LWTN-22D0/Q 概述
Power Transducer Series L-UNIT
LWTN-22D0/Q 数据手册
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PDF下载MODEL: LWTN
= 6.666 × 10–3 [kWh/pulse]
= 6.666 [Wh/pulse]
Power Transducer Series L-UNIT
•From Pulse Rate 150 [pulses/kWh]
1 / 150 [pulses/kWh]
WATT TRANSDUCER
(self-powered, with pulse output)
= 6.666 × 10–3 [kWh/pulse]
= 6.666 [Wh/pulse]
Functions & Features
• Providing a DC output signal and pulse totalizer signal in
proportion to AC active power
•From Frequency 0.03125 Hz (at 100 %)
750 [W] / 0.03125 [H] × 3600 [s]
= 6.666 [Wh/pulse]
• Convenient pulse unit output (Wh×10
n)
• Measuring bidirectional power flow
• DC output containing little ripple is ideal for computer
[1] CONFIGURATION
1: 3-phase / 3-wire
input
• "Time division multiplication" method accepts distorted
waveforms
2: Single-phase / 2-wire
3: Single-phase / 3-wire
4: 3-phase / 4-wire
• Isolation up to 2000 V AC
• High-density mounting
Typical Applications
[2] INPUT (unbalanced load)
1: 110 V / 5 A AC
• Centralized monitoring and control of power management
system in a manufacturing facility or building
• SCR – Silicon Controlled Rectifier
2: 110 V / 1 A AC
3: 220 V / 1 A AC
4: 220 V / 5 A AC
5: 220 V / 380 V / 1 A AC (3-phase / 4-wire)
6: 220 V / 380 V / 5 A AC (3-phase / 4-wire)
7: 110 V / 190 V / 1 A AC (3-phase / 4-wire)
8: 110 V / 190 V / 5 A AC (3-phase / 4-wire)
A: 100 V / 200 V / 1 A AC (single-phase / 3- wire)
B: 100 V / 200 V / 5 A AC (single-phase / 3- wire)
75
(2.95)
75
(2.95)
112
[3] DC OUTPUT
Current
(4.41)
mm (inch)
A: 4 – 20 mA DC (Load resistance 600 Ω max.)
B: 2 – 10 mA DC (Load resistance 1200 Ω max.)
C: 1 – 5 mA DC (Load resistance 2400 Ω max.)
D: 0 – 20 mA DC (Load resistance 600 Ω max.)
E: 0 – 16 mA DC (Load resistance 750 Ω max.)
F: 0 – 10 mA DC (Load resistance 1200 Ω max.)
G: 0 – 1 mA DC (Load resistance 12 kΩ max.)
J: 0 – 5 mA DC (Load resistance 2400 Ω max.)
FW: -10 – +10 mA DC (Load resistance 1000 Ω max.)
GW: -1 – +1 mA DC (Load resistance 10 kΩ max.)
JW: -5 – +5 mA DC (Load resistance 2000 Ω max.)
Z: Specify current (See OUTPUT SPECIFICATIONS)
Voltage
MODEL: LWTN–[1][2][3][4][5]
ORDERING INFORMATION
• Code number: LWTN–[1][2][3][4][5]
Specify a code from below for each [1] through [5].
(e.g. LWTN-11A2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01)
• Calibration range (e.g. -750 – +750 W)
• VT ratio, CT ratio (e.g. VT 3300/110 V, CT 250/5 A)
• Special DC output range (For codes Z & 0)
• Pulse output (e.g. 6.666 Wh/pulse)
How To Determine Pulse Unit
1: 0 – 10 mV DC (Load resistance 10 kΩ min.)
2: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3: 0 – 1 V DC (Load resistance 1000 Ω min.)
4: 0 – 10 V DC (Load resistance 10 kΩ min.)
5: 0 – 5 V DC (Load resistance 5000 Ω min.)
6: 1 – 5 V DC (Load resistance 5000 Ω min.)
1W: -10 – +10 mV DC (Load resistance 10 kΩ min.)
2W: -100 – +100 mV DC (Load resistance 100 kΩ min.)
[example]
3-phase / 3-wire, VT 3300/110 V, CT 250/5 A,
calibration range 750 W
•From Pulse Unit 10 [kWh/pulse]
10 [kWh/pulse] / (3300/110) × (250/5)
http://www.m-system.co.jp/
LWTN SPECIFICATIONS
ES-1976 Rev.2 Page 1/5
MODEL: LWTN
3W: -1 – +1 V DC (Load resistance 1000 Ω min.)
4W: -10 – +10 V DC (Load resistance 10 kΩ min.)
