STWA2AH Electronic current transformer, Measuring Transducer AC 0-20/100 A ... DC 4-20mA

AC Electronic current transformer with analog output, 2 measuring ranges, 2-wire execution

The STWA2 AH is a current-transducer for AC currents 0...20/100 A. With the STWA 2 AH the value of a current can be evaluated very economically and space-saving. The output-signal 4...20 mA can be evaluated or displayed with components with analog inputs, e.g. PLCs or ZIEHL digital displays type MINIPAN ^®.

Overview of Functions

• current-proportional analog output DC 4...20 mA according to AC-measuring range
• measuring range (20/100 A) can be changed with bridge
• insulated analog output
• supply DC 9-30 V (via 4-20 mA-loop)
• electrical connection via screwless pluggable terminals
• DIN-rail-mount or with screws
• plug-in current transformer (Ø 11 mm)

Technical Data

Supply voltage

^.......

DC 9...30 V (2-wire), alterable with bridge

Measuring range

^.......

AC 0...20 / 0...100 A

Analog output

^.......

DC 4...20 mA (max. 32 mA)

Load (max.)

^.......

9 V / 100 Ω, 24 V / 800 Ω, 30 V / 1100 Ω

Adjustment time

^.......

< 0,5 s.

Error of scale (above 10%/I_rated)

^.......

< 5%

Temperature coefficient

^.......

0...55°C: <0,06%/K (-20...0°C: <0,5%/K)

Nominal frequency

^.......

50/60 Hz

Operating range

^.......

30...400 Hz

Error

^.......

≤ 0,1%/Hz (30 - 50 Hz)
≤ 0,05%/Hz (60 - 400 Hz)

Overload cap. 20/100 A continously

^.......

63 A / 360 A

Rated ambient temperature range

^.......

-20...+55°C

Housing

^.......

Design H

Dimensions (h x w x d)

^.......

50 x 36 x 56 mm

Diameter for conductor

^.......

11 mm

Protection terminals

^.......

IP 20

Weight

^.......

approx. 90 g