Ampcontrol ELM V2 User manual

Revision: 6, JULY 2023
Designed and manufactured in Australia by Ampcontrol Pty Ltd
ELM V2
EARTHLEAKAGEPROTECTIONRELAY
UserManual

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 2 of 30
APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN 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 areas which may have an
impact on the surrounding fauna and/or flora.

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN PART
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.
No part of the hardware or documentation may be reproduced, transmitted, transcribed, stored in a
retrieval system, or translated into any language or computer language, in any form or by any means,
without prior written permission of AMPCONTROL PTY LTD.
Disclaimer
While every effort has been made to assure the accuracy and clarity of this document, AMPCONTROL
PTY LTD assumes no liability resulting from any omissions in this document, 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 time to time in content
hereof with no obligation to notify any persons of revisions or changes. AMPCONTROL PTY LTD does
not assume any liability arising out of the application or any use of any product or circuit described
herein; neither does it convey license under its patent rights or the rights of others.
Before You Begin
Thank you for purchasing the Ampcontrol ELM V2 Relay.
WARNING!
In the interests of safety and correct equipment operation, please
take the time to read and understand the content in this manual.
Ampcontrol Contact Details
7 Billbrooke Close, Cameron Park, NSW, 2285
P [phone] | F [phone]
EMAIL: [email protected]
WEB: ampcontrolgroup.com

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 4 of 30
APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN PART
TABLE OF CONTENTS
1 SAFETY AND OTHER WARNINGS........................................................................................................6
1.1 Safe Use of Equipment....................................................................................................................6
2 RECEIVING AND STORAGE..................................................................................................................7
2.1 Receiving.........................................................................................................................................7
2.2 Inspection.........................................................................................................................................7
2.3 Storage after Delivery......................................................................................................................7
2.4 Unpacking of Equipment..................................................................................................................7
3 PRODUCT OVERVIEW ..........................................................................................................................8
3.1 ELM V2 Earth Leakage Relay..........................................................................................................8
3.2 Accessories....................................................................................................................................10
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........................................................................................................................18
6 PRODUCT OPERATION.......................................................................................................................19
6.1 Configuration of Trip Level and Trip Time......................................................................................19
6.2 Resetting the ELM V2 Relay..........................................................................................................20
6.3 ELM V2 Indicators..........................................................................................................................20
6.4 CT Fault Protection........................................................................................................................20
6.5 Fail Safe Operation........................................................................................................................21
7 SERVICE, MAINTENANCE & DISPOSAL ............................................................................................22
7.1 Equipment Service.........................................................................................................................22
7.2 Equipment Maintenance ................................................................................................................23
7.3 Disposal.........................................................................................................................................23
8 SPECIFICATIONS.................................................................................................................................24
9 SETTINGS QUICK REFERENCE GUIDE.............................................................................................24
10 EQUIPMENT LIST...............................................................................................................................25
10.1 Relay............................................................................................................................................25
10.2 Toroids.........................................................................................................................................25
10.3 Accessories..................................................................................................................................25
APPENDIX A: EARTH LEAKAGE PROTECTION REQUIREMENTS......................................................26
A1 Australian Standards for Earth Leakage (Mining Industry).............................................................26

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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A2 Overview of Protection Problems ...................................................................................................27
A3 Earth Leakage Systems .................................................................................................................28
A4 Methods of Earth Leakage Protection ............................................................................................29
A5 Earth Leakage Toroids ...................................................................................................................29
TABLE OF FIGURES
Figure 3.1: Ampcontrol ELM V2 Earth Leakage Relay...............................................................................8
Figure 3.2: Core Balance and Series Neutral Installation Types................................................................9
Figure 3.3: DIN Rail Mounting Kit (Suit ELM / ELD / ELV) .......................................................................10
Figure 3.4: Lockable Cover (Suit ELM / ELD / ELV Relay).......................................................................10
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..................................................................................14
Figure 4.4: EL500//85 & EL500/112 Toroid Dimensions ..........................................................................15
Figure 4.5: ELM V2 Relay Typical Connection Diagram ..........................................................................16
Figure 5.1: Earth Leakage Test Circuit.....................................................................................................18
Figure 6.1: ELM V2 Fascia Operators......................................................................................................19
Figure 6.2: ELM V2 Relay Fascia Operators............................................................................................20
Figure 6.3: Functionality of ELM V2 Relay Indicator LEDs.......................................................................20

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN PART
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. Failure to install or operate this instrument in accordance with the
instructions contained in this manual may create hazardous operating conditions.
1.1 Safe Use of Equipment
The equipment supplied has been designed and manufactured to ensure safe operation. The equipment
must only be used within the design parameters.
The instructions within this manual must be observed as an aid towards achieving the safest possible
installation.
Persons responsible for installation, maintenance, or operation, must observe the following
instructions:
1.1.1 Changes to Equipment
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 installation and removal of
the equipment. Therefore, please read and understand this manual prior to use. Competency based
training courses are recommended and are available on request.
1.1.3 Manual Handling
Precautions have been taken to ensure all equipment is safe to handle and free from sharp edges.
However care should always be taken when handling enclosures and gloves should be worn.
1.1.4 Installation
Correct operation and safety depend on the ELM V2 Relay and associated equipment being installed
correctly. Mechanical and or electrical installation and maintenance of plant and equipment must only
be carried out by appropriately qualified personnel and must be tested thoroughly prior to operation.
1.1.5 Operation
As safety depends on the relay functioning correctly it is highly recommended that all safety functions
of the relay be periodically tested to ensure correct operation.

