LTWTN-112F0/T

更新时间:2024-10-29 22:28:14
品牌:MSYSTEM
描述:Power Transducer Series LT-UNIT

LTWTN-112F0/T 概述

Power Transducer Series LT-UNIT

LTWTN-112F0/T 数据手册

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MODEL: LTWTN  
= 6.666 × 10–3 [kWh/pulse]  
= 6.666 [Wh/pulse]  
Power Transducer Series LT-UNIT  
Check that the required pulse unit is within the available  
frequency range, 0.006 – 3.12 Hz.  
Input Range [W] ÷ (Calculated Pulse × 3600[s])  
= 750 ÷ (6.666 × 3600)  
WATT TRANSDUCER  
(self-powered)  
Functions & Features  
• Provides a DC output signal and a pulse totalizer signal in  
proportion to AC active power  
= 0.03125 [Hz]  
• Convenient pulse unit output (Wh×10  
n)  
[1] CONFIGURATION  
1: 3-phase / 3-wire  
• Measuring bidirectional power flow  
• DC output containing little ripple is ideal for computer  
input  
2: Single-phase / 2-wire  
3: Single-phase / 3-wire  
4: 3-phase / 4-wire  
• “Time division multiplication” method accepts distorted  
waveforms  
• Isolation up to 2000 V AC  
• High-density mounting  
[2] VT INPUT (unbalanced load)  
For 3-phase / 4-wire, phase voltages (e.g. 110 V / √3 ) are used.  
1: 110 V AC  
• Conforms to IEC 60688  
• No auxiliary power supply required  
(Not selectable for single-phase/3-wire system.)  
2: 220 V AC  
Typical Applications  
• Centralized monitoring and control of power management  
system in a manufacturing facility or building  
• SCR – Silicon Controlled Rectifier  
(Not selectable for single-phase/3-wire system.)  
4: 220 V / 380 V AC (3-phase/4-wire only)  
A: 100 V / 200 V AC  
(single-phase / 3-wire only)  
72  
(2.83)  
[3] CT INPUT (unbalanced load)  
Current  
1: 1 A AC  
2: 2 A AC  
5: 5 A AC  
111  
(4.37)  
[4] DC OUTPUT  
143 (5.63)  
Current  
mm (inch)  
A: 4 – 20 mA DC (Load resistance 500 Ω max.)  
D: 0 – 20 mA DC(Load resistance 500 Ω max.)  
F: 0 – 10 mA DC (Load resistance 1000 Ω max.)  
G: 0 – 1 mA DC (Load resistance 10 kΩ max.)  
J: 0 – 5 mA DC (Load resistance 2000 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: LTWTN–[1][2][3][4][5][6]  
ORDERING INFORMATION  
• Code number: LTWTN–[1][2][3][4][5][6]  
Specify a code from below for each of [1] through [6].  
(e.g. LTWTN-115A2/T/Q)  
• Special output range (For codes Z & 0)  
• Specify the specification for option code /Q  
(e.g. /C01)  
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.)  
• Use Ordering Information Sheet (No. ESU-3355).  
How to determine Pulse Unit  
[Example]  
3-phase / 3-wire, VT 3300/110 V, CT 250/5 A, calibration  
range 750 W  
10 [kWh/pulse] ÷ ((3300÷110) × (250÷5))  
LTWTN SPECIFICATIONS  
ES-3356 Rev.13 Page 1/5  
https://www.m-system.co.jp/  
MODEL: LTWTN  
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)  
ordering.  
[Example]  
3-phase / 3-wire, measuring wattage 750 kW,  
VT 3300/110 V, CT 250/5 A  
