Current Relay for DC- and AC-currents STW1000
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
| Product group: | Mains Monitoring |
|---|---|
| Input/ Measured parameter: | Current measuring |
| Outputs: | Outputs/Relays |
| Supply voltage: | AC/DC 24-240 V |
| Design: | Mount in switchgear cabinet, Mount in circuit breaker box |
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Zubehör
Current Transformer Type STWA1
The STWA1 current transformer is made to match the STW current monitor. One current transformer is required for each line being monitored. The STWA1 consists of a climate-proven sealed-in coil with toroidal tape core. The connection cables are permanently fixed to the transformer and are 1 m in length. The level of the current to be monitored is limited to 100 A continously, 300 A for max. 10s.In case of current of more than approx. 5 A, an LED can be triggered directly via the STWA 1 current transformer. Thus it's easy for users to visually monitor the current conduction in a line. The LED is protected by an anti-parallel diode or by its connection in series. A protective resistor is necessary depending on the LED used or the level of current being monitored.Weight: approx. 43 g
Current-Sensor Type S1
Recording of welding currents (mounting at ground wire) for controlling dedusting plants in combination with ZIEHL-controls type STW. Recording the state of a consumer of electricity (on or off or defective).In general the current-sensor S1 is used where the current-flow is to be detected, with the exact value of the current either known from the power consumption of the connected consumer or does not matter for the evaluation.For evaluation of measuring data in more than 1 cable, these outputs of several current-sensors can be connected in parallel (OR-evaluation).switching point app. 5 A (option: adjustable 5-30 A)monitoring of AC and DC currentsLED for current flowmounting without disconnection of cable possible2 transistor-outputs, switching + and -, direct connection to a PLC possibleconnection to current-relays ZIEHL type STWrobust, sealed executionoverload capacity: unlimited