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Contactors and Relays
ZEV electronic motor-protective system |
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| Electronic motor protection system ZEV with short-circuit monitoring at the thermistor input |
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| Short-circuit in the thermistor circuit can, when required, be detected by the additional use of a current monitor K1 (e.
g. type EIL 230 V AC from the company Cronzet or the similar type 3U6352-1-1AL20 from the company Siemens). |
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Basic data
- Short-circuit current in the sensor circuit ≤ 2.5 mA
- Max. cable length to sensor 250 m (unscreened)
- Total PTC thermistor sensor resistance ≤ 1 500 Ω
- Programming ZEV: “Auto reset”
- Setting current monitor:
Device to lowest current level
Overload tripping
Store the tripping
- Confirmation of the short-circuit after clearing with pushbutton
S3.
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