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Summary of Contents for Ampcontrol EFL
- Page 1 EARTH FAULT LOCKOUT PROTECTION RELAY User Manual Version: 5, March 2020 Designed and manufactured in Australia by Ampcontrol Pty Ltd...
- Page 2 The note symbol highlights key information. Please share these notes with other operators. ENVIRO The enviro (environmental) symbol highlights areas which may have an impact on the surrounding fauna and/or flora. Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 2 of 23...
- Page 3 MAG-178 Version 5 – MARCH/2020 Copyright Notice The Ampcontrol EFL Relay described in this document is the property of AMPCONTROL PTY LTD. It is furnished under a license agreement and is to be used only in accordance with the terms of the agreement.
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Page 4: Table Of Contents
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 ........17 6.3 Frozen Contactor (FC) Protection Function ..........18 6.4 Undervoltage (UV) Protection Function ............ - Page 5 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 ..............
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Page 6: Safety And Other Warnings
MAG-178 Version 5 – MARCH/2020 1 SAFETY AND OTHER WARNINGS For safety reasons, the EFL Relay must be installed, operated and serviced only by competent electrical personnel. Read and understand this instruction manual completely before installing, operating or servicing this equipment. Failure to install or operate this instrument in accordance with the instructions contained in this manual may create hazardous operating conditions. -
Page 7: Receiving And Storage
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. -
Page 8: Product Overview
EFL will initiate an EFLO trip, preventing the outlet from being started. The EFL will also monitor the state of the outlet’s main contactor. If voltage appears on the line when the contactor is open, a Frozen Contactor electrical trip will occur, opening the CBR output. If the main contactor is either open when it should be closed or closed when it should be open a Frozen Contactor logical trip will occur, opening the CBR relay. -
Page 9: Installation
If modifications of any form are made to the EFL Relay, the equipment may no longer be fit for use. If any modifications or damage to the EFL Relay is evident, do not use the equipment and contact Ampcontrol for advice. -
Page 10: Mandatory Installation Practices
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 non- compliant. -
Page 11: Figure 4.2: Enclosure Dimensions - External Barrier
EFL PROTECTION RELAY USER MANUAL MAG-178 Version 5 – MARCH/2020 Figure 4.2: Enclosure Dimensions – External Barrier Figure 4.3: Enclosure Dimensions – EFL Relay with Internal Barrier Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 11 of 23... -
Page 12: Figure 4.4: Terminal Numbering Arrangements For Efl Relay With External Barrier
9,10,11,12 1,2,3,4 5,6,7,8 1,2,3,4 17,18,19,20 21,22,23,24 5,6,7,8 25,26,27,28 29,30,31,32 Stand Alone EFL Barrier Figure 4.4: Terminal Numbering Arrangements for EFL Relay with External Barrier 13,14,15,16 Ua, Ub, Uc 9,10,11,12 Flying Leads 1,2,3,4 5,6,7,8 17,18,19,20 21,22,23,24 25,26,27,28 EFL with Internal Barrier Figure 4.5: Terminal Numbering Arrangement for EFL Relay with Internal Barrier. -
Page 13: Electrical Installation Information
Figure 4.6: Typical Electrical Application 4.4.1 Power Supply (Terminals 1 & 2) The EFL relay is supplied by either 24Vdc ± 20% or 24Vac ± 20%. The power consumption of the relay is less than 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. - Page 14 “stand-alone” units. The connection to the phase conductors is made using the three flying leads (A, B & C phase) that extend from the EFL Relay/Barrier. These leads are each 1.2m long. If the EFL Relay is purchased with the external barrier configuration, the EFL Relay and the external barrier will need to be wired together as per Figure 4.6.
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Page 15: Commissioning And Calibration
1. Open the main contactor that the EFL Relay is protecting. 2. Using a double poled switch, close the RUN and MCI inputs to the EFL Relay at the same time. This will indicate to the EFL Relay that the main contactor is closed and is required to be. As the main contactor remains open, the relay should see no voltage on the load side of the contactor. -
Page 16: Product Operation
6.1 Logical Operation of the EFL Relay The following flow chart provides an insight into the logical operation of the EFL Relay. Individual test functions are presented as sub-processes and the functionality of these tests can be seen in the individual test flow charts. -
Page 17: Earth Fault Lockout (Eflo) Protection Function
MCR output relay – provided that there are no latched FC, EFLO or UV trips. If an EFLO trip occurs, this trip will be latched in the memory of the EFL Relay. In order to clear an EFLO trip, the External Reset terminals must be shorted together. -
Page 18: Frozen Contactor (Fc) Protection Function
MC is either welded shut (Failed to Open) or frozen open (Failed to Close). The position of the MC is monitored by the 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. -
Page 19: Undervoltage (Uv) Protection Function
EFL Relay. If a UV trip occurs, this trip will be latched in the memory of the EFL Relay. In order to clear a UV trip, the External Reset terminals must be shorted together. This is typically achieved through the use of an externally wired normally open push button. -
Page 20: First Time Use / Use After Extended Storage
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. -
Page 21: Service, Maintenance & Disposal
This type of inspection may involve opening cabinets to gain access to the EFL Relay and other equipment. This level of inspection may also include cleaning display windows that have become obscured by dirt. -
Page 22: Equipment Service
MAG-178 Version 5 – MARCH/2020 7.3 Equipment Service To ensure the continuing 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. -
Page 23: Specifications
EFLO Status EFLO Trip EFLO Healthy EFLO Test Underway Find Out More For more information on this product, contact Ampcontrol Customer Service on +61 1300 267 373 or customerservice@ampcontrolgroup.com or visit the Ampcontrol website: ampcontrolgroup.com 9 EQUIPMENT LIST Part Number...
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