Integral power (import) |
Active | kWh | 0.00 to 9999999.9Wh*3 0.000 to 29999999 |
● | ● | - | - |
Reactive | kvarh | ||||||
Apparent | kVAh | ||||||
Integral power for each time zone (4-zone) (import) |
Active | kWh | 0.00 to 9999999.9 | - | ● | - | - |
Reactive | kvarh | ||||||
Apparent | kVAh | ||||||
Integral power (export) |
Active | kWh | 0.000 to 9999999.9 * Total integral power (export) 0.000 to 29999999 |
● | ● | - | - |
Reactive | kvarh | ||||||
Integral power for each time zone (4-zone) (export) |
Active | kWh | 0.000 to 9999999.9 | - | ● | - | - |
Reactive | kvarh | ||||||
Current | A | 0.000 to 99999 | ● | ● | ● | ● | |
N-phase when 3P4W | A | - | ● | ● | ● | ||
Voltage (Phase and Line voltage) | V | 0.00 to 99999 | ● | ● | ● | ● | |
Power factor | -1.000 to 0.000 to 1.000 | ● | ● | ● | ● | ||
Frequency | Hz | 0.00 to 99.99 | ● | ● | ● | ● | |
Pulse count value | 0.000 to 99999999 | - | ● | - | - | ||
Power conversion value |
Total | 0.000 to 9999999.9 | ● | ● | - | - | |
For each time zone |
- | ● | - | - | |||
Temperature | degree C | -100.0 to 100.0 | ● | ● | - | - | |
Calendar | January 1, 2000 00:00:00 to Dec. 31, 2099 23:59:59 |
- | ● | - | - |
*1 | The data display range is the numerical value range which can be displayed by the main unit display section and not the allowable measurement range. *1 Instantaneous value |
---|---|
*2 | Instantaneous value |
*3 | The value measured in 0.01Wh corresponds to reading via RS-485 communication only. |
Item | Unit | Display data range | Present value (Instantaneous value) |
Maximum | Minimum | |
---|---|---|---|---|---|---|
Unbalanced current*1 | Each phase | % | 0.000 to 999.99 | ● | ● | ● |
Unbalanced voltage*1 | Each phase | % | 0.000 to 999.99 | ● | ● | ● |
Current THD*2*4 | Each phase | % | 0.000 to 400.00 | ● | - | - |
Voltage THD*2*4 | Each phase | % | 0.000 to 400.00 | ● | - | - |
Current harmonics*1*3 | Each phase | % | 0.000 to 400.00 | ● | - | - |
Voltage harmonics*1*3 | Phase | % | 0.000 to 400.00 | ● | - | - |
Line | % | 0.000 to 400.00 | ● | - | - |
*1 | Only advanced type |
---|---|
*2 | Total harmonic distortion |
*3 | 2nd to 31st |
*4 | If the voltage to be measured is not the rated (commercial) frequency, it may take time for THD (total harmonic distortion) to stabilize. |
Item | Unit | Display data range | Present value (Instantaneous value) |
Maximum | Minimum | |
---|---|---|---|---|---|---|
Present demand |
Active | kW | 0.000 to 99999 | ● | ● | - |
Reactive | kvar | |||||
Apparent | kVA | |||||
Active (export) | kW | |||||
Reactive (export) | kvar | |||||
Current | A | |||||
Estimated demand*1, 2 | kW | 0.000 to 99999 | ● | - | - | |
Ratio of estimated demand*1, 2 | % | 0.000 to 99999 | ● | - | - | |
Integral power converted by pulse*1, 2 | kWh | 0.000 to 999999.99 | ● | - | - |
* | Please use this demand function as your standard. The demand value calculated with this function is not guaranteed. |
---|---|
*1 | Only advanced type |
*2 | Only when 30-min demand is set. |
Item | Standard | Advanced | |
---|---|---|---|
Accuracy [Without error of CT / VT] |
Electrical power |
0.5% | |
Active electric power Class 0.5S (IEC 62053-22)*1 | |||
Reactive electric power Class 2(IEC 62053-23)*1 | |||
Current | 0.2%*2 (Single-phase three-wire system 2 (N) phase current, three-phase three-wire system 2 (S) phase current, 0.5%) | ||
Voltage | 0.2% (Single-phase three-wire system 2 (N) phase voltage, three-phase three-wire system between 3-1 voltage, three-phase four-wire system line voltage is 0.5%) | ||
Temperature | ±5.0℃( after cycle temperature correction(selectable in setting mode)) two hours after communication |
*1 | IEC62053 is the international standard for electrical power measuring devices. |
---|---|
*2 | Current less than 5% of rated value may be outside of accuracy assurance range according to CT setting (maximum tolerance: 0.5%). |
Type | Standard | Advanced | |
---|---|---|---|
Supply voltage range |
100-240V AC | ||
100-300V DC | |||
Rated frequency | 50/60 Hz | ||
Nominal power consumption |
