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Summary of Contents for Ampcontrol ELM V2
- Page 1 ELM V2 EARTH LEAKAGE PROTECTION RELAY User Manual Revision: 6, JULY 2023 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 30...
- Page 3 Copyright Notice The Ampcontrol ELM V2 Earth Leakage 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
4 INSTALLATION ............................. 12 4.1 General Warnings .......................... 12 4.2 Mandatory Installation Practices ....................12 4.3 ELM V2 Relay Mechanical Installation Information ................ 13 4.4 Toroid Mechanical Installation Information ..................14 4.5 Electrical Installation Information ....................16 5 COMMISSIONING AND CALIBRATION ....................18 5.1 Earth Leakage Test ........................ - Page 5 Figure 3.5: ELCF Adaptor (Suit ELM / ELD / ELV) ................... 11 Figure 3.6: ELF Adaptor (Suit ELM / ELD / ELV Relay) ................11 Figure 4.1: ELM V2 Enclosure Dimensions – Panel Mounted (Top) and DIN Rail Mounted (Bottom) ..13 Figure 4.2: EL500S/25 Toroid (115438) Dimensions ................14 Figure 4.3: EL500/60 Toroid (115439) Dimensions ..................
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Page 6: Safety And Other Warnings
MAG-231 Revision 6 – JULY 2023 1 SAFETY AND OTHER WARNINGS For safety reasons, the ELM V2 Earth Leakage Relay must be installed, operated and serviced only by competent personnel. Please read and understand this instruction manual completely before installing, operating or servicing this equipment. -
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
The ELM V2 Earth Leakage Relay is housed in a stainless-steel case and can be either ‘DIN Rail’ or ‘Panel’ mounted through a 69 x 39 mm cut out. When panel mounted the front of the ELM V2 Earth Leakage Relay is designed to provide IP56 ingress protection. There is provision to prevent... -
Page 9: Figure 3.2: Core Balance And Series Neutral Installation Types
The relay is not suitable for personal protection, which requires trip levels of 20-30 mA, with instantaneous operation (refer to AS/NZS 3190). The ELM V2 Relay continually monitors the toroid and if the connection is lost the relay will trip and flash the ‘CT Fault’ LED. -
Page 10: Accessories
3.2 Accessories 3.2.1 DIN Rail Mounting Kit (Part Number 101399) The ELM V2 Relay is designed to be panel mounted, however a DIN rail mounting kit can be separately purchased. Figure 3.3: DIN Rail Mounting Kit (Suit ELM / ELD / ELV) 3.2.2 Lockable Cover (Part Number 164672) -
Page 11: Figure 3.5: Elcf Adaptor (Suit Elm / Eld / Elv)
3.2.5 BRAMCO ELF Adaptor (Part Number 175279) This adaptor kit allows users of the BRAMCO ELF and ELF2 Relays to transfer to Ampcontrol’s next generation of earth leakage relays. The ELF Adaptor seals the larger hole (90 x 90 mm) left by the ELF Relay and provides a mounting point for the ELM V2 Relay. -
Page 12: Installation
If modifications of any form are made to the ELM V2 Relay, the equipment may no longer be fit for use. If any modifications or damage to the ELM V2 Relay is evident, do not use the equipment and contact Ampcontrol for advice. -
Page 13: Elm V2 Relay Mechanical Installation Information
4.3 ELM V2 Relay Mechanical Installation Information The ELM V2 Relay is housed in a plastic and stainless steel enclosure and is rated as IP20. The ELM V2 Relay enclosure is designed to be either DIN rail or Panel mounted. The dimensions are shown in Figure 4.1 below. -
Page 14: Toroid Mechanical Installation Information
The toroids specified for the more advanced ELD V3 and ELV Relay products meet the performance required by the ELM V2 Relay and can be used as alternative toroid options. For further information on these toroids see appropriate relay documentation. -
Page 15: Figure 4.4: El500//85 & El500/112 Toroid Dimensions
4.4.1 EL500/85 (Part Number 115440) & EL500/112 (Part Number 115441) The EL500/85 and EL500/112 toroids have a 85 mm and 112 mm window respectively and is panel mounted. Figure 4.4: EL500//85 & EL500/112 Toroid Dimensions Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 15 of 30... -
Page 16: Electrical Installation Information
These terminals provide a normally open contact that can be wired into control or indication circuits. The output relay will be energised (closed) whilst the ELM V2 Relay is healthy and will de-energise when the ELM V2 Relay is in the tripped state. - Page 17 These terminals provide a changeover contact that can be wired into control or indication circuits. The output relay will be energised whilst the ELM V2 Relay is healthy and will de-energise when in the ELM V2 Relay is tripped state.
