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v1.0

Sensorform CFZ Earth Fault Indicator

User Manual

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Summary of Contents for Sensorform CFZ

Page 1: ...v1 0 Sensorform CFZ Earth Fault Indicator User Manual...

Page 2: ...Suparule Systems Ltd Page 2 of 24 CFZ DCF2038 v1 09 Sensorform EFI...

Page 3: ...nsor Selection 9 2 3 POWER CT 11 2 4 REMOTE RESET OPTIONAL 11 2 5 AUX RELAY OPTIONAL 11 2 6 MANUAL TEST RESET BUTTON 12 3 USER SELECTABLE TRIP OPTION S 13 4 OPERATION 14 4 1 EARTH FAULT DETECTION 14 4...

Page 4: ...enclosure should be handled as if carrying dangerous voltages WARNING Use extreme caution during the installation and use of the Sensorform EFI product as high voltages and currents may be present in...

Page 5: ...grounded surface or ideally by wearing a grounded antistatic wrist strap The use of an antistatic strap prior to removing the cover is highly recommended Education and training on ESD preventive measu...

Page 6: ...t imbalance due to an earth fault An earth fault trip is indicated by a Mechanical Flag Indicator fitted in the unit with an optional Remote Reset input and an optional Auxiliary Relay Contact for con...

Page 7: ...exposed for use in fixing the indicating unit to a surface Four two way screw terminals inside the unit provide a means of connecting the Power CT Remote Reset Aux Relay and CT Sensor to the unit The...

Page 8: ...request Units with S in the model number have user selectable trip levels from 3 or 4 factory set levels The EFI will reset automatically from a fault state on detecting the presence of the external p...

Page 9: ...ner cable tie of the CT sensor is used to secure the sensor firmly on the cable The flexible iron core of the sensor must be wrapped in a closed circle and pulled tight with the second outer cable tie...

Page 10: ...n to ensure that the sensor is mounted on the screened part of the cable The screen of all three conductors should be turned back underneath the core and terminated to earth as shown in Figure 2 1 Car...

Page 11: ...it is in fault model when this input is closed by means of an external momentary switch or relay contact for a miniumum period of 3 seconds the unit will reset A two way screw terminal connector is pr...

Page 12: ...fault state prior to the external power supply being restored The unit can only be manually tested if the unit has first been charged by the external Power CT for up to 40 minutes when the Power CT is...

Page 13: ...settings Trip 1 Trip 2 Trip 3 and Trip 4 which can represent for example 25A 50A 80 and 120A The actual trip levels to which each of these settings relates is shown on a label on the side of the unit...

Page 14: ...generate a voltage that is proportional to the measured current The on board circuitry analyses the voltage produced to determine that it is a valid earth fault signal as opposed to a transient spike...

Page 15: ...sition open and reset the Mechanical Flag indicator to the OFF Black state NOTE In the event of the internal backup power supply being fully discharged the minimum charge up time is needed before the...

Page 16: ...lt current less than 90 of the set trip current in a current carrying conductor running through the CT sensor For example for a trip level of 50A set the fault current to 45A This should not trip the...

Page 17: ...Connection Terminal Ratings Connector Typical Voltage Typical Current External Power Supply Input 8Vac 15mA Remote Reset Input No voltage to be applied 0 5mA Aux Relay 250VAC 220VDC Max Continuous Cur...

Page 18: ...H Ingress Protection IP65 Altitude 5000 meters Primary Indication Mechanical Flag Reset of Fault Automatic 10s after power return or Manual via Test Reset button or Remote Reset Input Auxiliary Relay...

Page 19: ...m holes Cable gland size M12 cable diameter range 3 6 5mm Weight 200g CT sensor CT100 Shipped as standard To fit 40 100mm diameter Multi core cables CT150 Ordered separately To fit 90 150mm diameter M...

Page 20: ...itted M D P Power cable 2 nd Char Cable length in metres 3 3 meters Sixth Group 1 st Char Reset cable fitted T Reset cable 2 nd Char Cable length in metres 3 3 meters Seventh Group Nominal trip curren...

Page 21: ...and components In no event shall The Company be liable for consequential damage Exclusions under the Warranty 1 Normal Wear and Tear Periodic maintenance repair and replacement of parts due to normal...

Page 22: ...anties of merchantability and fitness for a particular purpose with respect to the Sensorform EFI product and the accompanying product documentation Disclaimer To the maximum extent permitted by the l...

Page 23: ...Suparule Systems Ltd Page 23 of 24 CFZ DCF2038 v1 09 Sensorform EFI...

Page 24: ...24 CFZ DCF2038 v1 09 Sensorform EFI www suparule com Suparule Systems Limited Suparule House Holland Road National Technology Park Limerick Ireland Tel 353 0 61 201030 Fax 353 0 61 330812 Email info s...

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