5 VA approx. (240 V AC at +25 ℃ +77 ℉) | 6 VA approx. (240 V AC at +25 ℃ +77 ℉) | |
3 W approx. (240 V DC at +25 ℃ +77 ℉) | 3 W approx. (240 V DC at +25 ℃ +77 ℉) | ||
Inrush current | 30 A or less (240 V AC/DC at +25 ℃ +77 ℉) | ||
Allowable momentary power-off time |
10 ms | ||
Ambient temperature |
Accuracy guarantee: −10 to +55 ℃ +14 to +131 ℉ | ||
Operation: −25 to +55 ℃ −13 to +131 ℉ | |||
Storage: −25 to +70 ℃ −13 to +158 ℉ | |||
Ambient humidity | 30 to 85 % RH (at +20 ℃ +68 ℉) non-condensing | ||
Breakdown voltage (initial) |
Between the isolated circuits: 2,000 V/1 min | Between the isolated circuits: 1,500 V/1 min | |
a) enclosure - all terminals b) between insulated circuits ・power supply terminals – other terminals ・RS-485 terminals – other terminals ・measured current input terminals – other terminals |
a) enclosure - all terminals b) between insulated circuits ・power supply terminals - other terminals ・RS-485 terminals - other terminals ・measured current input terminals - other terminals ・pulse input terminals - other terminals ・pulse output terminals - other terminals |
||
Insulation resistance (initial) | Between the isolated circuits: 100 MΩ or more | ||
Vibration resistance | 10 to 150 Hz (7.5 minutes/cycle) single amplitude: 0.075 mm 0.0030 in (1 h on 3 axes) |
||
10 to 55 Hz (1 minute/cycle) single amplitude: 0.375 mm 0.015 in (1 h on 3 axes) |
|||
Shock resistance | Min. 294 m/s2 (5 times on 3 axes) | ||
Display method | LCD with backlight | ||
Display updating time | 100 to 1000 ms (set with setting mode) | ||
Power failure memory method (when power OFF) |
Internal memory (overwrite 1010 or more) | ||
Calendar | Range | - | From January 1, 2000 00:00:00 to December 31, 2099 23:59:59 |
Accuracy | ±15 seconds/month (at +25 ℃ +77 ℉) | ||
Backup | About 1-month (backup with secondary battery) (after passing 48-hour, at +23 ℃ +73.4 ℉) |
||
Degree of protection | Front: IP51, Back: IP20 | ||
Sea level altitude | Under 2,000 m 6,562 ft | ||
Overvoltage category | 2 | ||
Pollution degree | II | ||
Dimensions W/H/D | 96 × 96 × 56 mm 3.78 × 3.78 × 2.20 in (without terminal block) 96 × 96 × 68 mm 3.78 × 3.78 × 2.68 in (with terminal block) |
||
Weight | 450 g approx. | 480 g approx. (with secondary battery) |
Type | Standard | Advanced | |||
---|---|---|---|---|---|
Measured data | AC sine | ||||
Phase/Wire system | Single-phase two-wire (1P2W) (max. 3-circuit), Single-phase three-wire (1P3W), Three-phase three-wire (3P3W) and Three-phase four-wire (3P4W) (Common) |
||||
Applicable power system | 100 V system, 200 V system and 400 V system | ||||
Measured frequency | 50/60 Hz | ||||
Sampling rate |
Sampling | 1.024 MHz (1.0 μs approx.) | 1.024 MHz (1.0 μs approx.) | ||
Date update |
Instantaneous value |
100 ms | 100 ms | ||
Harmonics | 2.25s | 22.5s (2nd to 31st) | |||
Voltage | Input voltage |
1P2W | L-L | 0 to 500 V AC | |
1P3W | L-L | 0 to 500 V AC | |||
L-N | 0 to 250 V AC | ||||
3P3W | L-L | 0 to 500 V AC | |||
3P4W | L-L | 0 to 500 V AC | |||
L-N | 0 to 289 V AC | ||||
Impedance | 2 MΩ or more (L-N: V1/V2/V3-Vn) | ||||
Resolution | 0.01 V | ||||
Power consumption | 0.2 VA approx. (L-N: V1/V2/V3-Vn) | ||||
Accuracy (Note 1) |
0.2 % *0.5 % for 2-phase voltage of 1P3W, 3-1 voltage of 3P3W and line voltage of 3P4W. |
||||
VT ratio | 1.00 to 600.00 (set with setting mode) *Voltage transformer (VT) is required when you measure a load with voltage over rated voltage. (Rated secondary voltage of VT is 110 V.) *When it input direct, VT ratio is set to 1.00. |
||||
Current | Input current (with CT) |
Primary current |
65,535 A or less | ||
Secondary current |
1 A or 5 A (set with setting mode) | ||||
Max. current | 10 A (200 % of the rating) | ||||
Overload capacity | 1,000 % of the rating for 3s | ||||
Resolution | 0.001 A | ||||
Power consumption | 0.2 VA approx. | ||||
Accuracy (Note 1) |
0.2 % (Note 2) *0.5 % for 2 (N) - phase current of 1P3W and 2 (S) - phase current of 3P3W. |
||||
Power | Accuracy (Note 1) |
0.5 % | |||
Active power Class 0.5S (IEC 62053-22) | |||||
Reactive power Class 2 (IEC 62053-23) | |||||
