NOJA Power

Press Release

Published 10/2018

NOJA Power Releases Custom CT option for OSM Reclosers

Close up of NOJA Power substation installation Kazakhstan
NOJA Power Installation Kazakhstan

Driven by customer demand, Australian switchgear engineers NOJA Power today announce a custom modification option to include a second set of Current Transformers in their OSM Recloser product. With the OSM Recloser being deployed in more substation environments, the additional CT’s allow for implementation of Differential Protection schemes.

The additional Current Transformers are installed inside the OSM Recloser product, with terminals being made available for connection to third party relay equipment through use of a ruggedized connector. CT leads can be extended from the OSM Recloser to a local terminal block for simplicity.

Performance of the combined integrated solution has been verified through NATA accredited third party laboratory certification, verifying the accuracy and performance of the equipment is maintained with the additional componentry. A certificate of performance is available as evidence of performance of the equipment.

NOJA Power OSM Recloser Substation Mounting Arrangement
NOJA Power OSM Recloser Substation Mounting Arrangement

Substation applications are becoming more common for the OSM Recloser product, primarily due to CAPEX savings of procuring an integrated solution that includes the switchgear and control system in a single package. The further integration of CT’s for differential protection makes the OSM Recloser a fully capable substation circuit breaker, provided interruption requirements are at 16kA or below.

“Our customers are finding new applications for our products due to the extensive protection functionality, reliability and performance of the product,” reports NOJA Power Group Managing Director Neil O’Sullivan. “The reliability in particular gives our customers the confidence to use our recloser products in their primary substations where the fault level permits. The additional set of CT’s allows transformer differential protection to be implemented. Common applications use our OSM38 product on the primary side of the transformer and our OSM15 product on the secondary side of the transformer providing the outgoing feeder protection.”

NOJA Power remains dedicated to its mission of innovative solutions using integrated products combined with unrivalled service worldwide. With the augmentation of the OSM Recloser to integrate additional CT’s, NOJA Power is simplifying substation design.

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