MODEL: LTRP

LTRP SPECIFICATIONS

ES-3357 Rev.16 Page 2/7

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

/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 output to

auxiliary power

Computation: Time division multiplication

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

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

Span adjustment: 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 Var Range

Calibration Range [var] = (Measuring Range) ÷

((VT Ratio) × (CT Ratio))

Check that the required calibration range is within the

available range in the table.

[example]

3-phase / 3-wire, measuring range 75 kvar,

VT 220 / 110 V, CT 250 / 5 A

• 3-phase / 3-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

1 / 1

200 var

100 – 240 var

0.2

0.1/ph

1 / 2

400 var

200 – 480 var

/phase

0.2/ph

1 / 5

1000 var

500 – 1200 var

0.5/ph

2 / 1

400 var

200 – 480 var

0.4

0.1/ph

2 / 2

800 var

400 – 960 var

/phase

0.2/ph

2 / 5

2000 var

1000 – 2400 var

0.5/ph

4 / 1

800 var

400 – 960 var

0.6

0.1/ph

4 / 2

1600 var

800 – 1920 var

/phase

0.2/ph

4 / 5

4000 var

2000 – 4800 var

0.5/ph

• 3-phase / 4-wire

INPUT

USABLE RANGE

BURDEN (VA)

VT / CT

STD.RANGE

VT

CT

CODE

1 / 1

200 var

100 – 240 var

0.1

0.1/ph

1 / 2

400 var

200 – 480 var

/phase

0.2/ph

1 / 5

1000 var

500 – 1200 var

0.5/ph

2 / 1

400 var

200 – 480 var

0.3

0.1/ph

2 / 2

800 var

400 – 960 var

/phase

0.2/ph

2 / 5

2000 var

1000 – 2400 var

0.5/ph

4 / 1

800 var

400 – 960 var

0.4

0.1/ph

4 / 2

1600 var

800 – 1920 var

/phase

0.2/ph

4 / 5

4000 var

2000 – 4800 var

0.5/ph

OUTPUT SPECIFICATIONS

■ 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

Offset: Max. 1.5 times span

Load resistance: Output drive 1 mA max. at ≥ 0.5 V

12

OUT

20mA

0

1000var

(Lead)

1000

(Lag)

0

OUT

+10V

4

12

OUT

20mA

0

OUT

+10V

4

-10V

-10V

0

1000var

(Lead)

1000

(Lag)

0

1000var

(Lead)

1000

(Lag)

0

1000var

(Lead)

1000

(Lag)

• Negative in lag, positive in lead

• Negative in lead, positive in lag

OPERATION DIAGRAM (example)