Power Transducer Series LT-UNIT

POWER FACTOR TRANSDUCER

(for unbalanced load; self-powered)
Functions & Features
• Provides a DC output signal in proportion to power factor
• Usable with unbalanced load
• DC output containing little ripple is ideal for computer input
• 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
• Measuring power factor for a motor
 

MODEL: LTPFUN–[1][2][3][4][5][6][7]

ORDERING INFORMATION

• Code number: LTPFUN–[1][2][3][4][5][6][7]
Specify a code from below for each of [1] through [7].
  (e.g. LTPFUN-1151PA/T/Q)
• Special output range (For codes Z & 0)
• Specify the specification for option code /Q
  (e.g. /C01)

[1] CONFIGURATION

1: 3-phase / 3-wire
4: 3-phase / 4-wire

[2] VT INPUT (balanced load)

For 3-phase / 4-wire, phase voltages (e.g. 110 V / √3 ) are used.
1: 110 V AC
2: 220 V AC
4: 220 V / 380 V AC (3-phase/4-wire only)

[3] CT INPUT (unbalanced load)

Current
1: 1 A AC
2: 2 A AC
5: 5 A AC

[4] FREQUENCY

1: 50 Hz
2: 60 Hz

[5] OUTPUT SIGNAL POLARITY

P: Negative in lag, positive in lead
M: Negative in lead, positive in lag

[6] OUTPUT

Current
A: 4 – 20 mA DC (Load resistance 500 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
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)

[7] 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: Voltage input to current input to output
Computation: Phase angle detection
Overrange output: Approx. -10 to +120 % at 1 – 5 V
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)

INPUT SPECIFICATIONS

A device which employs different measuring
methods may show different outputs from that of ours with distorted input waveforms.
Frequency: 50 or 60 Hz
■ VOLTAGE INPUT
Operational range: 85 – 110 % of rating
Overload capacity: 150 % of rating for 10 sec., 110 % continuous
Input burden: 2.5 VA
■ CURRENT INPUT
Operational range: 10 – 120 % of rating
Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4 sec., 120 % continuous
Input burden: 0.1 VA (input 1 A)
0.2 VA (input 2 A)
0.5 VA (input 5 A)
■ Input range:
Lag 0.5 – 1 – lead 0.5
Lead 0.5 – 1 – lag 0.5

OUTPUT SPECIFICATIONS

■ 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
Offset: Max. 1.5 times span
Load resistance: Output drive 1 mA max. at ≥ 0.5 V

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: ±2 % with input 1 – 0.866, balanced load
±4 % with input 0.866 – 0.5, balanced load (at 23°C ±10°C or 73.4°F ±18°F, at rated frequency ±10 % [±5 % for 3-phase/4-wire])
Magnetic field (ext. origin) effect: ±2 % (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 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

CONNECTION DIAGRAM

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]