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Page 18: Commissioning And Calibration
FMEA covering the design of the electrical protection system. NC-2 4-20mA + The following test can provide guidance on checking the correct operation of the ELM V2 Relay during commissioning. This is not intended to provide an exhaustive commissioning checklist, but should be COM-2... -
Page 19: Product Operation
Figure 6.1: ELM V2 Fascia Operators The trip settings are configured using the rotary selectors on the fascia of the ELM V2 Relay. The trip level is configured using the left rotary selector (typically green) and the trip time is selected using the right rotary selector (typically red). -
Page 20: Resetting The Elm V2 Relay
Figure 6.2: ELM V2 Relay Fascia Operators The ELM V2 Relay can be reset using the pushbutton on the fascia of the relay, or by bridging the two RESET terminals on the relay using a normally open (NO) pushbutton or relay contact connected to the terminals labelled “Ext Reset”... -
Page 21: Fail Safe Operation
MAG-231 Revision 6 – JULY 2023 6.5 Fail Safe Operation The ELM V2 Relay can be operated in fail-safe and non-fail-safe mode of operation. Fail-Safe Mode: This mode is the default and preferred method, where the relay drops out on fault or loss of power. -
Page 22: Service, Maintenance & Disposal
A number of external system based checks should be completed on a regular basis. These ‘routine inspections’ must be carried out by suitably trained people with knowledge of the ELM V2 Relay and the systems into which it is fitted. Routine inspections may take the form of either visual-only checks, or visual and ‘hands-on’... -
Page 23: Equipment Maintenance
It is recommended that the electrical protection system incorporating the ELM V2 Relay be subject to regular functional tests at intervals determined by risk assessment or FMEA. These intervals typically coincide with periodic maintenance checks and will cover (but not limited to) tests such as: •... -
Page 24: Specifications
Trip Level mA (Accuracy +/- 10 %) Time Delay ms (Accuracy +0 ms, -20 ms) 1000 1250 1000 1500 1500 1750 2000 2000 2500 2500 3000 Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version Page 24 of 30... -
Page 25: Equipment List
One toroid is required per installation. Order based upon required window size. The toroids specified for the more advanced ELD V3 and ELV Relay products meet the performance required by the ELM V2 and can be used as alternative toroid options. For further information on these toroids see appropriate relay documentation. -
Page 26: Appendix A: Earth Leakage Protection Requirements
AS/NZS 2081:2011. Earth leakage function (as performed by the Ampcontrol Elm V2 Relays) is one of six separate functions that comprise an AS/NZS 4871 distribution system protection scheme (EL, EC, EFLO, LOV/CF, NER, and NERM). A best practice protection scheme for an earth fault limited network is reliant on the interaction and operation of all six devices. -
Page 27: A2 Overview Of Protection Problems
The ELM V2 Relay is able to accommodate clearance times for fibrillation curve sets given in AS/NZS 3000, AS/NZS 4871.1:2012, AS/NZS 2067:2008, and AS/NZS 3007:2004 and the majority of international standards. -
Page 28: A3 Earth Leakage Systems
The protective device, such as an Ampcontrol ELM Earth Leakage Relay, would then isolate the cable and contain the sparking within the cable before a heavy short circuit current due to a phase-to-phase fault occurs. -
Page 29: A4 Methods Of Earth Leakage Protection
Select the smallest internal diameter toroid, which will allow the cables to fit through. Avoid very large toroids (200 mm) or toroids with square apertures. The ELM has been designed for use with the Ampcontrol EL500 series of toroids. For ordering part numbers, refer to the Equipment List in Section 10. - Page 30 CAUTION! The ELM V2 Relay includes a circuit for continually testing the toroid connection. The resistance of the wiring between the relay and toroid must be kept below 1Ω. If this is not done then a “CT” fault will be detected and the relay will trip.
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