Page 1
Protection Relay Designed and Manufactured in Australia by No copies of the information or drawings Ampcontrol Pty Limited ACN 000 915 542 within this manual shall be made without Phone: (02) 4956 5899 Fax: (02) 4956 5985 the prior consent of Ampcontrol.
Page 2
Before You Begin We would like to take a moment to thank you for purchasing the ELM Earth Leakage Relay. To become completely familiar with this equipment and to ensure correct operation, we recommend that you take the time to read this user manual thoroughly.
Part 3: Earth Leakage protection devices. single phase to earth fault current. The Part 4: Lockout Earth fault devices (test protective device, such as an Ampcontrol ELM before energisation) earth leakage relay, would then isolate the Part 5: Earth Fault Limitation (impedance...
ELM USER MANUAL ISSUE 4 The automatic protection of circuits is not 2.1 Earth Leakage Systems intended to take the place of sound installation Desirable though it may be, it is impractical to practice and the regular maintenance and provide...
(200mm) or toroids with square apertures. 2. Only use approved toroids specified by Ampcontrol as these have been designed to minimise the problem. 2.7 Toroid Installation Guidelines 1. Keep cables as close to the centre of the toroid as possible. Do not tie them to one side of the toroid.
1 second after the reset trip occurs. button is released. The ELM Earth Leakage Relay is housed in a 3. 4 Toroids stainless steel case and can be either ‘DIN The ELM Relay is designed for use with Rail’...
ELM USER MANUAL ISSUE 4 device. To select this mode link the ‘NFS’ input terminals ('NFS' LED is 'On' when this mode is selected). 5. Equipment List 121398 ELM Earth Leakage Relay Note1: To restore power following a trip 101399 ELD DIN Rail Mounting Kit...
ELM USER MANUAL ISSUE 4 Typical Connection Diagram Remote Monitoring Incoming Alternative Toroid Output Supply Position NC-2 4-20mA + 10-30Vdc Com-2 4-20mA - PLC Analog Input or Remote Indication Meter Relay Contacts NO-2 Shown in the De-energised State Com-1 Ext Reset...
Need help?
Do you have a question about the ELM and is the answer not in the manual?
Questions and answers