MODEL: KEWT

KEWT SPECIFICATIONS

ES-3666 Rev.6 Page 2/6

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

blank: none

/Q: Option other than the above (specify the specification)

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

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: 150 % of rating for 10 sec., 120 %

continuous

• Current Input

Operational range: 0 – 120 % of rating

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

[example]

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

VT 3300 / 110 V, CT 250 / 5 A

I INPUT RANGE

•

3-phase / 3-wire

•

Single-phase / 3-wire

•

Single-phase / 2-wire

INPUT

INPUT

INPUT

BURDEN (VA)

BURDEN (VA)

BURDEN (VA)

STD.RANGE

STD.RANGE

STD.RANGE

AVAILABLE

RANGE

AVAILABLE

RANGE

AVAILABLE

RANGE

VOLT.

VOLT.

VOLT.

CURR.

CURR.

CURR.

110V/1A

110V/5A

220V/1A

220V/5A

110V/1A

110V/5A

220V/1A

220V/5A

200V/1A

200V/5A

±200 W

±1000 W

±400 W

±2000 W

±100 W

±500 W

±200 W

±1000 W

±200 W

±1000 W

0.2

/phase

0.4

/phase

0.2

/phase

0.2

0.4

0.1

0.5

0.1

0.5

0.1/ph

0.5/ph

0.1/ph

0.5/ph

0.1/ph

0.5/ph

±100 –

±240 W

±500 – ±1200 W

±200 –

±480 W

±1000 – ±2400 W

±50 – ±120 W

±250 – ±600 W

±100 – ±240 W

±500 – ±1200 W

±100 – ±240 W

±500 – ±1200 W

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 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

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)

INSTALLATION

Auxiliary power supply

•AC: Operational voltage range: rating -15/+10 %,

50/60 Hz, approx. 2 VA

•DC: Operational voltage range: rating ±10 %,

or 85 – 150 V for 110 V rating, ripple 10 %p-p max.,