Protection Engineers - New Zealand.

Our client in New Zeland seeks to employ Protection Design Engineers with at least 5 years' experience in as many as possible of the following activities:

• Physical parameters/characteristics of the components of the network – lines, transformers, buses, capacitors, reactors, feeders, generators, synchronous condensers, switchgear, cables, conductors, etc
• Earthing & phasing arrangements
• Behaviour of voltage transformers (VT), current transformers (CT), neutral current transformers (NCT), Earthing transformers (ET), Neutral earthing resistors (NER)
• Network modelling for all types of faults including fundamental understanding of sequence components, ohmic impedances, mutual impedances, per unit impedances.
• System fault modelling; including asymmetrical fault behaviour
• Application of different relay manufacturers’ relays, and their functionality, to detect system faults and system abnormalities
• Protection principles and application of sensitivity, stability, selectivity, suitability
• Calculation/selection of relay settings, control logic, & protection signalling requirements
• Data protocols operating between protection relays, control systems, and primary equipment such as AVRs (auto voltage regulators) controlling transformer tap changers; particularly IEC61850
• Secondary circuit design including IEC international best practice
• DC & AC auxiliary systems, with ratings sufficient to support the protection and primary equipment