ES-1957 Rev.7

LSMT4

Power Transducer Series

MULTI POWER TRANSDUCER

Functions & Features
• Measures simultaneously several variables of a heavy-current power system: current, voltage, active, reactive and apparent power, active and reactive energy, power factor, frequency, etc.
• Parameters are programmable using the front buttons or the PC
• Displayed measurands are freely selectable
• Loop test output
• 10-point analog and 2-point energy pulse output
Typical Applications
• Multi-functional power measurement in electric device or in switching boards.
 

MODEL: LSMT4–[1][2][3]1–[4][5]

ORDERING INFORMATION

• Code number: LSMT4-[1][2][3]1-[4][5]
Specify a code from below for each of [1] through [5].
  (e.g. LSMT4-12A1-AD4/Q)
• Specify the specification for option code /Q
  (e.g. /C01)
• Non-specified orders will be shipped at default factory settings (No. ESU-1957). However, the power suffix code must be specified.
Measured variables can be reconfigured with front panel or PC configurator software.

[1] CONFIGURATION

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

[2] INPUT

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

[3] OUTPUT

Current
A: 4 – 20 mA DC
Voltage
4: 0 – 10 V DC
5: 0 – 5 V DC
6: 1 – 5 V DC

DISCRETE OUTPUT

1: Do 2-point

[4] AUXILIARY POWER SUPPLY

AD4: universal
100 – 240 V AC (Operational range 85 – 264 V, 50 / 60 Hz) /
110 – 240 V DC  (Operational range 99 – 264 V,
  ripple 10 %p-p max)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
V: 48 V DC
(Operational voltage range 48 V ± 10 % , ripple 10 % p-p max.)

[5] OPTIONS

blank: none
/Q: With options (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

RELATED PRODUCTS

• PC configurator software (model: LSCFG)
Downloadable at our web site.
A dedicated cable is required to connect the module to the PC.  Please refer to the internet software download site or the users manual for the PC configurator for applicable cable types.

GENERAL SPECIFICATIONS

Construction: Stand-alone; terminal access at the front
Degree of protection: IP 20 (Terminal block, housing)
Connection
 Voltage input: M4 screw terminals (torque 1.4 N·m)
 Current input: M4 screw terminals (torque 1.4 N·m)
 Output: M3.5 screw terminals (torque 0.6 N·m)
 Power: M4 screw terminals (torque 1.4 N·m)
Configuration
Code 1: Single phase/2-wire and 3-wire, 3-phase/3- wire balanced/unbalanced load
Code 2: Single phase/2-wire and 3-wire, 3-phase/3- wire balanced/unbalanced load, 3-phase/4- wire balanced/unbalanced load
Screw terminal: Nickel-plated steel
Housing material: Flame-resistant resin (black)
Isolation: Voltage input to current input to output signal to discrete output 1 to discrete output 2 to auxiliary power supply to FE
■ 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
Active energy
Reactive energy
■ DISPLAY:
Red LED; for setting and monitoring; signed 5 digits

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 Output
Load resistance (output range)
 4 - 20 mA DC: ≤ 600 Ω
 0 - 10 V DC: ≥ 5kΩ
 0 - 5 V DC: ≥ 1kΩ
 1 - 5 V DC: ≥ 1kΩ
■ Open Collector
Energy count output
Max. rated load: 130 V DC @ 50 mA
Continuous rated load: 130 V DC @ 30 mA
Saturation voltage: 1.5 V DC
When driving an inductive load, external contact protection and noise quenching recommended.

INSTALLATION

Auxiliary Power
•AC: < 20 VA
•DC: < 9 W
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 700 g (1.5 lb)

PERFORMANCE in percentage of rating

Accuracy
(at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)
Voltage: ±0.5 %
Percentage of 100 V at ≥ 1 V to < 100 V
Percentage of input voltage at ≥ 100 V
Current: ±0.5 %
Power: ±0.5 %
Percentage of the span of wattage as listed below
at < 100 V:
173.2 W (1 A) or 866 W (5 A) for 3 ph/3 w
100 W (1 A) or 500 W (5 A) for 1 ph/2 w
200 W (1 A) or 1000 W (5 A) for 1 ph/3 w
300 W (1 A) or 1500 W (5 A) for 3 ph/4 w
Percentage of the span of power based on input voltage and rated current (1 A or 5 A) at ≥ 100 V
PF: ±0.5 %
Frequency:  ±0.5 %
Energy:  ±1 % (Load current 5 - 120 % PF 1; load current 10 - 120 % PF 0.5)
Response time: ≤ 1 sec. (0 – 99 %)
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute
(Voltage input to current input to output signal to discrete output 1 to discrete output 2 to auxiliary power to FE)

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)
  Installation Category II (auxiliary power)
  Pollution Degree 2
 Input to output: Reinforced insulation (480 V)
 Output to auxiliary power: Reinforced insulation (300 V)
RoHS Directive

EXTERNAL VIEW

TERMINAL CONNECTIONS

Note: In order to improve EMC performance, bond the FE terminal to ground.
Caution: FE terminal is NOT a protective conductor terminal.

EXTERNAL DIMENSIONS unit: mm [inch]

MOUNTING REQUIREMENTS unit: mm [inch]