ES-1993 Rev.7
LCY
Power Transducer Series L-UNIT
BIDIRECTIONAL CURRENT TRANSDUCER
Functions & Features
• Accepting 3-phase/3-wire AC current and voltage and detecting the magnitude and direction of the power flow by the phase angle of the signals
• Providing standard DC signal in proportion to the AC current
• DC output containing little ripple is ideal for computer input
• Isolation up to 2000V AC
• High-density mounting
Typical Applications
• Measuring AC current flow in a factory having private power plants
MODEL: LCY–1[1][2]–[3][4]
ORDERING INFORMATION
• Code number: LCY–1[1][2]-[3][4]
Specify a code from below for each of [1] through [4].
(e.g. LCY-11A-C/Q)
• Special output range (For codes Z & 0)
• Specify the specification for option code /Q
(e.g. /C01/S01)
CONFIGURATION
1
: 3-phase / 3-wire
[1] INPUT (balanced load)
Current
1
: 110 V AC / -5 - +5 A
2
: 110 V AC / -1 - +1 A
3
: 220 V AC / -1 - +1 A
4
: 220 V AC / -5 - +5 A
The negative polarity of input current indicates the direct (surplus) flow and the positive indicates the reverse flow.
[2] OUTPUT
Current
A
: 4 – 20 mA DC (Load resistance 550 Ω max.)
DW
: -20 – +20 mA DC (Load resistance 550 Ω max.)
FW
: -10 – +10 mA DC (Load resistance 1100 Ω max.)
GW
: -1 – +1 mA DC (Load resistance 11 kΩ max.)
JW
: -5 – +5 mA DC (Load resistance 2200 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)
[3] AUXILIARY POWER SUPPLY
AC Power
B
: 100 V AC
C
: 110 V AC
D
: 115 V AC
F
: 120 V AC
G
: 200 V AC
H
: 220 V AC
J
: 240 V AC
DC Power
R
: 24 V DC
V
: 48 V DC
P
: 110 V DC
[4] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
TERMINAL SCREW MATERIAL
/S01
: Stainless steel
GENERAL SPECIFICATIONS
Construction
: Stand-alone; terminal access at the front
Connection
: M3.5 screw terminals (torque 0.8 N·m)
Screw terminal
: Nickel-plated steel (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Isolation
: Voltage input to current input to output to auxiliary power
Input waveform
: Up to 5 % of 3rd harmonic content
Overrange output
: Approx. -10 to +120 % at 1 – 5 V
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
INPUT SPECIFICATIONS
■
INPUT
Frequency
: 50 or 60 Hz
Detectable phase angle
Reverse flow
: lead 85° – 0° – lag 85°
Direct flow
: lag 95° – 180° – lag 265°
•
Voltage Input
Input burden
: 0.5 VA
Operational range
: 50 – 120 % of rating
Overload capacity
: 150 % of rating for 10 sec.,
120 % continuous
•
Current Input
Input burden
: 0.1 VA (input -1 – +1 A)
0.5 VA (input -5 – +5 A)
Operational range
: 10 – 120 % of rating
Overload capacity
: 1000 % of rating for 3 sec., 200 % for 10 sec., 120 % continuous
OUTPUT SPECIFICATIONS
■
DC Current
: -20 – +20 mA DC
Minimum span
: 1 mA
Offset
: max. 1.5 times span
Load resistance
: output drive 11 V maximum
■
DC Voltage
: -10 – +10 V DC
Minimum span
: 5 mV
Offset
: Max. 1.5 times span
Load resistance
: Output drive 1 mA max.; at ≥ 0.5 V
INSTALLATION
Auxiliary power supply
•
AC
: Operational voltage range: rating -15/+10 %,
50/60 Hz, approx. 2 VA
•
DC
: Operational voltage range: rating ±10 %,
or 85 – 150 V for 110 V rating, ripple 10 %p-p max.,
approx. 2 W (18 mA at 110 V)
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 % with balanced load
(at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
Response time
: ≤ 2 sec. (0 – 100 % ±1 %)
Ripple
: 0.5 %p-p max.
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 to auxiliary power 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]
MOUNTING REQUIREMENTS unit: mm [inch]