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产品名称：
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KW8M环保型功率表
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型 号：
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KW8M
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价 格：
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品 牌：
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Lineup with new energy saving and environmentally friendly features!
Features (AKW8111/AKW8111H)
1.Direct measurement of 400 V power loads
2.Three-phase, four-wire system compatibility
3.Improved measurement function
- Instantaneous electrical power
- Integrated electrical power
- Each phase voltage and current
- Frequency
- Power factor
4.Simultaneous power and pulse measurement
5.Supports Networking
- RS485
- Modbus Protocol
- MEWTOCOL
| * |
Modbus is a communication protocol developed for PLCs by Modicon Inc. |
Features (AKW8111H ONLY)
1.Includes all the features of AKW8111.
2.Built-in memory
Log data can be saved to memory of main unit.
3.Built-in battery (for memory backup)
Protects log data and time
4.Optional functions (3 items) added
- Each integrated electric power by month, day and hour
- Arbitrary integrated active electrical power
- Calendar timer function
4.Simultaneous power and pulse measurement
5.Supports Networking
- RS485
- Modbus Protocol
- MEWTOCOL
| * |
Modbus is a communication protocol developed for PLCs by Modicon Inc. | Main unit
| Phase and wire system |
Operating power
supply |
Measured
voltage input |
Measured
current input |
Current transformer |
Terminal type |
Log function |
Model No. |
Single-phase two-wire system
Single-phase three-wire system
Three-phase three-wire system
Three-phase four-wire system |
100 to 240 V AC,
50/60 Hz |
400 V AC
100/200 V AC |
5 A,
100 A,
250 A,
400 A |
Dedicated CT type
[5 A, 50 A (common)/
100 A/250 A/400 A] |
Screw terminal
(M3 “+” screw) |
Not available |
AKW8111 |
| Available |
AKW8111H | Dedicated current transformer (CT)
| Rated primary current |
Part No. |
| 5A/50A |
AKW4801 |
| 100A |
AKW4802 |
| 250A |
AKW4803 |
| 400A |
AKW4804 | Options
| Product name |
Model No. |
| Terminal cover |
AKT8801 |
| Battery |
AFC8801 |
Measurement items
| Item |
Unit |
Data range (Display range) |
Integrated
electric power |
Active power |
kWh |
0.00 to 9999999.9 |
| Reactive power |
kvarh |
0.00 to 9999999.9 |
| Apparent power |
kVAh |
0.00 to 9999999.9 |
Instantaneous
electric power |
Active power |
kW |
0.00 to 999999.99 |
| Reactive power |
kvar |
–99999.99 to 0.00 to 999999.99 |
| Apparent power |
kVA |
0.00 to 999999.99 |
| Current |
CT1 current |
A |
0.0 to 6000 |
| CT2 current |
A |
0.0 to 6000 |
| CT3 current |
A |
0.0 to 6000 |
| Voltage |
Voltage between P1 and P0 |
V |
0.0 to 9999 |
| Voltage between P2 and P0 |
V |
0.0 to 9999 |
| Voltage between P3 and P0 |
V |
0.0 to 9999 |
| Electricity charge* |
- |
0.00 to 99999999 |
| Power factor |
Display |
0.00 to 1.00 (Distiguishes if ahead (LEAD) or behind (LAG).) |
| Communication |
–1.00 to 0.00 to 1.00 (Within range of phase angle θ = –90 to 0 to +90°) |
| Frequency |
Hz |
47.5 to 63.0 |
| Hour meter |
ON time |
Time |
0.0 to 99999.9 |
| OFF time |
| Pulse counter |
- |
0 to 99999999 |
| * |
Eco-POWER METER is designed chiefly for managing energy saving.