750 × 10 [W] ÷ ((3300÷110) × (250÷5)) = 500 [W]  
3
• Single-phase / 2-wire  
[5] PULSE OUTPUT (open collector)  
0: None  
INPUT  
VT / CT  
STD.RANGE  
CODE  
BURDEN (VA)  
USABLE RANGE  
VT  
CT  
ꢀ.1  
ꢀ.ꢂ  
ꢀ.±  
ꢀ.1  
ꢀ.ꢂ  
ꢀ.±  
1: 2.777 Hz at 100 % input  
1 / 1  
1 / ꢂ  
1 / ±  
ꢂ / 1  
ꢂ / ꢂ  
ꢂ / ±  
±1ꢀꢀ0  
±ꢂꢀꢀ0  
±±ꢀꢀ0  
±ꢂꢀꢀ0  
±2ꢀꢀ0  
±1ꢀꢀꢀ0  
±±ꢀ ꢁ ±1ꢂꢀ0  
±1ꢀꢀ ꢁ ±ꢂ2ꢀ0  
±ꢂ±ꢀ ꢁ ±ꢃꢀꢀ0  
±1ꢀꢀ ꢁ ±ꢂ2ꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±±ꢀꢀ ꢁ ±1ꢂꢀꢀ0  
2: Specify pulse unit (within 0.006 – 3.12 Hz)  
ꢂ.±  
[6] OPTIONS (multiple selections)  
Terminal Cover  
ꢂ.±  
blank: Without  
/T: With  
• Single-phase / 3-wire  
Other Options  
INPUT  
VT / CT  
STD.RANGE  
CODE  
BURDEN (VA)  
blank: none  
USABLE RANGE  
VT  
CT  
/Q: Option other than the above (specify the specification)  
A / 1  
A / ꢂ  
A / ±  
±ꢂꢀꢀ0  
±2ꢀꢀ0  
±1ꢀꢀ ꢁ ±ꢂ2ꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±±ꢀꢀ ꢁ ±1ꢂꢀꢀ0  
ꢀ.1/ph  
ꢀ.ꢂ/ph  
ꢀ.±/ph  
P1: ꢂ.±  
P: ꢀ.ꢂ  
SPECIFICATIONS OF OPTION: Q  
COATING (For the detail, refer to M-System's web site.)  
/C01: Silicone coating  
±1ꢀꢀꢀ0  
• 3-phase / 3-wire  
INPUT  
VT / CT  
STD.RANGE  
CODE  
BURDEN (VA)  
/C02: Polyurethane coating  
USABLE RANGE  
/C03: Rubber coating  
VT  
CT  
1 / 1  
1 / ꢂ  
1 / ±  
ꢂ / 1  
ꢂ / ꢂ  
ꢂ / ±  
±ꢂꢀꢀ0  
±2ꢀꢀ0  
±1ꢀꢀꢀ0  
±2ꢀꢀ0  
±4ꢀꢀ0  
±ꢂꢀꢀꢀ0  
±1ꢀꢀ ꢁ ±ꢂ2ꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±±ꢀꢀ ꢁ ±1ꢂꢀꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±2ꢀꢀ ꢁ ±ꢄꢃꢀ0  
±1ꢀꢀꢀ ꢁ ±ꢂ2ꢀꢀ0  
ꢀ.1/ph  
ꢀ.ꢂ/ph  
ꢀ.±/ph  
ꢀ.1/ph  
ꢀ.ꢂ/ph  
ꢀ.±/ph  
P1: ꢂ.±  
P3: ꢀ.ꢂ  
GENERAL SPECIFICATIONS  
Connection: M4 screw terminals (torque 1.2 N·m)  
P1: ꢂ.±  
P3: ꢀ.2  
Screw terminal: Chrome-plated steel  
Housing material: Flame-resistant resin (black)  
Isolation: Voltage input to current input to DC output to  
pulse output  
• 3-phase / 4-wire  
Computation: Time division multiplication  
Overrange output: Approx. -10 to +120 % at 1 – 5 V  
Zero adjustment(DC output): -5 to + 5 % (front)  
Span adjustment(DC output): 95 to + 105 % (front)  
INPUT  
VT / CT  
STD.RANGE  
CODE  
BURDEN (VA)  
VT CT  
USABLE RANGE  
1 / 1  
1 / ꢂ  
1 / ±  
ꢂ / 1  
ꢂ / ꢂ  
ꢂ / ±  
2 / 1  
2 / ꢂ  
2 / ±  
±ꢂꢀꢀ0  
±2ꢀꢀ0  
±1ꢀꢀꢀ0  
±2ꢀꢀ0  
±4ꢀꢀ0  
±ꢂꢀꢀꢀ0  
±4ꢀꢀ0  
±1ꢃꢀꢀ0  
±2ꢀꢀꢀ0  
±1ꢀꢀ ꢁ ±ꢂ2ꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±±ꢀꢀ ꢁ ±1ꢂꢀꢀ0  
±ꢂꢀꢀ ꢁ ±24ꢀ0  
±2ꢀꢀ ꢁ ±ꢄꢃꢀ0  
±1ꢀꢀꢀ ꢁ ±ꢂ2ꢀꢀ0  
±2ꢀꢀ ꢁ ±44ꢀ0  
±4ꢀꢀ ꢁ ±1ꢅꢃꢀ0  
±ꢂꢀꢀꢀ ꢁ ±22ꢀꢀ0  
P1 ꢁ Pꢀ.1/ph  
: ꢂ.±  
ꢀ.ꢂ/ph  
P3: ꢀ.1 ꢀ.±/ph  
P1 ꢁ Pꢀ.1/ph  
: ꢂ.±  
INPUT SPECIFICATIONS  
Frequency: 50 or 60 Hz  
ꢀ.ꢂ/ph  
P3: ꢀ.3 ꢀ.±/ph  
P1: ꢂ.± ꢀ.1/ph  
P: ꢀ.2 ꢀ.ꢂ/ph  
P3: ꢀ.2 ꢀ.±/ph  
VOLTAGE INPUT  
Operational range: 85 – 110 % of rating  
Overload capacity: 150 % of rating for 10 sec., 110 %  
continuous  
CURRENT INPUT  
Operational range: 0 – 120 % of rating  
Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4  
sec., 120 % continuous  
OUTPUT SPECIFICATIONS  
DC Output  
• DC Current: -10 – +20 mA DC  
Span: Min. 1 mA, max. 20 mA  
Offset: Max. 1.5 times span  
Load resistance: Output drive 10 V max.  
• DC Voltage: -10 – +12 V DC  
Minimum span: 5 mV  
How to determine Wattage Range  
Calibration Range [W] = Measuring Wattage ÷ ((VT Ratio) ×  
(CT Ratio))  
Check that the required calibration range is within the  
available range in the table. Specify this range when  
LTWTN SPECIFICATIONS  
ES-3356 Rev.13 Page 2/5  
https://www.m-system.co.jp/  
MODEL: LTWTN  
Offset: Max. 1.5 times span  
STANDARDS & APPROVALS  
EU conformity:  
Load resistance: Output drive 1 mA max. at ≥ 0.5 V  
Pulse output: Open collector  
EMC Directive  
0 Hz at 0 W (cutout at approx. 0.5 – 1.0 %)  
Rating: 35 V DC @ 100 mA  
EMI EN 61000-6-4  
EMS EN 61000-6-2  
ON voltage: ≤ 1 V at 100 mA  
Low Voltage Directive  
EN 61010-1  
ON duration: Max. 0.5 sec., min. 50 msec. (approx.)  
Frequency range: 0 – 2.777 Hz (0 – 100 %) standard; 0 –  
0.006 Hz through 3.12 Hz is possible.  
Measurement Category II (input)  
Pollution Degree 2  
• 2.777 Hz at 100 % Input  
Input to output: Reinforced insulation (300 V)  
RoHS Directive  
[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.  
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)  
Magnetic field (ext. origin) effect: ± 0.5 % (400 A/m)  
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)  
LTWTN SPECIFICATIONS  
ES-3356 Rev.13 Page 3/5  
https://www.m-system.co.jp/  
MODEL: LTWTN  
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  
7
8
9
13  
14  
11  
12  
7
8
13  
14  
11  
12  
+
+
PULSE OUTPUT  
PULSE OUTPUT  
V
V
v
v
+
+
U
u
DC OUTPUT  
DC OUTPUT  
K
K
K
k
1S  
1L  
3S  
3L  
k
l
1S  
1L  
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  
7
8
9
13  
14  
11  
12  
7
8
13  
14  
11  
12  
+
+
PULSE OUTPUT  
PULSE OUTPUT  
V
V
v
v
U
V
u
v
+
9
+
U
V
u
v
U
u
DC OUTPUT  
DC OUTPUT  
K
K
10  
K
K
K
k
1S  
1L  
2S  
2L  
1
2
5
6
k
k
1S  
1L  
2S  
2L  
3S  
3L  
1
2
3
4
5
6
CT  
l
k
k
l
CT  
l
L
L
l
l
L
L
L
LOAD  
Pulse Output Connection Example  
LOAD  
Open Collector  
+
13  
14  
LTWTN SPECIFICATIONS  
ES-3356 Rev.13 Page 4/5  
https://www.m-system.co.jp/  
MODEL: LTWTN  
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]  
10 (.39)  
16–M4 SCREW  
2–M4 MTG HOLE  
TERMINAL COVER (option /T)  
DIN RAIL  
35mm wide  
1
2
3
4
5
6
7
8
9
10  
11 12 13 14 15 16  
8 (.31)  
[4 (.16)]  
54 (2.13)  
72 (2.83)  
3
(.12)  
143 (5.63)  
• When mounting, no extra space is needed between units.  
Specifications are subject to change without notice.  
LTWTN SPECIFICATIONS  
ES-3356 Rev.13 Page 5/5  
https://www.m-system.co.jp/  

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