MODEL: KUWTN

KUWTN SPECIFICATIONS

ES-3661 Rev.3 Page 3/6

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

0.150 sec. min. when the maximum frequency is less than

1 Hz, with the S5 rotary switch set to other than 0.

• Power Photo MOSFET Relay

Rating: 120 V AC/DC @ 100 mA (resistive load)

Max. ON resistance: 10 Ω

• Open Collector

Rating: 35 V DC @ 100 mA

ON voltage: ≤ 1 V at 100 mA

• Pulse Unit: refers to how much electrical energy (kWh)

consumption at the primary of the VT and CT corresponds to

the single output pulse per hour from the transducer.

• How to Set Pulse Unit: The switches S1 through S5, VT and

CT ratios, and the transducer's calibration input range all

determine the relative value of one pulse, i.e. the number of

kWh per pulse.

VT Ratio × CT Ratio × Calibration Range [kW] ÷ (2.777 Hz ×

3600 [sec.] × 10 × Pulse Unit [kWh/pulse])

a1 thr. a4: integer, 1 though 9

a5: integer, 0 through 6

[example] VT 3300 / 110 V, CT 250 / 5 A, Pulse Unit 10

[kWh/pulse], Clibration Range 1000 [W]

3300 ÷ 110 × 250 ÷ 5 × 1 [kW] ÷ (2.777 Hz × 3600 [sec.]

S1 = 1, S2 = 5, S3 = 0, S4 = 0, S5 = 2

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

Operating temperature: -10 to +55°C (14 to 131°F)

Operating humidity: 30 to 85 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 550 g (1.21 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.

Insulation resistance: ≥ 100 MΩ with 500 V DC

Dielectric strength: 2000 V AC @ 1 minute

(voltage input to current input to DC output to ground)

1000 V AC @ 1 minute

(pulse output to voltage input or current input or DC output

or ground)

Impulse withstand voltage: 1.2 / 50 μsec., ±5 kV

(input to output or ground)