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN PART
2 RECEIVING AND STORAGE
2.1 Receiving
All possible precautions are taken to protect the equipment against damage or losses during shipment,
however before accepting delivery, check all items against the packing list or bill of loading. If there is
evidence of physical damage, notify Ampcontrol immediately.
Notify Ampcontrol immediately in case of any discrepancies to the packing list. Keep a record of any
claims and correspondence. Photographs are recommended.
Where practicable do not remove protective covers prior to installation unless there are indications of
damage. Boxes opened for inspection and inventory should be carefully repacked to ensure protection of
the contents or else the parts should be packaged and stored in a safe place. Examine all packing
boxes, wrappings and covers for items attached to them, retain and store any approval documentation
for your safety file as applicable prior to wrapping 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 equipment is not to be installed immediately, proper storage is important to ensure protection
of equipment and validity of warranty.
All equipment should be stored indoors between 0-40 ˚C, preferably on shelves and protected from
moisture and sunlight.
2.4 Unpacking of Equipment
The method of packing used will depend on the size and quantity of the equipment. The following
cautions should be interpreted as appropriate.
CAUTION!
Take care when unpacking crates as the
contents may have shifted during transport.
ENVIRO
The disposal of packaging materials, replaced parts, or components
must comply with environmental restrictions without polluting the soil,
air or water.
Ensure that any timber and cardboard used as packaging is disposed
of in a safe and environmentally responsible manner.
Where possible, dispose of all waste products i.e. oils, metals, plastic
and rubber products by using an approved recycling service centre.

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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APPROVED FOR EXTERNAL DISTRIBUTION –PROPERTY OF AMPCONTROL PTY LTD –NOT TO BE REPRODUCED IN PART
3 PRODUCT OVERVIEW
3.1 ELM V2 Earth Leakage Relay
The Ampcontrol ELM V2 Earth Leakage Relay is electronic in design and is based on microprocessor
technology. The earth fault current is measured using a toroid, with the trip time and trip threshold being
able to be independently adjusted using selectors on the relay fascia.
When a fault occurs and the trip level and time delay is exceeded the relay’s trip function is activated. A
trip will de-energise the trip contacts connected in the system control circuit. The trip condition is latched
in non-volatile memory and requires operation of the reset input to clear the trip condition. An internal
reset is also provided on the fascia of the relay.
A ten-segment LED bar graph indicates the percentage of leakage level being detected. This reading
can be remotely monitored/displayed using the 4-20 mA output of the relay. When the relay measures
currents with frequencies much greater than 50 Hz, the bar graph LED fast flashes (5 Hz) instead of
being steady. Should the high frequency current persist until the time delay is exceeded the relay will trip
and the ‘Har.Trip’ LED (Harmonic Trip) will be illuminated.
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
unauthorised adjustment of the trip settings by sealing the post (in front of the knurled nut) with a lead
seal or the use of a padlocked cover (see the equipment list for part number), thus inhibiting the
unauthorised removal of the front fascia cover.
An internal switch mode power supply allows the ELM V2 to operate from 24 VAC to 110 VAC or
24 VDC to 150 VDC.
Figure 3.1: Ampcontrol ELM V2 Earth Leakage Relay

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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The ELM V2 Relay is suitable for both core balance and series neutral methods of protection.
Figure 3.2: Core Balance and Series Neutral Installation Types
The ELM V2 Relay has been designed and tested for use on fault-limited systems. To ensure maximum
protection the earth leakage system should be used in conjunction with the other protection systems
covered by AS/NZS 2081. The collective systems are designed to limit touch and step potentials.
The relay is also suitable for industry where equipment or system earth leakage protection is required.
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.
A B C
A B C
To Supply
To Load
N
NER
To Supply Neutral
To NER
Core Balance Installation Series Neutral Installation
EL500S
Toroid EL500S
Toroid

Ampcontrol Pty Ltd –ABN 28 000 915 542
ELM V2 USER MANUAL
MAG-231 Revision 6 –JULY 2023
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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)
A separately purchasable Lockable Cover is available to install over the fascia of the ELM V2 Relay.
This can be used to prevent earth leakage resets being performed by unauthorised personnel.
Figure 3.4: Lockable Cover (Suit ELM / ELD / ELV Relay)