Ampcontrol EFL, User Manual

Page 1: ...Version 5 March 2020 Designed and manufactured in Australia by Ampcontrol Pty Ltd EFL EARTH FAULT LOCKOUT PROTECTION RELAY User Manual ...

Page 2: ... PART WARNING The warning symbol highlights a potential risk of injury or death Please share these warnings with other operators CAUTION The caution symbol highlights a potential risk of damage to equipment Please share these cautions with other operators NOTE The note symbol highlights key information Please share these notes with other operators ENVIRO The enviro environmental symbol highlights ...

Page 3: ...ument or from misuse of the information obtained herein The information in this document has been carefully checked and is believed to be entirely reliable with all of the necessary information included AMPCONTROL PTY LTD reserves the right to make changes to any products described herein to improve reliability function or design and reserves the right to revise this document and make changes from...

Page 4: ...INSTALLATION 9 4 1 General Warnings 9 4 2 Mandatory Installation Practices 10 4 3 Mechanical Installation Information 10 4 4 Electrical Installation Information 13 5 COMMISSIONING AND CALIBRATION 15 5 1 Earth Fault Lockout Test 15 5 2 Frozen Contactor Test 15 5 3 Undervoltage Test 15 6 PRODUCT OPERATION 16 6 1 Logical Operation of the EFL Relay 16 6 2 Earth Fault Lockout EFLO Protection Function 1...

Page 5: ...e EFL Relay 10 Figure 4 2 Enclosure Dimensions External Barrier 11 Figure 4 3 Enclosure Dimensions EFL Relay with Internal Barrier 11 Figure 4 4 Terminal Numbering Arrangements for EFL Relay with External Barrier 12 Figure 4 5 Terminal Numbering Arrangement for EFL Relay with Internal Barrier 12 Figure 4 6 Typical Electrical Application 13 Figure 6 1 Logical Operation of the EFL Relay General Over...

Page 6: ...ment Changes in the design and modifications to the equipment are not permitted Unauthorised changes made to the hardware or operating firmware will void the manufacturer s warranty and may compromise the integrity of the system into which it is installed and other connected equipment 1 1 2 Equipment Knowledge Experience with or understanding of this equipment is essential for the safe installatio...

Page 7: ...oval documentation for your safety file as applicable prior to wrappings being discarded 2 2 Inspection Equipment that is found to be damaged or has been modified away from its published specification must not be used Please contact Ampcontrol if the equipment is suspected to be different than that ordered or if it does not match the published specifications 2 3 Storage after Delivery When the equ...

Page 8: ... open the main contactor if the voltage on the load side of the contactor falls below 50 of the selected system voltage The EFL is available in two configurations an internal barrier configuration and an external barrier configuration If using the internal barrier unit the high voltage connection leads will extend directly from the EFL Relay If using the external barrier version the high voltage c...

Page 9: ... representative 4 1 2 Ensure that the application into which the EFL Relay is being installed has been properly defined designed and approved Any system intended to mitigate the risk of injury needs to be properly designed and implemented Such a system must be the result of structured risk analysis with the outcomes used to define the system requirements These requirements in turn will guide the c...

Page 10: ...cation labels fixed to the EFL Relay must not be damaged removed or covered before during or after installation The installation is to be in accordance with the relevant installation Standards Codes of Practice Modifications must not be made to any part of the EFL Relay As supplied the unit is built to and complies with the relevant standards Modifications to its construction will render the unit ...

Page 11: ...ontrolled Copy Refer to Ampcontrol Website for Latest Version Page 11 of 23 APPROVED FOR EXTERNAL DISTRIBUTION PROPERTY OF AMPCONTROL PTY LTD NOT TO BE REPRODUCED IN PART Figure 4 2 Enclosure Dimensions External Barrier Figure 4 3 Enclosure Dimensions EFL Relay with Internal Barrier 110 23 114 68 114 118 ...

Page 12: ...CED IN PART 4 3 3 Terminal Layouts Figure 4 4 Terminal Numbering Arrangements for EFL Relay with External Barrier Figure 4 5 Terminal Numbering Arrangement for EFL Relay with Internal Barrier 1 2 3 4 13 14 15 16 9 10 11 12 25 26 27 28 17 18 19 20 21 22 23 24 29 30 31 32 Stand Alone EFL 5 6 7 8 Barrier 1 2 3 4 5 6 7 8 Ua Ub Uc Flying Leads 1 2 3 4 5 6 7 8 13 14 15 16 9 10 11 12 Ua Ub Uc Flying Lead...

