Product Launch: New OSM Recloser

International Electrical Engineering firm NOJA Power has taken first orders for their newly released 15 kV 310 series Recloser.

Built on the proven OSM310 Recloser architecture, this new OSM310 design offers cost savings in exchange for lower nameplate ratings, making the product an ideal alternative for rural networks where equipment specifications often vastly exceed practical application.

The new OSM Recloser model joins its peers in the OSM310 range under the part code of OSM15-12-630-310, indicating its ratings of 15 kV, 12.5 kA interrupt and 630 A operating current respectively.

While the new OSM310 offers the lowest performance specifications in NOJA Power’s product range, no expense has been spared in comprehensive type testing of the product.

The new OSM310 15kV Recloser underwent rigorous type testing at KEMA in the Netherlands, achieving certification in accordance with the IEEE C37.60 2019 standard.

A NOJA Power 310 Series OSM15 Recloser ©2022 NOJA Power

These results provide a comprehensive set of type tests for the new OSM310 product, offering engineering assurance and clear risk mitigation for engineering teams deploying the OSM15-12-630-310 Recloser.

A specification comparison table of the OSM310 Series reclosers is available below.

Technical Specification Sheet

OSM Type⁽¹⁾	NEW OSM15-12-630	OSM-15-16-800	OSM-27-12-800	OSM-38-12-800	OSM-38-16-800
Manufacturing Model	310/312	310/312	310/312	300/302	300/302
Rated maximum voltage	15.5 kV	15.5 kV	27 kV	38 kV	38 kV
Rated continuous current	630 A	800 A	800 A	800 A	800 A
Fault make capacity RMS	12.5 kA	16 kA	12.5 kA	12.5 kA	16 kA
Fault make capacity Peak (50Hz)	31.5 kA	40 kA	31.5 kA	31.5 kA	40 kA
Fault make capacity Peak (60Hz)	32.5 kA	42 kA	32.5 kA	32.5 kA	42 kA
Fault break capacity	12.5 kA	16 kA	12.5 kA	12.5 kA	16 kA
Asymmetrical Breaking Current	13 kA	17 kA	13 kA	13 kA	17 kA
DC component Interruption capacity	20%	20%	20%	20%	20%
Mechanical operations	10000	30000	30000	30000	30000
Full Load Operations	10000	30000	30000	30000	30000
Fault break capacity operations	70	70	140	100	140
Short time current withstand 3 seconds	12.5 kA	16 kA	16 kA	12.5 kA	16 kA
Mainly active breaking capacity	630 A	800 A	800 A	800 A	800 A
Cable charging current	10 A	25 A	25 A	40 A	40 A
Line charging current	2 A	5 A	5 A	5 A	5 A
Impulse withstand across the interrupter	110 kV	110 kV	150 kV	170 kV	170 kV
Impulse withstand phase to earth and phase to phase	110 kV	110 kV	150 kV	195 kV	200 kV
Power frequency withstand phase to earth (dry) and across the interrupter	50 kV	50 kV	60 kV	70 kV	70 kV
Arc Fault Current Duration	12.5 kA/1s	16 kA/0.2 s⁽²⁾	16 kA/0.2 s⁽²⁾	12.5 kA/1 s	12.5 kA/1 s
Closing Time	<60 ms	<60 ms	<60 ms	<70 ms	<70 ms
Opening Time	<30 ms	<30 ms	<30 ms	<30 ms	<30 ms
Interrupting Time	<50 ms	<50 ms	<50 ms	<50 ms	<50 ms
Arcing Time	<20 ms	<20 ms	<20 ms	<20 ms	<20 ms

Recloser Control Compatibility

The new OSM15-12-630-310 Recloser launches with full compatibility with the current generation of NOJA Power RC Series Controls, including the RC-03 value offering, the RC-10/15 system or the advanced RC-20 Recloser Control system.

“As our customers around the world continue to invest in increasing reliability with higher levels of automation on their distribution networks, many overhead lines, particularly in rural applications, require lower current rated products so we have responded to this market requirement with our new OSM15 630 ampere product,” says NOJA Power Group Managing Director Neil O’Sullivan.

“Combined with our RC-03 control, the two offer a more economical solution for lower current rated applications.”

Technical Specification Sheet

Recloser Control Compatibility

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