Temperature | Accuracy | ±5.0 ℃ ±41 ℉ (after ambient temperature correction with setting mode) Passing 2 hours or more after energized |
Notes:
1) | Without error of current transformers (CT) and voltage transformers (VT) |
---|---|
2) | As to the current under 5 % of rating, it may not satisfy the accuracy according to CT setting (max. error; 0.5 %). |
* | It measures from 0.1 % of CT secondary current. |
* | IEC62053 is the international standard for Electricity metering equipment. |
Number of output point | 2 points *Insulate between output terminals | |
---|---|---|
Insulation method | PhotoMOS relay | |
Output type | 1a | |
Output capacity | 100 mA, 30 V AC/DC | |
Output mode (OUT1/OUT2) | ・Pulse by integral power ・Output by alarm or events (set with setting mode) |
|
Pulse output by integral power |
Pulse width | 100 ms approx. |
Pulse output unit |
0.0001 kWh / 0.001 kWh / 0.01 kWh / 0.1 kWh /1 kWh / 10 kWh / 100 kWh | |
Alarm output Event output |
Type | Stand-by power alarm / Under voltage alarm / Over voltage alarm / Power interruption alarm / Under current alarm / Over current alarm / Active power alarm / Reactive power alarm / Apparent power alarm / Power factor alarm / Over frequency alarm / Under frequency alarm / Voltage harmonics alarm / Current harmonics alarm / Voltage THD alarm / Current THD alarm / Unbalanced voltage alarm / Unbalanced current alarm / Power demand alarm / Current demand alarm / Counter output / Level output (external control) |
Alarm reset | Self-reset (according to the setting) / Manual-reset | |
Protection element | Varistor (Note) |
Note: | Varistor is mounted internal as a protection element. Install a protective device in case of using at the place where it effects by surge. |
---|
<How to calculate>
(1) | Calculate the appropriate power to be measured from the unit of the integral power pulse output. Unit for pulse output > (Max. measurement power [kW]) / (3,600 sec × 1 pulse/sec) When the pulse output unit is 0.001, the maximum power that can be properly measured by pulse output is 3.6 kW (3,600 sec × 1 pulse/sec × 0.001). If the load is higher than this value, the output pulses cannot keep up with it, and the number of pulses becomes small. In such cases, set the pulse output unit to the value immediately above. |
---|---|
(2) | Calculate the appropriate pulse output unit from the instantaneous power to be measured. (Max. measurement power [kW]/3,600 sec × 1 pulse/sec) < Unit for pulse output When the maximum power to be measured is 10 kW, the pulse output unit required for the correct pulse output is 0.01 kWh/pulse, which is the value immediately above this one: 10 W/3,600 sec × 1 pulse/sec = 0.0027 |
Notes:
(1) | If the pulse output unit is set to output one pulse or more per second, the Eco- POWER METER® cannot correctly output pulses. |
---|---|
(2) | If the pulse output OFF time is set too short, count errors by connected counters, PLCs (Programmable Logic Controllers) may occur. |
Number of input point | 2 points *Not insulate between input terminals (COM is common.) | ||
---|---|---|---|
Insulation method | Designated insulation for input (insulate to the other functions) | ||
Input method | Contact/ non-voltage a contact or open-collector (Powered by an internal power supply) |
||
Input signal | Nonvoltage input |
・Impedance; Max. 1 kΩ (when short-circuit current: Max. 10 mA) ・Residual voltage when shorted: Max. 3 V ・Impedance when open: Min. 100 kΩ |
|
Input mode | IN1 | Pulse input or synchronized with output from outer device | |
IN2 | Pulse input | ||
Max. counting speed |
IN1 | 30 Hz (when pulse input) | |
IN2 | 2000 Hz / 30 Hz | ||
Min. input signal width |
IN1 | 16.7 ms ON:OFF ratio = 1:1 | |
IN2 | 0.25 ms (when 2000 Hz is set) / 16.7 ms (when 30 Hz is set) ON:OFF ratio = 1:1 |
||
Pre-scale | Decimal point | Under 3-digit | |
Range | 0.001 to 100.000 (set with setting mode) | ||
Output mode (when pulse output is selected) |
HOLD | ||
Protective elements | Zener diode |
Standard type supports only marked items(●).
