AR – 12 Series – Auto Reclosers
AR-12 Series recloser is a three-phase vacuum circuit breaker to handle medium voltage feeders in normal conditions of operation and in short circuit conditions. They are specially designed to automatically protect lines and customers, isolate faults, and restore service if the fault has been cleared.
AR-12 Series reclosers are medium voltage circuit breakers capable of opening a medium voltage feeder in short circuit conditions. They are equipped with sensors and intelligent electronic devices specially designed to protect lines and customer, isolating automatically faults and restoring the service if the fault has been cleared.
Reclosers provides real time critical data about the line health, as power (A, W, VAR), voltage (V) or frequency (f) values. This data enhances medium voltage grid operation, enable fault analysis, system diagnosis and eventually improve MV grids operational efficiency.
The use of recloser, in combination with load break switches and other switching equipment, enhances operational capabilities that improves significantly quality of service reliability indicators (SAIDI / CAIFI). Reclosers also reduce costs in terms of maintenance and incident response.
SE6 Series - Sectionalizers
SF6 load break switches are used in power distribution grids along with reclosers to segment long lines and to increase control capabilities.They offer a reliable operation, user safety, low maintenance and a long life, combined in a cheap device that offers advanced capabilities in terms of protection, control and automation.
Our SE6 Series Sectionalizers / Gas Insulated Pole Mounted LBS are capable to open the feeder under normal operating conditions. When a fault occurs and the main circuit breaker or nearest recloser trips off, the load break swith is able to open the line, isolating the faulted segment and allowing a quick service restoration in segments unaffected by the incidence.
Their application on medium voltage overhead feeders significantly improves the quality of service reliability indicators, minimizing the number of users affected when permanent faults occurs and enhancing system reconfiguration options.
SE6 Series load break switches can be supplied with different command and control options: Manual only, with electric drive for future automation or with a control cabinet for automation and local/remote operation.
Types of Faults in Lines
60% - 70% of faults are of a transient (Temporary) nature
Conductors clashing in the wind
Tree branches falling on overhead conductors
Animals or birds getting curious
Careless motor vehicle drivers
Lightning strikes
Operating error : leaving earths connected etc.
Some are more permanent
An “auto-reclose” cycle should clear the fault
“lock out” of the section
Recloser ?
A Recloser is a protection device
For overhead power lines
It is a circuit breaker with more arduous test & install conditions
Designed to RECLOSE on to a fault.
Terminology
The “auto-reclose” cycle
Will detect a fault and open for a pre-programmed time,
before closing again automatically
This cycle can be repeated 3 times
Lockout typically on the fourth trip
Satisfied Customer
Improved reliability of power supply
Quality of supply
Automatic recloser function - supply restoration after temporary faults
Reduced outage time
Minimise revenue loss
Event Log and Remote control
Reduce cost of fault finding
Better knowledge of the network
Reduction in the number of customer complaints
SAIDI/SAIFI variations – Quality Power
SAIDI (System Average Interruption Duration Index) can vary from a few minutes to several hours,
SAIFI (System Average Interruption Frequency Index) can vary from 1 to 10 and more, depending on
population density (rural or urban area)
proportion between underground and overhead distribution
maximum accepted costs for non distributed energy
Permanent interruptions (>1mn)
33/11 KV Unmanned Remote Controlled S/s
Compact, Unmanned, Remote controlled 33/11 KV S/s with 2 transformers each up to 10 MVA
Half space than a conventional s/s.
Economic as very less civil work.
Saving in execution time and costly land in urban areas app.
Remote regular maintenance
CB, Current & Voltage sensors are life sealed ,insensitive to the environment.
All types of protection OC,EF,UV,OV,OF,UF,DF, measurement KW,KWH,KVArH, data logging and event recording & self diagnostic facility helps to analyze the system and energy consumption.
Delivers quality power.
Automatic callout to the remote control station in case of predefined critical alarms.
Communication with the remote central control station using GPRS Network or other media like GSM, 3G, PSTN, Leased Lines, Radio, VSAT etc. using established and field proven IEC 60870-5-104. Scalable to SCADA.
Sub-station will have a unique aesthetic view in a crowded city.
Intelligent Grid
“It’s a visualization of infrastructure to measure, control & manage the energy, using various communication media, from generation to consumer and make it available, transparently to everyone”
Smart Sub stations
Smart Distribution
Features – AR 12 Series With AUTON Controller
Application – AR 12 Series With AUTON Controller
Sectionalizing schemes
Distributed automatic transfer
Distribution automation
Circuit breaker alternative
Relay protection
Revenue grade metering
Open bus ties
To reduce the SAIDI and SAIFI indicators
Unmanned Substation
Features - Sectionalizers With SECTON Controller
Application – SE6 Sectionalizers With SECTON Controller
Lower cost option for segmentation of the network
Reduced operating costs
Reduced outage time
Event log and remote control
Reduction in the number of customer complaints
Long service life
Intelligent Controller – SECTON & AUTON
Fully integrated automation
Power supply with UPS
Measuremen: Current, voltage, harmonic and wave form capture
Control: Sectionalizer Remote control
Communication facilities: Protocols Transmission Configuration with user friendly software
Dominance of SECTON & AUTON
Comprehensive solution: Recloser / Sectionalizer, Network automation, Network maintenance, High integration level, Wide range of protocols, IEC 870-5-101/104 – DNP3-DNP3/IP.
Wide range of transmission media: Radio, GSM, GPRS, PSTN
Measurement features: Voltage, current, power factor, Power calculation, Harmonics analysis, Fault detection, Protection functionality.
Interfacer – IFR SWS
Features:
Local and remote control
Communication options
Measurement screens
Local language support
Event log handling
Controller firmware loading
Power quality analysis
Firmware code loader
Launch pad