Catalogue OSM Recloser
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NOJA Power Switchgear - 68720, 3330, 16186, 298745
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Product Guide
OSM Automatic Circuit Recloser 15kV & 27kV Models
MEASUREMENT
REMOTE CONTROL
An RS232 front panel interface is provided to connect to a PC running CMS. 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 and Modbus communications protocols are provided in the standard product combined with our ability to engineer new protocols to meet specified customerrequests.
The control cubicle has space to mount a radio or modem. The onboard radio power supply is rated at 12V 15W continuous duty, 30 watts 50% duty cycle.
I/O modules with six (6) user configurable inputs and six (6) user configurable outputs can be included in the RC control. Up to two I/O modules can be fitted extending this to twelve inputs and twelve outputs. Up to eight points can be mapped to each output.
Voltage and Current is measured on all six bushings of the OSM recloser using capacitively coupled voltage sensors and Rogowski coil currentsensors.
Phase to Earth Voltage:
Range 0.3-16.0kV, Accuracy ± 1%or0.1kV
Phase to Phase Voltage:
Range 0.5-27.0kV, Accuracy ± 1%or0.1kV
Phase Current:
Range 0-630A, Accuracy ± 1% or ±4A Residual Current:
Range 0 - 400A, Accuracy ± 5% or 0.5A
Active, Reactive and Total Power:
Range 40 - 630A, 4.5 - 27kV, Accuracy ± 2%
Single and Three Phase Active, Reactive and Total Power:
Range 0 - 30,000 kW/kVAR/kVA, Accuracy ± 2%
Frequency:
Range 45-55Hz, 55-65Hz
Accuracy at dF/dT < 0.2Hz/s: ± 0.025Hz
Range 45-55Hz, 55-65Hz
Accuracy at dF/dT < 0.5Hz/s: ± 0.05Hz
Power Factor:
Range 0-1, Accuracy ±0.02
EVENTLOG
The RC control provides two separate event logs time and date stamped to a 0.01 sec resolution.
The first is viewable from the Industrial lcd display and provides critical operations data for the linesman. It includes close/open operations, fault types, phase and peak level of fault current.
The second is viewable by PC upload using CMS (Control and Industrial management software). It provides a full log of all operational history including setting changes, operations and fault history.
The fault history logs include 50 cycles of pre-trip history to allow analysis of the fault propagation.
LOAD PROFILE LOG
The Load Profile is logged with a user configured integration period of either 5, 10, 15, 30 and 60 minutes.
The following parameters are logged separately for both positive and negative powerflow:
- 3 phase kW, kVA and kVAr
- 1 phase kW, kVA and kVAr for each phase
Up to 3840 events can be stored in the memory which corresponds to a 160 day, 60 minute, integration period.
CMS can be used to upload and plot the data.
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