MODEL: LTWTN

LTWTN SPECIFICATIONS

ES-3356 Rev.13 Page 2/5

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

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)

[5] PULSE OUTPUT (open collector)

0: None

1: 2.777 Hz at 100 % input

2: Specify pulse unit (within 0.006 – 3.12 Hz)

[6] 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 M-System's 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 DC output to

pulse output

Computation: Time division multiplication

Overrange output: Approx. -10 to +120 % at 1 – 5 V

Zero adjustment(DC output): -5 to + 5 % (front)

Span adjustment(DC output): 95 to + 105 % (front)

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz

■ VOLTAGE INPUT

Operational range: 85 – 110 % of rating

Overload capacity: 150 % of rating for 10 sec., 110 %

continuous

■ CURRENT INPUT

Operational range: 0 – 120 % of rating

Overload capacity: 4000 % of rating for 1 sec., 2000 % for 4

sec., 120 % continuous

■ How to determine Wattage Range

Calibration Range [W] = Measuring Wattage ÷ ((VT Ratio) ×

(CT Ratio))

Check that the required calibration range is within the

available range in the table. Specify this range when

ordering.

[Example]

3-phase / 3-wire, measuring wattage 750 kW,

VT 3300/110 V, CT 250/5 A

• Single-phase / 2-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

1 / 1

±100W

±50 – ±120W

0.1

1 / 2

±200W

±100 – ±240W

2.5

0.2

1 / 5

±500W

±250 – ±600W

0.5

2 / 1

±200W

±100 – ±240W

0.1

2 / 2

±400W

±200 – ±480W

2.5

0.2

2 / 5

±1000W

±500 – ±1200W

0.5

• Single-phase / 3-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

A / 1

±200W

±100 – ±240W

P

0.1/ph

A / 2

±400W

±200 – ±480W

P

0.2/ph

A / 5

±1000W

±500 – ±1200W

0.5/ph

• 3-phase / 3-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

1 / 1

±200W

±100 – ±240W

P

0.1/ph

1 / 2

±400W

±200 – ±480W

P

0.2/ph

1 / 5

±1000W

±500 – ±1200W

0.5/ph

2 / 1

±400W

±200 – ±480W

P

0.1/ph

2 / 2

±800W

±400 – ±960W

P

0.2/ph

2 / 5

±2000W

±1000 – ±2400W

0.5/ph

• 3-phase / 4-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

1 / 1

±200W

±100 – ±240W

P

0.1/ph

1 / 2

±400W

±200 – ±480W

: 2.5

0.2/ph

1 / 5

±1000W

±500 – ±1200W

P

0.5/ph

2 / 1

±400W

±200 – ±480W

P

0.1/ph

2 / 2

±800W

±400 – ±960W

: 2.5

0.2/ph

2 / 5

±2000W

±1000 – ±2400W

P

0.5/ph

4 / 1

±800W

±400 – ±880W

P

0.1/ph

4 / 2

±1600W

±800 – ±1760W

P

0.2/ph

4 / 5

±4000W

±2000 – ±4400W

P

0.5/ph

OUTPUT SPECIFICATIONS

■DC Output

• 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