The OSM15 and OSM27 automatic circuit reclosers are designed for use on overhead distribution lines as well as distribution substation applications for voltage classes up to 15kV and up to 27kV respectively.

The 200 series tanks are manufactured from 304 grade stainless steel and powder coated a light grey colour.

The product is supplied complete with an RC01 control and communications cubicle. The RC01 control cubicle is a microprocessor based controller that provides all the protection, data logging and communications functions in a single device. The OSM has been designed for use as a stand alone device that is easily integrated into distribution automation and remote control schemes using the in-built communications capability.

The product has been extensively type tested by independent laboratories to ensure long life and reliability under the harshest environmental conditions. The OSM automatic circuit recloser is the only solid di-electric insulated recloser to provide controlled arc fault venting and independent testing provides verification of this important safety feature.

The product uses technology developed and refined over the last decade.

Electronic Controls

The RC01 control and communications cubicle is a microprocessor based controller that provides a directional overcurrent, earth fault and sensitive earth fault relay, auto reclosing relay, instantaneous metering, event log, demand logger and remote terminal unit (RTU) for remote control in a single package.

The operator control panel is provided with a four line backlit LCD display and keypad to provide local control functions.

Remote Control

An RS232 front panel interface is provided to connect to a PC running Telus. This provides full settings and data management facilities. An RS485/RS232 RTU interface offering 300-19.2k baud, full and half duplex modes, is provided to connect to remote control systems. DNP3, IEC 60870 and Modbus communications protocols are provided in the standard product combined with our ability to engineer new protocols to meet specified customer requests.

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Protection

• 4 Independent Protection Groups
• Directional over current and earth fault protection
• Inverse Time Protection
• Definite Time Protection
• High set Instantaneous element
• Directional Sensitive Earth Fault Protection
• Under Voltage Protection Element
• Under Frequency Protection Element
• Zone Sequence Co-ordination
• Voltage reclose control with automatic back feed restoration provides loop automation functionality.
• Live Line Function

Specification