MODEL: MEWT

MEWT SPECIFICATIONS

ES-1921 Rev.7 Page 2/5

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

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

TERMINAL SCREW MATERIAL

/S01: Stainless steel

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3.5 screw terminals

Screw terminal: Chromated steel (standard) or stainless

steel

Housing material: Flame-resistant resin (black)

Isolation: Voltage input to current input to output to 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

• Current Input

Operational range: 0 – 120 % of rating

Overload capacity: 1000 % of rating for 3 sec., 200 % for 10

sec., 120 % continuous

• Voltage Input

Operational range: 0 – 120 % of rating

Overload capacity: 150 % of rating for 10 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

• 3-phase / 3-wire

VOLTAGE INPUT CURRENT INPUT

STD

RANGE

AVAILABLE

RANGE

BURDEN

BURDEN

110V 0.2VA×2

1A

0.1VA×2

±200W ±100W – ±240W

5A

0.5VA×2 ±1000W ±500W – ±1200W

220V 0.4VA×2

1A

0.1VA×2

±400W ±200W – ±480W

5A

0.5VA×2 ±2000W ±1000W – ±2400W

• Single-phase / 2-wire

VOLTAGE INPUT CURRENT INPUT

STD

RANGE

AVAILABLE

RANGE

BURDEN

BURDEN

110V

0.2VA

1A

0.1VA

±100W

±50W – ±120W

5A

0.5VA

±500W

±250W – ±600W

220V

0.4VA

1A

0.1VA

±200W

±100W – ±240W

5A

0.5VA

±1000W

±500W – ±1200W

• Single-phase / 3-wire

VOLTAGE INPUT CURRENT INPUT

STD

RANGE

AVAILABLE

RANGE

BURDEN

BURDEN

100/

200V *1

0.2VA×2

1A

0.1VA×2

±200W

±100W – ±240W

5A

0.5VA×2 ±1000W

±500W – ±1200W

100/200V: 100V = phase voltage

200V = line voltage except the grounding.

OUTPUT SPECIFICATIONS

■ DC Current: 0 – 20 mA DC and ± 1 mA

Minimum span: 1 mA

Offset: Max. 1.5 times span

Load resistance: Output drive 12 V maximum; 10 V for [±]

output

■ 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

500

1000 W

0

12

OUT

20 mA

500

1000 W

0

5

OUT

10 V

4

0

+1000 W

-1000 W

12

OUT

20 mA

0

+1000 W

-1000 W

0

OUT

+10 V

4

-10 V

s OPERATION DIAGRAM (example)