18WT MSYSTEM | Alldatasheet

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MODEL: 18WT 18WT SPECIFICATIONS ES-1866 Rev.7 Page 1/4 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK WATT TRANSDUCER Functions & Features

  • Providing two DC output signals in proportion to AC active power
  • Measuring bidirectional power flow
  • DC output containing little ripple is ideal for computer input
  • "Time division multiplication" method accepts distorted waveforms Typical Applications
  • Centralized monitoring and control of power management system in a manufacturing facility or building
  • SCR – Silicon Controlled Rectifier MODEL: 18WT–[1][2]66–R

ORDERING INFORMATION

  • Code number: 18WT-[1][2]66-R Specify a code from below for each of [1] and [2]. (e.g. 18WT-1166-R)
  • Calibration range (e.g. 0 – 1000 W)
  • VT ratio, CT ratio (e.g. VT 3300/110 V, CT 250/5 A) [1] CONFIGURATION 1: 3-phase / 3-wire 2: Single-phase / 2-wire 3: Single-phase / 3-wire [2] INPUT (unbalanced load) 1: 110 V / 5 A AC 2: 110 V / 1 A AC 3: 220 V / 1 A AC 4: 220 V / 5 A AC A: 100 V / 200 V / 1 A AC (single-phase / 3- wire) B: 100 V / 200 V / 5 A AC (single-phase / 3- wire) OUTPUT 1 Voltage 6: 1 – 5 V DC (Load resistance 5000 Ω min.) OUTPUT 2 Voltage 6: 1 – 5 V DC (Load resistance 5000 Ω min.) POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) GENERAL SPECIFICATIONS Construction: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided Connection Input: M3.5 screw terminals (torque 0.8 N·m) Output 1: Connector Output 2: Connector Power input: Supplied from connector Screw terminal: Nickel-plated steel Isolation: Voltage input to current input to output 1 to output 2 to power Overrange output: Approx. -10 to +120 % at 1 – 5 V Zero adjustment: -5 to +5 % (front) Span adjustment: 95 to 105 % (front)

MODEL: 18WT 18WT SPECIFICATIONS ES-1866 Rev.7 Page 2/4 http://www.m-system.co.jp/ INPUT SPECIFICATIONS Frequency: 50 or 60 Hz

  • Current Input Operational range: 0 – 120 % of rating Overload capacity: 1000 % of rating for 3 sec., 200 % for 10 sec., 120 % continuous
  • Voltage Input Operational range: 0 – 120 % of rating Overload capacity: 150 % of rating for 10 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 INPUT AVAILABLE BURDEN (VA) STD.RANGE RANGE VOLT. CURR. 110V/1A ±100W 110V/5A ±500W 220V/1A ±200W 220V/5A ±1000W INPUT AVAILABLE BURDEN (VA) STD.RANGE RANGE VOLT. CURR. 200V/1A ±200W 0.2 200V/5A ±1000W /phase
  • 3-phase / 3-wire
  • Single-phase / 2-wire
  • Single-phase / 3-wire INPUT AVAILABLE BURDEN (VA) STD.RANGE RANGE VOLT. CURR. 110V/1A ±200W ±100 – ±240W ±500 – ±1200W ±200 – ±480W ±1000 – ±2400W ±50 – ±120W ±250 – ±600W ±100 – ±240W ±500 – ±1200W ±100 – ±240W ±500 – ±1200W 0.2 110V/5A ±1000W /phase 220V/1A ±400W 0.4 220V/5A ±2000W /phase 0.2 /phase 0.4 /phase 0.1/phase 0.5/phase 0.1/phase 0.5/phase 0.1/phase 0.5/phase 0.1/phase 0.5/phase 0.1/phase 0.5/phase OUTPUT SPECIFICATIONS 500 1000W 0 OUT 0 +1000W -1000W OUT ■ OPERATION DIAGRAM (exam ple) INSTALLATION Current consumption: Approx. 80 mA Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18BXx or 18KBXx Weight: 200 g (0.44 lb) PERFORMANCE in percentage of span Accuracy: ±0.5 % Temp. coefficient: ±0.05 %/°C (±0.03 %/°F) Response time: ≤ 1 sec. (0 – 90 %) Ripple: 0.5 %p-p max. (50/60 Hz) Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @ 1 minute (voltage input to current input to output 1 or output 2 or power)

500 V AC @ 1 minute (output 1 to output 2 to power)

2000 V AC @ 1 minute (input or output or power to ground)

MODEL: 18WT 18WT SPECIFICATIONS ES-1866 Rev.7 Page 3/4 http://www.m-system.co.jp/ CONNECTION DIAGRAM ll LOAD 1 2 3 SOURCE P2 V P1 U v uFUSE VT U u k l CT L K k l L K ■ 3-PHASE/3-WIRE ■ SINGLE-PHASE/3-WIRE LOAD

1 N 2

v uFUSE VT V v U u k CT L K k L K CONNECTOR CONNECTOR OUTPUT 1 OUTPUT 2 POWER ■ SINGLE-PHASE/2-WIRE LOAD 1 2 SOURCE P2 V P1 U v uFUSE VT k l CT L K CONNECTOR OUTPUT 1 OUTPUT 2 POWER OUTPUT 1 OUTPUT 2 POWER V v EXTERNAL DIMENSIONS unit: mm (inch) 110 (4.33 ) 93 (3.66) 24 (.94) 7 (.28) 78 (3.07)32 (1.26) 8–M3.5 SCREW 7 (.28) 2–M3 SCREW

MODEL: 18WT 18WT SPECIFICATIONS ES-1866 Rev.7 Page 4/4 http://www.m-system.co.jp/ TERMINAL ASSIGNMENTS 1 2 3 4 7 8 5 6 Specifications are subject to change without notice.