5W: -5 – +5 V DC (Load resistance 5000 Ω min.)
0: Specify voltage (See OUTPUT SPECIFICATIONS)
[example]
3-phase / 3-wire, measuring wattage 750 kW,
VT 3300 / 110 V, CT 250 / 5 A
(750 × 10 [W]) ÷ ((3300 / 110) × (250 / 5)) = 0 – 500 [W]
3
I INPUT RANGE
• 3-phase / 3-wire
[4] PULSE OUTPUT (open collector)
0: None
BURDEN (VA)
VOLT. CURR.
INPUT
AVAILABLE
RANGE
STD.RANGE
1: 2.777 Hz at 100 % input
110V/1A
110V/5A
220V/1A
220V/5A
200 W
000 W
0.1/ph
P1: 2.5
100
500
–
–
–
–
240
1200 W
480
2400 W
W
P3: 0.2
1
0.5/ph
2: Specify pulse unit (within 0.006 – 3.12 Hz)
400 W
0.1/ph
P1: 2.5
200
W
P3: 0.4
2
000 W
0.5/ph
1000
[5] OPTIONS
blank: none
• Single-phase / 2-wire
BURDEN (VA)
VOLT. CURR.
INPUT
AVAILABLE
RANGE
/Q: With options (specify the specification)
STD.RANGE
110V/1A
110V/5A
220V/1A
220V/5A
100 W
500 W
200 W
50
250
100
500
–
–
–
–
120 W
600 W
240 W
1200 W
0.1
2.5
0.5
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
0.1
2.5
0.5
1
000 W
• Single-phase / 3-wire
/C02: Polyurethane coating
BURDEN (VA)
VOLT. CURR.
AVAILABLE
RANGE
INPUT
/C03: Rubber coating
STD.RANGE
TERMINAL SCREW MATERIAL
/S01: Stainless steel
200 W
000 W
200V/1A
200V/5A
0.1/ph
P1: 2.5
100
500
–
–
240 W
P2: 0.2
1
0.5/ph
1200 W
I INPUT RANGE
• 3-phase / 4-wire
GENERAL SPECIFICATIONS
Construction: Stand-alone; terminal access at the front
Connection: M3.5 screw terminals (torque 0.8 N·m)
Screw terminal: Nickel-plated steel (standard) or stainless
steel
BURDEN (VA)
VOLT. CURR.
INPUT
AVAILABLE
RANGE
STD.RANGE
0.1
/phase
110V
__
P1 – P2
: 2.5
/1A
/5A
/1A
/5A
/1A
/5A
/1A
/5A
200 W
1000 W
350 W
100
500
–
–
–
–
–
–
–
–
240 W
1200 W
420 W
√ 3
P3
: 0.1
0.5
/phase
110V
__
√ 3
Housing material: Flame-resistant resin (black)
Isolation: Voltage input to current input to DC output to
pulse output
0.1
/phase
190V
__
√ 3
P1
175
: 2.5
P2, P3
: 0.2
Computation: Time division multiplication
Overrange output: Approx. -10 – +120 % at 1 – 5 V
Zero adjustment(DC output): -5 to + 5 % (front)
Span adjustment(DC output): 95 to + 105 % (front)
0.5
/phase
190V
__
√ 3
1750 W
400 W
875
2100 W
480 W
0.1
/phase
220V
__
√ 3
P1 – P2
: 2.5
P3
200
0.5
/phase
220V
__
√ 3
2000 W
700 W
1000
350
2400 W
840 W
: 0.3
380V
0.1
/phase
INPUT SPECIFICATIONS
Frequency: 50 or 60 Hz
__
P1
√ 3
: 2.5
P2, P3
: 0.4
380V
__
√ 3
0.5
/phase
• Voltage Input
3500 W
1750
4200 W
Operational range: 85 – 110 % of rating
Overload capacity: 150 % of rating for 10 sec., 110 %
continuous
OUTPUT SPECIFICATIONS
■ DC Output
• Current Input
Operational range: 0 – 120 % of rating
Overload capacity: 1000 % of rating for 3 sec., 200 % for 10
sec., 120 % continuous
• DC Current: -10 – + 20 mA DC
Span: Min. 1 mA, max. 20 mA
Offset: Max. 1.5 times span
■ How To Determine Wattage Range
Calibration Range [W] = (Measuring Wattage) /
((VT Ratio) × (CT Ratio))
Load resistance: Output drive 12 V maximum; 10 V for [±]
output
• DC Voltage: -10 – +12 V DC
Minimum span: 5 mV
Check that the required calibration range is within the
available range in the table.
