ES-1948 Rev.0

L53UF

Power Transducer Series

HIGH-SPEED RESPONSE MULTI POWER TRANSDUCER

Functions & Features
• 30 msec. high-speed response
• By connecting just one circuit of the power system, AC current can be measured.
• Various parameters can be configured using the configurator.
Typical Applications
• Multi-functional power measurement in electric device or in switching boards.
 

MODEL: L53UF-1[1]0[2]-AD4[3]

ORDERING INFORMATION

• Code number: L53UF-1[1]0[2]-AD4[3]
Specify a code from below for each of [1] through [3].
  (e.g. L53UF-1202-AD4/Q)
• Specify the specification for option code /Q
  (e.g. /C01/SET)

CONFIGURATION

1: Single-phase / 2-wire and 3-wire, 
    3-phase / 3-wire and 4-wire

[1] INPUT

1: 480 V / 1 A AC
2: 480 V / 5 A AC

DISCRETE INPUT

0: None

[2] EXTERNAL INTERFACE

2: 4 – 20 mA DC × 4
3: 1 – 5 V DC × 4

AUXILIARY POWER SUPPLY

AD4: universal
100 – 240 V AC (Operational range 85 – 264 V, 47 – 66 Hz) /
110 – 240 V DC  (Operational range 99 – 264 V,
  ripple 10 %p-p max)

[3] OPTIONS

Other Options
blank: none
/Q: Option other than the above (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
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
 (No. ESU-1948)

RELATED PRODUCTS

• PC Configurator cable (model: COP-US)
• PC configurator software (model: PMCFG)
Downloadable at our web site.

GENERAL SPECIFICATIONS

Connection
Voltage input: Connector type terminal block
(applicable wire size: ≤ 2.5 dia, 0.5 – 3.5 mm2,
stripped length 7 - 8 mm)
Current input: Screw terminal block
(applicable wire size: ≤ 2.4 dia, 0.5 – 3.5 mm2,
stripped length 13 - 15 mm)
Analog output, auxiliary power supply:
Connector type terminal block
(applicable wire size: ≤ 2.4 dia, 0.5 – 2.5 mm2,
stripped length 7 - 8 mm)
Configuration: Single phase/2-wire and 3-wire, 3-phase/3-wire balanced/unbalanced load, 3-phase/4-wire balanced/unbalanced load
Housing material: Flame-resistant resin (gray)
Isolation: Voltage input to current input to configurator jack or analog output to auxiliary power
■ Measured variables
Voltage: 1 – N, 2 – N, 3 – N, 1 – 2, 2 – 3, 3 – 1
Current: 1, 2, 3, N
Active / reactive / apparent power: 1, 2, 3, Σ
Power factor: 1, 2, 3, Σ
Frequency

INPUT SPECIFICATIONS

Frequency: 50 / 60 Hz (45 – 65 Hz)
• Voltage Input
Rated voltage
Line-to-line (delta voltage): 480 V
Line-neutral (phase voltage): 277 V (single phase / 2-wire and 3-wire)
Consumption VA: ≤ ULN2 / 300 kΩ / phase
Overload capacity: 200 % of rating for 10 sec., 120 % continuous
Selectable primary voltage range: 50 – 400 000 V
• Current Input
Rated current: 1 A or 5 A
Consumption VA: ≤ I2 · 0.01 Ω / phase
Overload capacity: 4000 % of rating for 1 sec., 2000 % for
4 sec., 120 % continuous
Selectable primary current range: 1 – 20 000 A
Selectable primary power range: ≤ 2 G VA
Operational range
Voltage, current, apparent power: ≤ 120 % of the rating
Active / reactive power: -120 to +120 % of the rating
Frequency: 45 – 65 Hz
Power factor: -1 to +1

OUTPUT SPECIFICATIONS

■ DC Current: 4 – 20 mA DC
Load resistance: ≤ 270 Ω
■ DC Voltage: 1 – 5 V DC
Load resistance: ≥ 5000 Ω

INSTALLATION

Power consumption
•AC: < 10 VA
•DC: < 3 W
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: DIN rail
Weight: 320 g (0.71 lb)

PERFORMANCE

Accuracy (at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
Voltage: ±0.5 %*1
Current: ±0.5 %*1
Power: ±0.5 %*1
Power factor: ±0.5 %
Frequency: ±0.2 %*1
*1. Percentage of the spans:
            480 V for voltage;
            1 A or 5 A for current; and
            4155 W (5 A) or 831 W (1 A) for active power
The described accuracy levels are ensured at the input 1 % or more for phase 2 current with 3-phase/3-wire unbalanced load, for neutral current with 3-phase/4-wire unbalanced load, and neutral current with 1-phase/3-wire.
Data update period: 1/4 cycle of the measurement target
Response time to analog signal (input ≥ 50 Hz): 
• Other than frequency: ≤ 30 msec. (0 – 99 %)
• Frequency: ≤ 50 msec. (0 – 99 %)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength:
2000 V AC @ 1 minute
(voltage input or current input or analog output to auxiliary power)
2000 V AC @ 1 minute
(voltage input to current input to configurator jack or analog output)

STANDARDS & APPROVALS

EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
Low Voltage Directive 
  EN 61010-1
  Measurement Category III (input) 
  Measurement Category II  (output)
  Installation Category II (auxiliary power)
  Pollution Degree 2
 Input to auxiliary power: Reinforced insulation (550 V)
 Output to auxiliary power: Reinforced insulation (300 V)
 Input to output: Basic insulation (550 V)
RoHS Directive

EXTERNAL VIEW

TERMINAL CONNECTIONS

EXTERNAL DIMENSIONS unit: mm [inch]