Power Transducer Series LT-UNIT

AC CURRENT TRANSDUCER

(self-powered, RMS sensing)
Functions & Features
• Converts alternating current from a current transformer into a standard process signal
• Minimum ripple
• No auxiliary power source required
• Isolation up to 2000 V AC
• High-density mounting
• Conforms to IEC 60688
Typical Applications
• Centralized monitoring and control of motors, pumps or heaters by DCS
• Monitoring power line and power supply current
 

MODEL: LTCNE–[1][2][3]

ORDERING INFORMATION

• Code number: LTCNE–[1][2][3]
Specify a code from below for each of [1] through [3].
  (e.g. LTCNE-1G/T/Q)
• Specify the specification for option code /Q
  (e.g. /C01)

[1] INPUT

Current
1: 0 – 1 A  AC (used within 0.1 – 1 A)
2: 0 – 2A AC (used within 0.2 – 2 A)
5: 0 – 5 A  AC (used within 0.5 – 5 A)

[2] OUTPUT

Current
G: 0 – 1 mA DC (Load resistance 5000 Ω max.)
Voltage
3: 0 – 1 V DC (Load resistance 2000 Ω min.)
4: 0 – 10 V DC (Load resistance 20 kΩ min.)
5: 0 – 5 V DC (Load resistance 10 kΩ min.)

[3] 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 our 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: Input to output
Input waveform: Up to 15 % of 3rd harmonic content
Overrange output: 10 – 120 % at 0 – 5 V
Span adjustment: 95 to 105 % (front)

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz
Operational range: 10 – 120 % of rating
Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4
sec., 120 % continuous
Input burden: 2 VA

OUTPUT SPECIFICATIONS

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: 300 g (0.66 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
(input to output to ground)
Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV
(input to output or ground)

CONNECTION DIAGRAM

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]