Electronic Current-Transformer Type STWA1SEH

AC Electronic current transormer, adjustable limit AC 2-10 A, transistor-output, LED

Electronic Current-Transformer Type STWA1SEH

Part number

Product description

 

The STWA1SEH is used where current flow has to be detected, e.g. to report exceeding of a limit, to switch off a machine or just report the current flow. 

The STWA1SEH has an integrated electronics with transistor-output. The limit is adjustable 2 - 10 A with a potentiometer. A LED displays the state.

  • adjustable switching point 2-10 A
  • built-in LED displays state of the output
  • isolated transistor-output max. DC 40 V / 40 mA
  • output van be directly connected to a digital input of a PLC
  • integrated diode for reverse voltage protection
  • electrival connection via screwless pluggable terminals
  • 2-wire, no supply voltage required
  • DIN-rail-mount or with screws
  • plug-in current transformer (Ø 11 mm)
  • max. overload 100 A continuously, 300 A max. 10 s.

Technical Data

Output

.......

transistor

 

Switching voltage

.......

max. DC 40 V

 

Switching current

.......

max. DC 40 mA

 

Voltage drop ( ON )

.......

max. 1,5 V

 

Leak current ( OFF )

.......

max. 10 μA

 

Switching Point

Switch-on-point at Tu = 25°C

.......

2 ... 10 A ±25 % (adjustable, red LED on)

 

Hysteresis

.......

app. 5 ... 30 %

 

Repeat accuracy

.......

± 2 %

 

Temperature factor

.......

< 0.06 % / K

 

Switch-on delay

.......

0,2 ... 2 s

 

Switch-off delay

.......

≤ 0,3 s

 

Frequency

Functional range

.......

50 ... 60 Hz

 

Nominal frequency

.......

50 Hz

 

Error

.......

≤ 3 %/Hz

 

Overload Capacity

continuously

.......

100 A

 

max. 10 s

.......

300 A

 

Test Conditions (EN 61010)

Rated impulse withstand voltage

.......

4000 V

 

Overvoltage category

.......

III

 

Pollution degree

.......

2

 

Rated insulation voltage Ui

.......

250 V

 

On-period

.......

100 %

 

Rated ambient temperature range

.......

0 ... 55 °C

 

EMV-immunity

.......

EN 61326 (industrial electromagnetic environment)

 

EMC-emission

.......

EN 61326 CISPR 11 class B

 

Vibration resistance EN 60068-2-6

.......

2...25 Hz ±1,6 mm
25...150 Hz 5 g


Housing

Design

.......

H

 

Line connection

.......

each 1 x 0,08 mm2 to,5 mm2

 

protection terminals

.......

IP 20

 

Mounting position

.......

any

 

Weight

.......

app. 90 g