Service Bulletin – IP and EL Relays

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.

Whitepaper – IPM Relay Compliance With AS/NZS2081

In order to utilise non-AS/NZS2081 compliant protection devices on an earth fault limited system, the user must ensure the key objectives of the resulting protection system are equivalent or
better than that achieved using an AS/NZS2081 compliant device.

User Manual – HPB Relay

The Ampcontrol HPB Integrated Protection Relay is an intelligent protection relay based on microprocessor technology. The Relay has been specifically designed to operate with very high interference to the pilot conductor that occurs on cables in open cut mining operations. The integrated relay provides the necessary functions required for protecting electrical outlets supplying draglines, shovels, drills etc.

Technical Data Sheet – HPB Relay

The Ampcontrol HPB Integrated Protection Relay (6.6 kV, 11kV or 22 kV) is an intelligent protection relay based on microprocessor technology. The Relay has been specifically designed to operate with very high interference to the pilot conductor that occurs on cables in open cut mining operations. This is more prevalent on a non-symmetric position of the pilot and earth conductors.