It is not intended to be used for billing. |
Main unit
| Item |
Specifications |
| Rated operating voltage |
100 to 240V AC |
| Rated frequency |
50/60Hz common |
| Rated power consumption |
8VA |
| Inrush current |
30 A or less (200 VAC at 25°C) |
| Allowable operating voltage range |
10ms |
| Allowable momentary power-off time |
–10 to +50°C (–25°C to +70°C at storage) |
| Ambient temperature |
30 to 85%RH (at 20°C non-condensing) |
| Breakdown voltage (initial) |
Between the isolated circuits: 2000V for 1min
Note: Cut-off current: 10mA
However protective varistor excluded. |
• Outer edge (case) ⇔ All terminals
• Insulated circuit
• GND ⇔ All other terminals
• Operating power supply terminals ⇔ Analog input terminals*1
• Operating power supply terminals ⇔ Pulse input terminal
• RS485 ⇔ All other terminals
• Pulse output terminals ⇔ All other terminals |
| Insulation resistance (initial) |
Between the isolated circuits:100MΩ or more
(measured at 500V DC) |
| 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 |
8-digit, 7-segment LED |
| Power failure memory method |
EEP-ROM (more than 100,000 overwrite) |
| Size |
48 × 96 × 98.5 mm |
| Weight*2 |
AKW8111: approx.235g |
AKW8111H: approx.250g |
| *1 |
Analog input terminals: No.11 to 20 / Pulse input terminal: No.4 and 5 |
| *2 |
Without mounting bracket |
Input specifications
| Item |
Specifications |
Measured
input voltage |
Rating |
Single-phase two-wire: 0 to 440V AC (Line voltage)
Single-phase three-wire: 0 to 220V AC (Phase voltage)
Three-phase three-wire: 0 to 440V AC (Line voltage)
Three-phase four-wire: 0 to 254V AC (Phase voltage)
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| Allowance |
85% to 120% of rated input voltage |
Allowable measurement
voltage |
Single-phase two-wire: 0 to 528V AC (Line voltage)
Single-phase three-wire: 0 to 264V AC (Phase voltage)
Three-phase three-wire: 0 to 528V AC (Line voltage)
Three-phase four-wire: 0 to 300V AC (Phase 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 440V system. (Secondary side: 110V) |
Measured
input current |
Primary side rating |
• 5A/50A/100A/250A/400A (In case using dedicated CT.) (Select with setting mode)
• 1 to 4000A (Set with setting mode)
*Use a commercial CT with secondary side current of 5A when measure 400A or more.
*Accuracy coverage: 10 to 100% of rated current of CT |
Special
functions |
Cut-off current |
1.0 to 50.0%F.S. (Select with setting mode) |
Current threshold for hour
meter |
1.0 to 100.0%F.S. (Select with setting mode) |
Accuracy
(without
error in CT
and VT)
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Instantaneous electric power
(active/reactive/apparent)
Integrated electric power
(active/reactive/apparent)
Voltage
Current
Electricity charge |
±2.5% F.S. ±1digit (at 20°C, rated input, rated frequency, power-factor 1)
*Accuracy coverage: 10 to 100% of rated current of CT |
| Hour meter |
±0.01%±1digit (at 20°C) (In case power on start or current energizing: ±0.01%+1s±1 digit) |
| Temperature characteristics |
±1.5% F.S. /10°C ±1digit (Range of –10 to 50°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) |
Pulse input specifications
| Item |
Specifications |
| Input mode |
Addition (Fixed) |
| Max. counting speed |
2kHz/30Hz (Select with setting mode) |
| Pulse input |
Min. input signal width:
0.25ms (When 2kHz selected)/
16.7ms (When 30Hz selected)
ON:OFF ratio = 1 : 1 |
| Input signal |
Contact/No contact (open collector)
Impedance when shorted: 1kΩ
Residual voltage when shorted: Max. 2V
Impedance when open: 100kΩ |
| Output mode |
HOLD (Over count) |
| Number of digit |
8-digit (0 to 99999999) |
Output specifications
| 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 |
0.001/0.01/0.1/1/10/100kWh/
Alarm(AL-P)/Counter(Cnt)
(Selectable with setting mode) |
| * |
We recommend the setting of minimum unit for pulse output for measurement shown as below.