Demand type | ・Peak demand ・IEC61557-12 demand● 1. Sliding block interval demand 2. Fixed block interval demand 3. Current demand ・30-min demand (set with setting mode) |
|||
---|---|---|---|---|
Demand monitor input type | Current transformer (CT) input (IEC demand /30-min demand)● Integral pulse input (only 30-min demand) (set with setting mode) |
|||
Demand time span (Note 1) |
IEC61557-12 demand● | 1 to 60 min. (set with setting mode) | ||
30-min demand | 30 min. (fixed) | |||
Demand measurement item | Present demand, Estimated demand (only 30-min demand) | |||
Demand calculate method (Note 2) |
Additional method / Average method (set with setting mode) |
|||
Demand data update cycle● | 1 min. | |||
Demand stand-by time (mask time) (Note 2) |
1 to 30 min. (set with setting mode) | |||
Display | IEC61557-12 demand● | Present demand [active/ reactive/ apparent/active(export)/ reactive(export)/ current] | ||
30-min demand | Power demand (active power), Estimated demand, Demand target value, Ratio of estimated demand, Current present demand, Monthly max. demand, Max. demand |
|||
Saved data | Monthly max. demand 12 records (12-month), Max.demand● | |||
Time span synchronized method | Clock synchronized (Pulse input to IN1) (set with setting mode) | |||
Synchronized signal input <IN1> |
Input terminal | IN1 | ||
Input method | Non-voltage a contact or open-collector (Powered by an internal power supply) |
|||
Pulse input condition | Pulse width | 50 ms or more | ||
Operatingvoltage/ current |
5 V DC 10 mA | |||
Signal common | Common (IN2; common to pulse input) | |||
Pulse input <IN2> |
Input terminal | IN2 | ||
Input method | Non-voltage a contact or open-collector (Powered by an internal power supply) |
|||
Pulse input signal |
50,000 pulse/kWh <An external pulse detector required> 2,000 pulse/kWh <An external pulse convertor required> |
|||
Pulse rate | 0.001 to 100.000 kWh/pulse | |||
Pulse input condition |
2000 Hz | Pulse width Pulse interval |
0.25 ms or more 0.5 ms or more (OFF: 0.25 ms or more) |
|
30 Hz | Pulse width Pulse interval |
16.7 ms or more 33.4 ms or more (OFF: 16.7 ms or more) |
||
Operating voltage/ current |
5 V DC 10 mA | |||
Signal common | Common (IN1; common to clock synchronized input) |
Notes:
1) | Available when sliding block interval demand or fixed block interval demand is selected. |
---|---|
2) | The time span can be arbitrarily set only for sliding block interval demand and fixed block interval demand. |
Interface | Conforming to RS-485 | |
---|---|---|
Communication method | Half-duplex | |
Synchronous system | Synchronous communication method | |
Isolation status | Isolated with the internal circuits | |
Protocol | MEWTOCOL, Modbus RTU, DL/T645-2007 (Note 1) (select with setting mode) |
|
Number of connected unit | 99 (max.) (Note 2) | |
Transmission distance | 1,200 m 3,937 ft (Note 3) | |
Transmission speed | 1,200 / 2,400 / 4,800 / 9,600 / 19,200 / 38,400 / 57,600 / 115,200 bps (select with setting mode) |
|
Transmission format |
Data length | 8bit (fixed) |
Parity | Not available / odd number / even number (select with setting mode) | |
Stop bit | 1bit, 2bit (select with setting mode) |
Notes:
1) | MEWTOCOL is the protocol for PLC from Panasonic. DL/T645 is the China powermeter standard. Only DL/T645-2007 is supported. |
---|---|
2) | For RS-485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co., Ltd.). When using SI-35, SI-35USB or PLC from our company (which can be connected up to 99 units), up to 99 can be connected. In case using this system with the other devices, up to 31 can be connected. |
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. |
Requests to customers (Automation Control Components & Industrial Device) [Excluding specific product]
Requests to customers (Automation Control Components & Industrial Device) [For specific product]
Requests to customers (FA Sensors & Components [Excluding motors])
Requests to customers (Dedicated to industrial motors)