Current Relay for DC- and AC-currents STW1000
Current Relay adjustable, AC/DC 0,1 - 10 A, Limit 0 - 60 mV, with external shunt
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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
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