The Ampcontrol ELM V2 earth leakage relay has been designed and approved for use on earth fault limited systems providing earth leakage protection (earth fault protection). The relay is also suitable for other applications where equipment or system earth leakage protection is required.
The Ampcontrol ELD V3 earth leakage relay has been designed and approved for use on earth fault limited systems, namely coal mining applications, providing earth leakage protection (earth fault protection) as per AS/NZS 2081:2011. The relay is also suitable for other applications where equipment or system earth leakage protection is required.
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.
Some of the relays components are experiencing obsolescence issues, and have been updated to ensure continued production. New item numbers for the current discrete Earth Leakage Relays have been allocated to facilitate these changes. The functionality, form and fitment of these relays remains unchanged
The OTS System is installed into Ampcontrol Substations, Distribution Boards and Outlet Control Boxes. The OTS greatly simplifies the statutory testing process, performing a hands-free, automated testing function whilst simultaneously providing a comprehensive record management tool.
User Manual forAmpcontrol’s ELV-PRO, a high performance, microprocessor based, wide bandwidth earth leakage protection relay that is capable of measuring and analysing power and switching frequency currents flowing in IT power systems. The ELV-PRO uses patented technology (US20130258537) to characterise earth leakage currents giving superior fault discrimination.
A number of Ampcontrol electrical protection relays which have already been made obsolete, and not manufactured for some time, will no longer be repaired (WN-2016-04). This is because a number of critical components required for repair are no longer available. The effected products are outlined in the notice along with the replacement series (if applicable).
In an industry where safety is paramount, Ampcontrol has a proven track record of delivering products to suit the unique system challenges and hazards of hard rock mining applications. Our comprehensive and cost effective range of electrical protection relays ensure safe and stable electrical systems.
For nearly 50 years Ampcontrol has designed, manufactured and delivered integrated electrical solutions that improve safety, maintain efficient coal mining operations and meet stringent regulatory requirements. From our humble beginnings to being recognised as an industry leader in electrical solutions, we have consistently ensured our products meet the expectations of our customers in terms of safety, performance, quality, technical excellence, reliability, efficiency and cost effectiveness.
Updated Installation and overhaul requirements of Ampcontrol integration protection and earth leakage relays. The following information has been added to the IP relay user manuals maintenance section. This has been included due to equipment being returned to AS3800 RSF’s and the IS components not being overhauled and then returned to service, only for the user to experience nuisance tripping, reliability issues and or failure shortly thereafter.