STW1000, Current Relay, for DC- and AC-currents, 0,1...10 A

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

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% I_N
• 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

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

relay output

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2 change-over contacts

test conditions

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see general technical informations

function

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

frequency of measured current

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0 / 40 ... 400 Hz

internal resistance

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

overload capacity/continously

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

max. 10s

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

switching point

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adjustable10...100% I_N

hysteresis

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adjustable 5...50% of switching point

error of setting

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< 10%

repeat error

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± 0,2%

temperature-dependence

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≤0,05 %/K

start-up-delay d_Enable

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adjustable 1...20 sec.

switching delay d_AL

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adjustable 0,1...10 sec.

rated ambient temp. range

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-20°C…+55°C

dimensions (h x w x d)

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design V4: 90 x 70 x 58 [mm]

attachment

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

protection housing/terminals

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IP 30 / IP 20

weight

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approx. 180 g