KEWT

• Centralized monitoring and control of power management system in a manufacturing facility or building • SCR – Silicon Controlled Rectifier

50

(1.97)

80

MODEL: KEWT

4: 220 V / 5 A AC

A: 100 V / 200 V / 1 A AC (single-phase / 3- wire) B: 100 V / 200 V / 5 A AC (single-phase / 3- wire)

[3] OUTPUT

Current

A: 4 – 20 mA DC (Load resistance 600 Ω max.) B: 2 – 10 mA DC (Load resistance 1200 Ω max.) C: 1 – 5 mA DC (Load resistance 2400 Ω max.) D: 0 – 20 mA DC (Load resistance 600 Ω max.) E: 0 – 16 mA DC (Load resistance 750 Ω max.) F: 0 – 10 mA DC (Load resistance 1200 Ω max.) G: 0 – 1 mA DC (Load resistance 12 kΩ max.) J: 0 – 5 mA DC (Load resistance 2400 Ω max.) GW: -1 – +1 mA DC (Load resistance 10 kΩ max.) Z: Specify current (See OUTPUT SPECIFICATIONS) Voltage

1: 0 – 10 mV DC (Load resistance 10 kΩ min.) 2: 0 – 100 mV DC (Load resistance 100 kΩ min.) 3: 0 – 1 V DC (Load resistance 1000 Ω min.) 4: 0 – 10 V DC (Load resistance 10 kΩ min.) 5: 0 – 5 V DC (Load resistance 5000 Ω min.) 6: 1 – 5 V DC (Load resistance 5000 Ω min.)

K -UNIT

(3.15)

1W: -10 – +10 mV DC (Load resistance 10 kΩ min.) 2W: -100 – +100 mV DC (Load resistance 100 kΩ min.)

132

(5.20)

mm (inch)

MODEL: KEWT–[1][2][3]–[4][5]

ORDERING INFORMATION

• Code number: KEWT-[1][2][3]-[4][5]

Specify a code from below for each of [1] through [5].

(e.g. KEWT-11A-C/Q)

• Calibration range (e.g. -750 – +750 W)

• VT ratio, CT ratio (e.g. VT 3300 / 110 V, CT 250 / 5 A) • Special output range (For codes Z & 0) • Specify the specification for option code /Q

(e.g. /C01/S01)

[1] CONFIGURATION

1: 3-phase / 3-wire

2: Single-phase / 2-wire 3: Single-phase / 3-wire

[2] INPUT (unbalanced load)

1: 110 V / 5 A AC 2: 110 V / 1 A AC 3: 220 V / 1 A AC

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)

[4] AUXILIARY POWER SUPPLY

AC Power B: 100 V AC C: 110 V AC D: 115 V AC F: 120 V AC G: 200 V AC H: 220 V AC J: 240 V AC DC Power R: 24 V DC V: 48 V DC P: 110 V DC

[5] OPTIONS (multiple selections)

Custom specification

(Refer to the custom specification list for difference of specification and combination of code numbers.) blank: none

/X1: Input range Other Options



MODEL: KEWT

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

■ INPUT RANGE

• 3-phase / 3-wire

INPUT

STD.RANGE

110V/1A ±200 W 110V/5A ±1000 W 220V/1A ±400 W 220V/5A ±2000 W

• Single-phase / 2-wire

INPUT

STD.RANGE

AVAILABLE

RANGE

±100 – ±240 W ±500 – ±1200 W ±200 – ±480 W ±1000 – ±2400 W

AVAILABLE

RANGE

BURDEN (VA) VOLT. CURR.

0.2 0.1/ph

/phase 0.5/ph

0.4 0.1/ph /phase 0.5/ph

BURDEN (VA) VOLT. CURR.

GENERAL SPECIFICATIONS

Construction: Plug-in

110V/1A ±100 W 110V/5A ±500 W 220V/1A ±200 W 220V/5A ±1000 W

±50 – ±120 W ±250 – ±600 W ±100 – ±240 W ±500 – ±1200 W

0.2

0.4

0.1 0.5 0.1 0.5

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

• Single-phase / 3-wire

INPUT

STD.RANGE

200V/1A ±200 W 200V/5A ±1000 W

AVAILABLE

RANGE

±100 – ±240 W ±500 – ±1200 W

BURDEN (VA) VOLT. CURR.

0.2 0.1/ph

/phase 0.5/ph

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 %

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 ■ OPERATION DIAGRAM (example)

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

(750 × 10 3 [W]) ÷ ((3300 ÷ 110) × (250 ÷ 5)) = 0 – 500 [W]

OUT 20 mA

12

4

0

OUT 20 mA

12

4

-1000 W

500     1000 W

0      +1000 W

OUT 10 V

5

0

OUT +10 V

0

-10 V

-1000 W

500     1000 W

0      +1000 W

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.,



MODEL: KEWT

approx. 2 W (18 mA at 110 V)

Operating temperature: -10 to +55°C (14 to 131°F) Operating humidity: 30 to 85 %RH (non-condensing) Mounting: Surface or DIN rail Weight: 450 g (0.99 lb)

PERFORMANCE in percentage of span

Accuracy: ±0.5 % (at 23°C ±10°C or 73.4°F ±18°F, 45 – 65 Hz)

Response time: ≤ 2 sec. (0 – 100 % ±1 %)

Ripple: 0.5 %p-p max.(The output ripple may increase when there is great difference between the frequencies of input signal and power supply)

Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @ 1 minute

(voltage input to current input to output to auxiliary power to ground)

Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV (input to output or ground)