Technical Datasheet – ELM V2 Relay

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.

Technical Datasheet – ELD V3 Relay

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.

User Manual – ELM V2 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.

Product Update – EL 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

Technical Datasheet – SLE Conveyor Control Relay

The SLE Signal Line Relay is designed to control conveyors in industrial and mining applications. The SLE Signal Line Relay is normally installed in the conveyor starter panel. The signal line is connected between the + and – Terminals of the Relay. The – Terminal is internally connected to the Earth Terminal. It is important that control switches are only connected to the + Signal Line.

Technical Datasheet – Outlet Test System (OTS)

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 – ELV-Pro Analyser

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.

Technical Datasheet – ELV-Pro Analyser

Ampcontrol’s ELV-PRO is 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.

Whitepaper – Wideband and weighted frequency modes in VSDguard and ELV

The 2011 revision of AS/NZS2081 correctly recognises that system protection must be assessed in keeping with touch potential curves in AS/NZS4871:2012, but acknowledges that this curve is for 50Hz (power frequency) only. AS/NZS2081 explicitly draws attention to the fact that 50Hz curve sets are not immediately applicable in systems that contain equipment capable of generating non-50Hz components.

Whitepaper – Touch Potentials

Traditional practice is not necessarily safe. Traditional earth fault limits, earth loop impedances and protection clearance time ‘rules of thumb’ do not always result in a safe or compliant system.