Electronic Current-Transducer Type STWA1FH

AC Electronic current transformer with freqency output

Electronic Current-Transducer Type STWA1FH

Part number


Product description

 

The STWA 1 FH is a current-transducer for AC current. With the STWA 1 FH the value of a current can be evaluated very economically and space-saving. The isolated (to signal and supply-voltage) frequency-output can be connected directly to a digital input of a PLC.

Overview of Functions

  • current-proportional analog frequency-output 0,5...20 Hz = 0...20 A
  • output max. DC 30 V / 30 mA, insulated with optocoupler
  • direct connection to PLC possible
  • supply-voltage DC 10...30 V
  • integrated diode for reverse voltage protection
  • electrical connection via screwless pluggable terminals
  • DIN-rail-mount or with screws
  • plug-in current transformer (Ø 11 mm)
  • option: other current- or frequency-ranges

Technical Data

Supply Voltage Us

.......

DC 10 ... 30 V typ. <15 mA, max. 22 mA

 

Ripple

.......

max. 5 %

 

Output OUT (Transistor)

Switching voltage

.......

max. DC 30 V

 

Switching current

.......

max. DC 30 mA

 

Frequency of monitored current

Functional range

.......

50 ... 400 Hz

 

Nominal frequency

.......

50 Hz

 

Error

.......

 0,2 % / Hz

 

Frequency

Monitoring range

.......

0 ... 20 A   .....  0,5 ... 20 Hz / maximum frequency at overcurrent < 40 Hz

 

Options

.......

0 ... 40 A   .....  0,5 ... 40 Hz / maximum frequency at overcurrent  < 80 Hz
0 ... 60 A   .....  0,5 ... 60 Hz / maximum frequency at overcurrent < 120 Hz
0 ... 80 A   .....  0,5 ... 60 Hz / maximum frequency at overcurrent  < 120 Hz
0 ... 50 A   .....  10 ... 1000 Hz / maximum frequency at overcurrent  < 2000 Hz

 

Adjustment time

.......

< 0,5 s

 

Error (from 10 % / Inom)

.......

2 % v. E.

 

Temperature coefficient

.......

< 0,06 % / K

 

Overload Capacity

continuously

.......

IN+5%

 

max. 10 s

.......

200 A

 

Test Conditions (EN 50178)

Rated impulse withstand voltage

.......

4000 V

 

Overvoltage category

.......

III

 

Contamination level

.......

2

 

Rated insulation voltage Ui

.......

250 V

 

On-period

.......

100 %

 

Rated ambient temperature range

.......

0 ... 55 °C

 

Interference resistance

.......

EN 61000-6-2

 

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 1,5 mm2

 

protection terminals

.......

IP 20

 

Mounting position

.......

any

 

Weight

.......

ca. 90 g