Thiết bị chuyển đổi tín hiệu, Model: LTWT-111A0-L3/T

WATT TRANSDUCER

Functions & Features
• Provides a DC output signal and a pulse totalizer signal in proportion to AC active power
• Convenient pulse unit output (Wh×10n)
• Measuring bidirectional power flow
• DC output containing little ripple is ideal for computer input
• “Time division multiplication” method accepts distorted waveforms
• Isolation up to 2000 V AC
• High-density mounting
• Conforms to IEC 60688
Typical Applications
• Centralized monitoring and control of power management system in a manufacturing facility or building
• SCR – Silicon Controlled Rectifier
 

MODEL: LTWT–[1][2][3][4][5]–[6][7]

ORDERING INFORMATION
• Code number: LTWT–[1][2][3][4][5]–[6][7]
Specify a code from below for each [1] through [7].
  (e.g. LTWT-115A2-R/T/Q)
• Specify the specification for option code /Q
  (e.g. /C01)
Use Ordering Information Sheet (No. ESU-3355).
• Special output range (For codes Z & 0)

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))
= 6.666 × 10–3 [kWh/pulse]
= 6.666 [Wh/pulse]
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)
= 0.03125 [Hz]

[1] CONFIGURATION
1: 3-phase / 3-wire
2: Single-phase / 2-wire
3: Single-phase / 3-wire
4: 3-phase / 4-wire

[2] VT INPUT (unbalanced load)
For 3-phase / 4-wire, phase voltages (e.g. 110 V / √3 ) are used.
1: 100, 110, 115, 120 V AC
(Not selectable for single-phase / 3-wire system.)
2: 190, 200, 210, 220, 230, 240 V AC
(Not selectable for single-phase / 3-wire system.)
4: 380, 400, 415, 430, 440, 480 V AC
(Not selectable for single-phase / 3-wire system.)
A: 100 V / 200 V AC
(single-phase / 3-wire only)

[3] CT INPUT (unbalanced load)
Current
1: 1 A AC
2: 2 A AC
5: 5 A AC

[4] DC OUTPUT
Current
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
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.)
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)

[5] PULSE OUTPUT (open collector)
0: None
1: 2.777 Hz at 100 % input
2: Specify pulse unit (within 0.006 – 3.12 Hz)

[6] AUXILIARY POWER SUPPLY
AC Power
K3: 100 – 120V AC
(Operational voltage range 85 - 132 V, 47 - 66 Hz)
L3: 200 – 240V AC
(Operational voltage range 170 - 264 V, 47 - 66 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
V: 48 V DC
(Operational voltage range 48 V ± 10 % , ripple 10 % p-p max.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)
(CE not available)

[7] OPTIONS (multiple selections)
Terminal Cover
blank: Without
/T: With
Custom specification
(Refer to the custom specification list for difference
of specification and combination of code numbers.)
blank: none
/X1: Input range
/X2: Input span
Other Options
blank: none
/Q: Option other than the above (specify the specification)

CÔNG TY CỔ PHẦN KỸ THUẬT VÀ THƯƠNG MẠI THIẾT BỊ CÔNG NGHIỆP NTD
VPGD: Số 9, Ngõ 651/82/3 Minh Khai, Hai Bà Trưng, Hà Nội.
Hotline: 0971961212
Mail: sales@ntd-automation.com