Shrihans Electricals Pvt. Ltd. Mulund West, Mumbai, Maharashtra

Usually SVC reactors were imported from Austria for all these years. Now we have manufactured the largest SVC reactor in the country for 60 MVAR SVC system of ABB make. It has been successfully installed and commissioned at a SAIL steel plant since 2 years.

Smoothing reactor series Reactors are connected in series with transmission distribution line or feeder to limit the fault current. Series reactors are also used for load balancing, limiting inrush current in capacitor banks, filtration of harmonics along with capacitors. Other applications include arc furnace installations, load flow control, smoothing of wave form in DC systems. Neutral grounding is also one of the applications of series reactor.

  Shunt reactors are normally used to compensate capacitive VARs generated by high voltage transmissions lines during light loaded conditions to avoid overvoltage at the other end. Other applications of shunt reactors include the use with capacitors to balance the three phase currents when used for single phase load.

Shunt reactors are normally used to compensate capacitive VARs generated by high voltage transmissions lines during light loaded conditions to avoid overvoltage at the other end. Other applications of shunt reactors include the use with capacitors to balance the three phase currents when used for single phase load.

  Series Reactors are connected in series with transmission / distribution line or feeder to limit the fault current. Series reactors are also used for load balancing, limiting inrush current in capacitor banks, filtration of harmonics along with capacitors. Other applications include arc furnace installations, load flow control, smoothing of wave form in DC systems. Neutral grounding is also one of the applications of series reactor.

Neutral Grounding Reactors (NGRs) are used to control single line to ground faults only. NGR are particularly used at transmission voltage levels, when autotransformers with a delta tertiary are employed. Neutral Grounding Reactors (NGRs), normally installed between the transformer or generator neutral and ground, are effective in controlling single line to ground faults since, in general, the system short circuit impedance is largely reactive. NGRs reduce short circuit stresses on station transformers the most prevalent type of fault in an electrical system. We have supplied 145KV neutral grounding reactors for 6 X 660MW at Lalitpur Thermal Power Projects through BIDCO & L&T for 220 KV, 765 KV switchyard installation. We have recently installed 145 KV Dry Type neutral grounding reactors at a power grid substation

Filter reactors are used along with capacitor banks to form the tuned harmonic filter circuit for a particular harmonic. If different harmonic currents are to be eliminated from the system, number of filter circuits tuned to each harmonic frequency need be installed. Installing filter circuits is necessary where the harmonic exceed the permissible level, otherwise the excessive harmonic currents can cause higher losses resulting in higher temperature and dielectric stresses. We are able to offer Harmonic Filter reactors in oil cooled as well as air cooled version depending upon the customer's requirement.

Filter reactors are used along with capacitor banks to form the tuned harmonic filter circuit for a particular harmonic. If different harmonic currents are to be eliminated from the system, number of filter circuits tuned to each harmonic frequency need be installed. Installing filter circuits is necessary where the harmonic exceed the permissible level, otherwise the excessive harmonic currents can cause higher losses resulting in higher temperature and dielectric stresses. We are able to offer Harmonic Filter reactors in oil cooled as well as air cooled version depending upon the customer's requirement.

For efficient working of arc furnace, the electrode current should be low and the arc should be longer. To stabilize the arc, the series reactor is installed on primary side of the arc furnace transformer. These are normally in iron cored construction with forced oil and water cooling.We have installations in major steel plant including SAIL.

Fault current limiting reactors connected in series to the transmission / distribution line or to the feeder to reduce the short circuit current within the level permissible for complete electrical system. Fault current limiting reactors are also used between two different bus systems to limit the fault current and as load sharing reactors in parallel systems. Besides, Fault current limiting reactors are extensively used in series with capacitor banks to limit the inrush current. We are able to offer Fault current limiting reactors in oil cooled as well as air cooled version depending upon the specific requirement of customer.

Current limiting reactors connected in series to the transmission distribution line or to the feeder to reduce the short circuit current within the level permissible for complete electrical system. Fault current limiting reactors are also used between two different bus systems to limit the fault current and as load sharing reactors in parallel systems.

  The Capacitor In-rush Limiting reactors are used in series with capacitor bank to control the in-rush current and to suppress the harmonics. Normally reactors with 0.2% rating are used for in-rush current limiting on neutral side and 6% for line side. Specific ratings between 0.8% to 13% are used for harmonic suppression.

Air cored reactors are manufactured by building the winding on a former with suitable insulations and spacers to hold the winding in strength and to restrain the turns from any movement caused by compressive forces. Reactors are made of Aluminium Copper winding without any core. The reactors can be assembled in vertical as well as horizontal construction.