Page 13: ...han 5W 4 4 2 Earth Fault Lockout EFLO Trip Indication Terminals 5 6 The EFLO Trip Indication Contact is a normally closed NC contact that is used to provide external indication that an EFLO trip has occurred The contact is energised when the system is healthy and will de energise close when an EFLO trip is active 4 4 3 Frozen Contactor FC Trip Indication Terminals 7 8 The FC Trip Indication Contac...

Page 14: ...lls the EFL what the main contactor is doing 4 4 8 Earth Connection Terminals 21 22 23 24 The EFL Relay is to be earthed to the main earth using at least one 1 5mm2 earth cable 4 4 9 Reset Terminals 25 26 The EFL Relay s Reset terminals allow a normally open pushbutton or contact to be wired to the EFL Relay to provide a reset function Provided that a fault condition is not still present shorting ...

Page 15: ...EFLO trip prevents the main contactor from being closed WARNING if the outlet is attempted to be started while these resistors are connected and the EFL Relay fails the full system voltage will be applied to the resistors NOTE If preforming an EFLO test with a load connected a single 0 9MΩ resistor can be connected between any phase and earth 5 2 Frozen Contactor Test In order to ensure that the E...

Page 16: ...ed State Keep MCR and or CBR Open Is the main contactor already closed Open CBR FC Logical Trip MC closed prior initial EFLO test Enter Tripped State Open MCR EFLO Trip Outlet failed EFLO test Enter Tripped State Has the Back emf timer expired Voltage exceeds permissible threshold Phase to earth impedance 1MΩ Is UV Protection Activated Measured Voltage 50 of Setting Yes No Yes No No MCI input matc...

Page 17: ...liance to the worst case scenario as defined in AS NZS 2081 2011 section 7 2 Earth fault lockout protection devices shall be designed to prevent energization of the circuit interrupting device when the insulation resistance of any active conductor to earth is below 1 MΩ This requirement shall apply to any combination of active conductors to earth To ensure compliance with AS NZS 2081 2011 the EFL ...

Page 18: ...e EFL Relay by wiring an auxiliary contact of the MC to the MCI input The position of the MC interposing relay is monitored by the EFL Relay by wiring an auxiliary contact to the RUN input of the relay The FC Electrical Protection Function monitors the voltage on the load side of the main contactor via the HV barrier When the contactor is opened the EFL Relay will wait a period of time for the Bac...

Page 19: ...ally open push button NOTE To reset a UV trip the External Reset terminals of the EFL Relay must be shorted together using an externally wired pushbutton or relay A UV trip cannot be cleared whilst the EFL Relay is de energised 6 5 User Interface Figure 6 2 EFL Relay User Interface Functionality of Operators Rotate the Voltage Selector to select the system voltage of the outlet The Undervoltage Pr...

Page 20: ... been recharged Recharging the super capacitor requires the unit to be connected to an external power source for a period of 5min This charging can occur when the unit is installed in its service enclosure by energising the control supply to the relay or when the relay is not installed by connecting the EFL relay to 24Vac or 24Vdc supply ON FC Electrical Trip Active OFF FC Electrical Healthy ELEC ...

Page 21: ...s and obvious signs of damage Cable restraints are in good order and correctly fitted Check that no modifications have been carried out to installed equipment 7 1 2 Hands On Detailed Inspections A more detailed inspection would include all of the elements of a visual inspection plus some checks that cover the integrity of connections fixtures and fittings such as Verify that the EFL and Barrier if...

Page 22: ...ng safe operation of the EFL Relay Ampcontrol recommends that the EFL Relay and associated barriers be returned to an Ampcontrol registered repair facility for service and inspection every 5 years 7 4 Disposal ENVIRO The electronic equipment discussed in this manual must not be treated as general waste By ensuring that this product is disposed of correctly you will be helping to prevent potentiall...

Page 23: ...1 x NC 250V a c 6A 300VA AC1 60VA AC15 30V d c 1 2A DC1 Mechanical Environment Dimensions HxWxD 111 x 45 x 114mm EFL 111 x 22 x 114mm Barrier 111 x 75 x 114mm EFL with Internal Barrier Terminal Max Wire Gauge 2 5mm2 IP Rating IP20 Operating Temperature 20 C to 60 C Humidity Between 10 relative humidity and the dew point non condensing Air Flow The EFL is to be mounted in a position that allows unr...