Offset: Max. 1.5 times span
http://www.m-system.co.jp/
LWTN SPECIFICATIONS
ES-1976 Rev.2 Page 2/5
MODEL: LWTN
Load resistance: Output drive 1 mA max. at ≥ 0.5 V
■ Pulse output: Open collector; 0 Hz at 0 W
(cutout at approx. 0.5 – 1.0 %)
Rating: 35 V DC @ 100 mA
ON voltage: ≤ 1 V at 100 mA
ON duration: Max. 0.5 sec., min. approx. 50 msec.
Frequency range:
0 – 2.777 Hz (0 – 100 %) standard; 0 – 0.006 Hz through
3.12 Hz is possible.
•2.777 Hz at 100 % Input
[example] 1000 W calibration range
2.777 [Hz] × 3600 [s] / 1 [kW] = 10000 [pulses/kWh]
•Specified Pulse Unit: Refers to how much electrical energy
(kWh) consumption at the primary of the VT and CT
corresponds to the single output pulse per hour from the
transducer.
Output Frequeny [Hz] = Calibration Range [kW] × VT Ratio
× CT Ratio / Pulse Unit [kWh/pulse] × 3600 [s]
■ OPERATION DIAGRAM (example)
OUT
20 mA
OUT
10 V
12
4
5
0
500
1000 W
0
500
1000 W
OUT
20 mA
OUT
+10 V
12
4
0
-10 V
-1000 W
-1000 W
0
+1000 W
0
+1000 W
INSTALLATION
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 450 g (0.99 lb)
PERFORMANCE in percentage of span
Accuracy: ±0.5 % (at 23°C ±10°C or 73.4°F ±18°F,
45 – 65 Hz)
Response time: ≤ 2 sec. (0 – 100 % ±1 %)
Ripple: 0.5 %p-p max.
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute
(voltage input to current input to DC output to pulse output
to ground)
Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV
(input to output or ground)
http://www.m-system.co.jp/
LWTN SPECIFICATIONS
ES-1976 Rev.2 Page 3/5
MODEL: LWTN
CONNECTION DIAGRAM
■
3-PHASE/3-WIRE
■
SINGLE-PHASE/2-WIRE
SOURCE
SOURCE
1
2
3
1
2
VT
VT
FUSE
FUSE
U
V
u
v
P1
P2
U
u
P1
P2
P3
+
+
14
15
16
7
8
14
15
7
8
PULSE OUTPUT
PULSE OUTPUT
V
V
v
v
–
+
–
–
+
–
11
12
11
12
U
u
DC OUTPUT
DC OUTPUT
K
K
K
1S
1L
3S
3L
1S
1L
k
k
l
1
2
5
6
1
2
k
CT
CT
L
l
l
L
L
LOAD
LOAD
■
SINGLE-PHASE/3-WIRE
■
3-PHASE/4-WIRE
SOURCE
SOURCE
1
N
2
N
1
2
3
VT
VT
FUSE
FUSE
U
u
P1
P0
P2
U
V
u
v
P1
P2
P3
P0
+
+
14
15
16
7
8
14
15
16
13
7
8
PULSE OUTPUT
PULSE OUTPUT
V
V
v
v
–
–
U
V
u
v
+
–
+
–
11
12
11
12
U
V
u
v
U
u
DC OUTPUT
DC OUTPUT
K
K
K
K K
1S
1L
2S
2L
k
1
2
5
6
k
1S
1L
2S
2L
3S
3L
k
k
k
1
2
3
4
5
6
CT
CT
l
l
L
L
l
l
l
L
L
L
LOAD
Pulse Output Connection Example
LOAD
■
Open Collector
+
7
-
8
http://www.m-system.co.jp/
LWTN SPECIFICATIONS
ES-1976 Rev.2 Page 4/5
MODEL: LWTN
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)
8 (.31)
M3.5 SCREW
(Only on the used terminals)
2–5.8 (.23) dia. or
2–4.8 (.18) dia.
MTG HOLE
8 (.31) deep
DIN RAIL
35mm wide
1
9
2
3
4
5
6
7 8
TERMINAL
COVER
10 11 12 13 14 15 16
112 (4.41)
[3.3 (.13)]
75 (2.95)
•When mounting, no extra space is needed between units.
MOUNTING REQUIREMENTS unit: mm (inch)
■ M5 SCREWS
■ M4 SCREWS
60 (2.36)
60 (2.36)
2–M5
2–M4
Specifications are subject to change without notice.
http://www.m-system.co.jp/
LWTN SPECIFICATIONS
ES-1976 Rev.2 Page 5/5
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