MODEL: LTWT

LTWT SPECIFICATIONS

ES-3355 Rev.18 Page 2/9

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

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] AUXILIARY POWER SUPPLY

AC Power

K3: 100 – 120V AC

(Operational voltage range 85 - 132 V, 47 - 66 Hz)

L3: 200 – 240V AC

(Operational voltage range 170 - 264 V, 47 - 66 Hz)

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.)

P: 110 V DC

(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

(CE not available)

[7] OPTIONS (multiple selections)

Terminal Cover

blank: Without

/T: With

Custom specification

(Refer to the custom specification list for difference

of specification and combination of code numbers.)

blank: none

/X1: Input range

/X2: Input span

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 to auxiliary power

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: 0 – 120 % of rating

Overload capacity: 200 % of rating for 10 sec., 120 %

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