Output pulse: 4 pulse or less per 1sec. |
Communication Specifications
| Item |
Specifications |
| Interface |
Conforming to RS485 |
| Protocol |
MEWTOCOL/MODBUS(RTU) |
| Isolation status |
Isolated with the internal circuit |
| Number of connected units |
99 (max.)*2 *3 |
| Transmission distance |
1200m (max.)*1 |
| Transmission speed |
19200/9600/4800/2400bps (selectable with setting mode) |
Log function
Memory of main unit |
Data length |
8bit/7bit (selectable with setting mode)*4 |
| Parity |
Not available / Odd number / Even number (selectable with setting mode) |
| Stop bit |
1bit (fixed) |
| Communication method |
Half-duplex |
| Synchronous system |
Synchronous communication method |
| Ending resistance |
Approx. 120Ω (built-in) |
Factory settings
| Protocol |
Station no. |
Transmission speed
(Baud rate) |
Data length |
Parity |
Stop bit |
| MEWTOCOL |
1 |
19200 bps |
8-bit |
Odd number |
1 bit (fixed) |
| *1 |
Please check with the actual devices when some commercial devices with RS485 interface are connected. The number of connected devices, transmission distance, transmission speed may be different according to using transmission line. |
| *2 |
For RS485 converter on the computer side, we recommend SI-35 and SI-35USB (from LINE EYE Co., Ltd.). |
| *3 |
When using SI-35,SI-35USB or PLC from Panasonic Electric Works Co., Ltd. (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. |
| *4 |
With MODBUS(RTU) protocol, it works only with 8bit. |
Optional specifications (AKW8111H only)
| Item |
Specifications |
Log function
Memory of main unit |
Automatic
logging |
Save cycle |
60 min. |
| Save data |
Integrated active power, Integrated reactive power, Integrated apparent power |
| Save data amount |
Max. 2232 records *3 months |
| Display |
Integrated electric power by month, Integrated electric power by day, Integrated electric power by hour |
Selected
logging*1 |
Save cycle |
1, 5, 10, 15, 30, 60 min. |
| Save data |
Integrated active power, Integrated reactive power, Integrated apparent power, Instantaneous voltage,
Instantaneous current, Pulse count value |
| Save data amount |
Max. 2160 records *1.5 days (when save frequency is 1 min.) |
| Calendar timer function |
Time accuracy monthly accuracy: 240 sec. (at –10°C)
monthly accuracy: 70 sec. (at 25°C)
monthly accuracy: 240 sec. (at 50°C) |
| Arbitrary integrated active power |
Integrated active power in arbitrary time Display range: 0.00 to 9999999.9 kWh |
| Content of battery backup |
Time measurement and log data retained |
| Battery life*2 *3 |
About 5 years (at ambient temperature 25°C) |
| *1 |
Another software is required to check selectable log data saved in the built-in memory. The recommended software, KW Monitor, is available for download from here. |
| *2 |
When battery power is reduced, “E” is blinking. Please change the battery according to the battery replacement procedure. |
| *3 |
Battery life will shorten if this product is used in high temperature environments. |
Dedicated Current Transformer (CT) Specifications
| Model number |
AKW4801 |
AKW4802 |
AKW4803 |
AKW4804 |
| Primary side rated current |
5A/50A |
100A |
250A |
400A |
| Rated secondary side current |
1.67mA/16.7mA |
33.3mA |
125mA |
200mA |
| Winding (Turn) |
3000 |
3000 |
2000 |
2000 |
| Ratio error |
±1.0%F.S. |
| Hole Dia (mm) |
10 dia. |
16 dia. |
24 dia. |
36 dia. |
| Breakdown voltage (initial) |
1000V AC/1min
(Between through hole and
output lead wire) |
2000V AC/1min
(Between through hole and output lead wire) |
| Insulation resistance (initial) |
Min. 100MΩ (at DC500V) (Between through hole and output lead wire) |
| Functional vibration resistance |
10 to 55Hz (1cycle/minute) single amplitude of 0.15mm (10 min. on X, Y and Z axes) |
| Destructive vibration resistance |
10 to 55Hz (1cycle/ minute) single amplitude of 0.375mm (1 hrs. on X, Y and Z axes) |
| Functional shock resistance |
Min. 98m/s2 (4 times on X, Y and Z axes) |
| Destructive shock resistance |
Min. 294m/s2 (5 times on X, Y and Z axes) |
| Output protection level |
±7.5V with clamp element |
±3.0V with clamp element |
| Permissible clamping frequency |
Approx. 100 times |
| Ambient temperature |
–10 to +50°C (without frost and non-condensing) |
| Storage temperature |
–20 to +60°C (without frost and non-condensing) |
| Ambient humidity |
35 to 85%RH (at 20°C non-condensing) |
| Weight |
Approx. 50g
(Trunk cable included) |
Approx. 80g
(Trunk cable included) |
Approx. 200g
(Trunk cable included) |
Approx. 300g
(Trunk cable included) |
| * |
Dedicated current transformers (CT), AKW4801, AKW4802, AKW4803, AKW4804, are dedicated for low voltage under 440V system. They can not be used for high voltage circuit. In case measuring high voltage circuit, make a 2-step construction by combination of a commercial CT of secondary side current 5A for high voltage and the dedicated CT for 5A (AKW4801).
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Unit
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inch
- External Dimensions
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