MODEL: LSMT4

LSMT4 SPECIFICATIONS

ES-1957 Rev.6 Page 2/5

https://www.m-system.co.jp/

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)

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

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)