User Manual – ECD Relay

The ECD is an intrinsically safe electrical protection relay designed for operation in underground coal mining applications. It provides earth continuity protection in accordance with AS/NZS 2081:2011 ensuring the integrity of the earth connection through a trailing or reeling cable is maintained. Earth Continuity protection is another layer of protection that, along with earth leakage protection, can help keep step and touch voltage potentials at a safe level by ensuring the earth resistance is below a determined safe level.

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Technical Data Sheet – ECD Relay

The ECD is an electrical protection relay designed for operation in underground coal mining applications. It provides earth continuity protection functions that ensure the electrical distribution system in the mine operates safely. It continually monitors the earth continuity of a mining trailing or reeling cable.

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IECEx Certificate of Conformity Annex – ECD Relay

IECEx Certificate of Conformity Annex for Ampcontrol’s ECD Relay. Certificate number IECEx TSA 13.0004X, issue number 0.

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IECEx Certificate of Conformity – ECD Relay

IECEx Certificate of Conformity for Ampcontrol’s ECD Relay. Certificate number IECEx TSA 13.0004X, Date of issue 21/6/2013.

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Application Note – Earth Continuity Pilot Voltages

The function of the earth continuity system is to enable SAFE and RELIABLE operation of reticulated mining equipment by ensuring the presence of an adequate earth connection. Earth continuity is typically required in applications where there is a fundamental reliance on the earth return impedance for the electrical safety of the operating equipment.

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