LTWTN-112A0/Q

LTWTN MSYSTEM | Alldatasheet

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MODEL: LTWTN LTWTN SPECIFICATIONS ES-3356 Rev.13 Page 1/5 https://www.m-system.co.jp/ Power Transducer Series LT-UNIT WATT TRANSDUCER (self-powered) 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
• No auxiliary power supply required Typical Applications
• Centralized monitoring and control of power management system in a manufacturing facility or building
• SCR – Silicon Controlled Rectifier 143 (5.63) 111 (4.37) (2.83) mm (inch) 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)
• 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 = 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]) = 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: 110 V AC (Not selectable for single-phase/3-wire system.) 2: 220 V AC (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) [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.)

MODEL: LTWTN LTWTN SPECIFICATIONS ES-3356 Rev.13 Page 2/5 https://www.m-system.co.jp/ 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] OPTIONS (multiple selections) Terminal Cover blank: Without /T: With Other Options blank: none /Q: Option other than the above (specify the specification) SPECIFICATIONS OF OPTION: Q COATING (For the detail, refer to M-System's web site.) /C01: Silicone coating /C02: Polyurethane coating /C03: Rubber coating GENERAL SPECIFICATIONS Connection: M4 screw terminals (torque 1.2 N·m) Screw terminal: Chrome-plated steel Housing material: Flame-resistant resin (black) Isolation: Voltage input to current input to DC output to pulse output 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 SPECIFICATIONS Frequency: 50 or 60 Hz ■ 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 ■ 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 ordering. [Example] 3-phase / 3-wire, measuring wattage 750 kW, VT 3300/110 V, CT 250/5 A

• Single-phase / 2-wire INPUT USABLE RANGE BURDEN (VA) VT / CT STD.RANGE VT CT CODE 1 / 1 ±100W ±50 – ±120W 0.1 1 / 2 ±200W ±100 – ±240W 2.5 0.2 1 / 5 ±500W ±250 – ±600W 0.5 2 / 1 ±200W ±100 – ±240W 0.1 2 / 2 ±400W ±200 – ±480W 2.5 0.2 2 / 5 ±1000W ±500 – ±1200W 0.5
• Single-phase / 3-wire INPUT USABLE RANGE BURDEN (VA) VT / CT STD.RANGE VT CT CODE A / 1 ±200W ±100 – ±240W P1: 2.5 0.1/ph A / 2 ±400W ±200 – ±480W P2: 0.2 0.2/ph A / 5 ±1000W ±500 – ±1200W 0.5/ph
• 3-phase / 3-wire INPUT USABLE RANGE BURDEN (VA) VT / CT STD.RANGE VT CT CODE 1 / 1 ±200W ±100 – ±240W P1: 2.5 0.1/ph 1 / 2 ±400W ±200 – ±480W P3: 0.2 0.2/ph 1 / 5 ±1000W ±500 – ±1200W 0.5/ph 2 / 1 ±400W ±200 – ±480W P1: 2.5 0.1/ph 2 / 2 ±800W ±400 – ±960W P3: 0.4 0.2/ph 2 / 5 ±2000W ±1000 – ±2400W 0.5/ph
• 3-phase / 4-wire INPUT USABLE RANGE BURDEN (VA) VT / CT STD.RANGE VT CT CODE 1 / 1 ±200W ±100 – ±240W P 1 – P2 0.1/ph 1 / 2 ±400W ±200 – ±480W : 2.5 0.2/ph 1 / 5 ±1000W ±500 – ±1200W P 3: 0.1 0.5/ph 2 / 1 ±400W ±200 – ±480W P 1 – P2 0.1/ph 2 / 2 ±800W ±400 – ±960W : 2.5 0.2/ph 2 / 5 ±2000W ±1000 – ±2400W P 3: 0.3 0.5/ph 4 / 1 ±800W ±400 – ±880W P 1: 2.5 0.1/ph 4 / 2 ±1600W ±800 – ±1760W P 2: 0.4 0.2/ph 4 / 5 ±4000W ±2000 – ±4400W P 3: 0.4 0.5/ph 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

MODEL: LTWTN LTWTN SPECIFICATIONS ES-3356 Rev.13 Page 3/5 https://www.m-system.co.jp/ Offset: Max. 1.5 times span 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 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. 500 1000 W0 OUT 20 mA 500 1000 W0 OUT 10 V 0 +1000 W-1000 W OUT 20 mA 0 +1000 W-1000 W OUT +10 V -10 V ■ OPERATION DIAGRAM (example) 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) STANDARDS & APPROVALS EU conformity: EMC Directive EMI EN 61000-6-4 EMS EN 61000-6-2 Low Voltage Directive EN 61010-1 Measurement Category II (input) Pollution Degree 2 Input to output: Reinforced insulation (300 V) RoHS Directive

MODEL: LTWTN LTWTN SPECIFICATIONS ES-3356 Rev.13 Page 4/5 https://www.m-system.co.jp/ CONNECTION DIAGRAM LOAD 1 2 3 SOURCE P2 V P1 U v uFUSE VT V v U u k l CT L K k l L K PULSE OUTPUT DC OUTPUT LOAD 1 2 SOURCE P2 V P1 U v uFUSE VT k l CT L K PULSE OUTPUT LOAD

1 N 2

v uFUSE VT V v U u k l CT L K k l L K PULSE OUTPUT LOAD

1 N 2 3

v uFUSE VT V v P3 U u V v P0 U u k l CT L K k l L K k l L K PULSE OUTPUT DC OUTPUT DC OUTPUT DC OUTPUT ■ Open Collector Pulse Output Connection Example ■ SINGLE-PHASE/2-WIRE ■ SINGLE-PHASE/3-WIRE ■ 3-PHASE/4-WIRE ■ 3-PHASE/3-WIRE

MODEL: LTWTN LTWTN SPECIFICATIONS ES-3356 Rev.13 Page 5/5 https://www.m-system.co.jp/ EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch] 1 2 3 4 5 6 11 12 13 14 15 16 7 8 9 10 54 (2.13) (.12) DIN RAIL 35mm wide 8 (.31) 2–M4 MTG HOLE 98 (3.86) 80 (3.15) 111 (4.37) 16–M4 SCREW TERMINAL COVER (option /T) 10 (.39)

• When mounting, no extra space is needed between units. Specifications are subject to change without notice.