Current Relay for DC- and AC-currents STW1000

Current Relay adjustable, AC/DC 0,1 - 10 A, Limit 0 - 60 mV, with external shunt

Current Relay for DC- and AC-currents STW1000

Order-number

AC/DC 24-240 V

Product description

 

ZIEHL current-relays STW1000 have 4 measuring-ranges. They monitor most of the common AC- and DC-currents for over- or undercurrent. Currents up to 10 A can be connected directly to the STW. For higher currents external transformers (to inputs 1/5 A) or Shunts (input 60 mV) can be connected.

  • Measuring inputs 1 A, 5 A, 10 A, direct or via transformer
  • Measuring input 60 mV for ext. Shunt
  • Automatic detection of AC/DC
  • Monitoring of over- or undercurrent
  • Adjustable range 10...100% IN
  • Hy s teres i s adjus tabl e 5...50%
  • Start-up delay 1...20s (input enable)
  • Switching delay 0,1...10s for fading of short peaks
  • Output-relay 2 changeovercontacts (co)
  • Operating- or closed-circuitmode for relays selectable with bridge

Technical Data

supply voltage Us

.......

AC/DC 24-240 V, <3W, <5VA
(AC 20-264 V, DC 20,4...297 V)

 

relay output

.......

2 change-over contacts

 

test conditions

.......

see general technical informations

 

function

.......

Over- or undercurrent, DC orAC (1-phase)

 

frequency of measured current

.......

0 / 40 ... 400 Hz

 

internal resistance

.......

60 mV: 40 kΩ, 1A: 0,1 Ω, 5A: 20 mΩ, 10 A: 10 mΩ

 

overload capacity/continously

.......

60 mV: 10 V, 1A: 2 A, 5A: 7,5 A, 10 A: 11 A

 

max. 10s

.......

60 mV: 10 V, 1A: 5 A, 5A: 15 A, 10 A: 20 A

 

switching point

.......

adjustable10...100% IN

 

hysteresis

.......

adjustable 5...50% of switching point

 

error of setting

.......

< 10%

 

repeat error

.......

± 0,2%

 

temperature-dependence

.......

≤0,05 %/K

 

start-up-delay dEnable

.......

adjustable 1...20 sec.

 

switching delay dAL

.......

adjustable 0,1...10 sec.

 

rated ambient temp. range

.......

-20°C…+55°C

 

dimensions (h x w x d)

.......

design V4: 90 x 70 x 58 [mm]

 

attachment

.......

on 35 mm DIN-rail according to EN 60 715 or with screws M4

 

protection housing/terminals

.......

IP 30 / IP 20

 

weight

.......

approx. 180 g